3L80, TH400, Turbo 400, Super Turbine 400) The THM400 was first introduced during the 1964 model year in Buick’s and Cadillac’s, and the following year it was introduced throughout many of the GM family’s automotive and truck line. The same is true of the transmission final gear ratio. Rear Brake Kits. to help the crew wire up their truck. In addition to supplying increased torque for towing and motor homes, these gears are an excellent alternative to steep rear end gears for street driven performance vehicles and low RPM, high torque race engines. I've gotten my car up to 135 with little trouble. Reading Time: 20 minutes The modern automatic transmission is by far, the most complicated mechanical component in today’s automobile. You have the extra torque of a good, mild 383, so you shouldn't have to wind the rpms up too far. JW Performance TH400 Transmission JW Performance TH400/VG Hybrid Torque Converter Parts needed to complete the conversion but currently are not supplied by BDE are: flexplate, driveshaft, trans cooler, trans mount, torque converter pilot bushing, and shifter; PN and supplier recommendations are available upon request. Chevrolet Infotainment System functionality varies by model. 55 rear and I could tear up the streets but my top speed was crap. Solenoid Knob has 6 Settings to adjust the amount of fluid the Solenoid will dump when activated. 48:1, and Third gear is 1:1. The vehicle performs very well on the highway with a smooth and very quiet ride due to the quiettune technology. At some point, even the best transmissions need to be rebuilt. Rpms rev higher until switches gears and seems to coincide with a "winding" noise, happens even when idle but is worse on acceleration. 89 cubic inches. 37" tires at 1,500 rpm. For instance, if you have chest pain that […]. By only switching to the 4L85E, you would be running about 2,900 rpm because of the. The gear ratio makes a whopping. 2020 Continental Tire the Americas, LLC P. We ran a TH 400 trans in a boat before worked great at the docks and pulling skiers. Rpms rev higher until switches gears and seems to coincide with a "winding" noise, happens even when idle but is worse on acceleration. Why Is a Transmission Necessary? • Provide torque multiplication at low speeds • Reduce engine RPM at highway speeds • Allow the engine to operate within its most efficient RPM range • Allows the engine to be disengaged from the rear wheels while the vehicle is not moving (torque converter & clutch). Transmis­sions were sourced from Muncie, Saginaw, GM’s Hydra-Matic Division, and even Dearborn (Ford). when towing my fifth wheel in overdrive the torque converter will unlock as I approach a grade. Muncie Wide 4sp pre-'74. I have a th400 with a 3. 356 Gauges "356" 120MPH 100mm Speedometer. THE TRUCK: 2001 Dodge Ram 3500 4X4 24v Diesel Cummins, previously an 8. 7 gets about 16. It does seem that the TH400 does make the car quicker in the 1/4 and that is probably due to better gearing. 1963-1973 3 speed models with Chevy engine. Installation of a 4L60-4L75, 4L80/4L85, TH400 or 2004R automatic transmission can also be accomplished using this crossmember and the Hooker 12650HKR , 12655HKR or 12656HKR adapter kits referenced later in this document. This model has a conservative rate of 450 ft. B&M Tork Master 2400 2300-2500 RPM Hi Stall Torque Converter Suitable for VT 304 5lt V8 Holden Commodore 4 Speed Auto 4L60E B&M offers a wide range of performance torque converters to fit almost everybody’s needs. 45-65 MPH is right in the engines sweet spot. Bad Torque Converter Clutches - Modern torque converters will lock to create a true physical connection between the automatic transmission and the engine. To determine the distance the vehicle will travel for one revolution of the engine by dividing the circumference of the tire by the combined gear ratio of the transmission and differential. 50 a gal gas you could save $1000 going from 10 MPG to 17 MPG in about 10,000 miles. 08 gearing drives nicely down the highway (or as nicely as a 6. times and get it all back with the. Be prepared to have screamin' RPM's if you get on the highway if you go with either of the two! Patrick '56 F100; Must. and back with only stops for gas and food. Did anyone catch the "4. 6L Duramax LML- 400 HP @ 3,000 rpm Torque: 765 lb-ft @ 1,600 rpm The Suburbans 0-100 speed is able to hit 100mph in apx. TCI 251801 PRO-X TH400 4000 Stall Converter. We ran a TH 400 trans in a boat before worked great at the docks and pulling skiers. I have a 2. 08 gears and posi already. Adam Wartell Lifetime Member C3VR Founder Send Private Message Eagleville, PA - USA Vette(s): Used to own a 1979 Corvette now owned by JB79 Joined: 11/1/2001 Posts: 15403. 9sec with a Increase of top speed by 30% Fuel Economy: Without armament fuel economy is increased to approximately 20mpg combined city and highway driving and approximately 23mpg highway. I need an auto transmission for my 1969 sprint engine for a firebird, I have a turbo 400 on hand but the torque converter bolt circle doesn't match the original flexplate from the enigine, I don't know what flexplate I could get or maybe even source a 200r4 if the flywheel swap is to much energy. Refundable core charge for acceptable transmission core is $175. 48:1 first gear. Video of me comparing what you would see for RPM and MPH with OD vs non Od automatic transmissions , car has 3:73 gears and 28" tall tires also has a. These calculators are designed to give the approximate engine RPM (revolutions per minute) based on data entered. 73 gears and regear the transmission, the 42's will lower your highway rpm by about 370 RPM @ 65MPH. I didn't think 4. A real good balance of go versus highway rpm is a 3. 00, If a SuperCase is used: $100. My Ram 1500 with 4. than a TH350 but this heavy duty factor was designed more for heavy vehicles that may encounter pulling heavy loads. Its planetary gearset offered 2. Show Full Signature. Bad Torque Converter Clutches - Modern torque converters will lock to create a true physical connection between the automatic transmission and the engine. Granted I have more power than most but I have ran 5. ) Tire diameter in inches (24. View as Grid List. A 4x4 Differential Gear Ratio Chart Table. Although, both transmissions have the final gear of 1:1 so whatever transmission you pick, you will run the same RPM on the highway. The TH400 is conservatively rated at 450 ft. The same is true of the transmission final gear ratio. @tobroketoretire The tires are 245/60R15-100S front and back. 73's tend to be a bit too buzzy on the highway for my taste (especially with my taste in exhausts), and anything lower will make you a little sluggish off the line. Calculating for the after ratio of 4. The Turbo 350 has been used in many GM cars and some Chevy Blazers. This calculator will provide the speed of the vehicle based on the transmission gear ratio, the engine RPM, the tire height, and the ring gear and pinion gear ratio in the rear end axle differential housing. 70 in the LT-1, its a MONSTER off the line, but runs about 3000rpm at about 60MPH. We took interest in Gear Vendorss when trying to figure out how tolower RPM in overdrive at highway speed. RPM's at 65 go up to 2383 in exchange for a 7. (I'm now running 5500. My old Honda CRX Si was geared to run at 3000 RPM at 100 km/hr (62 mph). 0L V-10 gasoline, 5 speed NV4500, NP241HD and 4:10 Dana 80. 5" bolt pattern, 4200-4500 RPM stall Part# 97-1D42F. 42 is better for MPG if you do highway driving, while 4. The under/overdrive unit is a very nice touch and allows for a higher top speed and lower RPMs on the highway with the conventional TH400 transmission built to handle the raw power of this big block. this will drop your 60 MPH RPM down to about 1500 RPM. com and eBay. 08, as long as you have the horspower to back it up. I'm building a '79 4x4 dually with a turbo 400 transmission and I'm putting a '89 454 in it, the truck is just gonna be used for towing a couple vehicles at a time, I'm wanting to get all the horsepower and torque out of this engine that is possible and still drive on the road with no problem, I plan on stroking it but I just don't no what size to go with so my questions are. If it was in second gear, even with a 3. My quest is similar to that of many others on your forum – highway speed. 070 overdrive , that can be compensated for by taking a little gear out of the rear end EXAMPLE if you have 3. 75:1 4th gear. This means more slippage in the converter which translates to excess heat in the trans as well as lost fuel effeciency. Re: How much hp do you think this turbo 400 will handle #12 Post by hsutton » Sun Aug 03, 2008 3:38 am I think i'd start a moderate burnout at way less than full throttle in second and then go to high to get the wheel speed up and definately lift before the tires grab real hard. At 400HP, and as much torque across a broad RPM range, it had the impressive ability to plant the driver deeply into the seat. We’ll assume this Chevelle is running a TH400 with a mild performance non-lockup torque converter. This converter can be ordered with stall speeds of 2000, 2300, 2600 or 2800 RPM. Toll Gates,Jewellery shops, Electric and water departments, Hotels and Restaurants, shops. lbs of input torque, though that can be easily upgraded with aftermarket. Common ratios in Jeeps include: 3. Is the difference in highway mileage between the manual and automatic (2 mpg) attributable to the different rear axle ratios? (3. The pan is secured with 13 bolts. Since there is. My '75 vintage TH400 transmission is behind a fresh Cad 500 in my 4x4 which use for a trail rig (1st gear crawling) and some towing. The TH400 automatic transmission is designed for Corvette big-blocks with engines rated up to 400 hp. #N#Click the button for unit you want to solve for. 08, as long as you have the horspower to back it up. Learn more about the 2017 Porsche Macan. Discussion. *** Calculated using a 1:1 final drive ratio (No Overdrive). Bad Torque Converter Clutches - Modern torque converters will lock to create a true physical connection between the automatic transmission and the engine. As for compression ratio, I would not push it beyond 8. the armored car was loosely related to the Spähpanzer Luchs and is a part of the TH-200 family. x diff ratio (4. 48 and third is 1. Muncie Wide 4sp pre-'74. 90 rears and the engine is a 515 Detroit, 18 speed. 70 in the LT-1, its a MONSTER off the line, but runs about 3000rpm at about 60MPH. Refundable core charge for acceptable transmission core is $175. By only switching to the 4L85E, you would be running about 2,900 rpm because of the. Dont run the 4. (I bet his transmission got a lot hotter too, but it held up. It sits on roughly 3500ish but i can go for a drive later and confirm thiseasy way to see what it will sit on in top gear is go on the highway and stay in 4th gear, you dont have a stall so wont be dead on it but it will give a rough indication. The default values yield a highway cruise speed of about 65 MPH. Converters can range from 11 and 12 inches in diameter all the way down to 7 inches. Calculating for the after ratio of 4. Chief RPM is shown with two different physical appearances in Cars; he is colored yellow the first time he is seen in the film, whereas he is colored white throughout the. Proper RPM at highway speed (18/19) 5/5/06 11:04pm. Find many great new & used options and get the best deals for Big End Performance 32002 GM TH350/TH400 Street Torque Converter, 1900-2400 RPM at the best online prices at eBay! Free shipping for many products!. Automatic. Re: How much hp do you think this turbo 400 will handle #12 Post by hsutton » Sun Aug 03, 2008 3:38 am I think i'd start a moderate burnout at way less than full throttle in second and then go to high to get the wheel speed up and definately lift before the tires grab real hard. You need the RPM for the cam but running along a 2800 rpm on the highway gets old fast. The basic purpose of installing a modified torque converter is to allow the engine (RPM) to increase to where the engine is making greater power before driving the wheels, thus allowing the vehicle to accelerate from a standing start much HOW TO SELECT THE RIGHT HIGH STALL CONVERTER Manufactured In-House by TCS Products Toll Free: 1-800-960. Can someone help me? automatic-transmission gmc yukon. RPM 1993-02 Camaro/F-Body 4L60E/4L65E Level VII Transmission. ) Tire diameter in inches (24. View as Grid List. ATI has T400 street rod and drag race transmssions for vehicles making 600 horsepower to 3,000 horsepower!. That should put me at about 2311 rpms at 75mph and 2619 rpms at 85mph. At running temp IAC reads 5% in neutral. We offer a plethora of Th400 Transmission for your vehicle needs. 12° BTC @ 900 RPM - Manual Transmission 12° BTC @ 700 RPM - Automatic Transmission Spark Plug AC Spark Plug ACR45TS Spark Plug Torque 25 lb. After blowing up dozens of 200's, i love the confidence it gives me. I am currently running a 3500 stall with a GV and I would really love to. The same is true of the transmission final gear ratio. I've been running a TH400 behind a 305, RV cam, 600 Edlebrock, MSN ignition and a 9" Fjord rearend (3:35 gears) in my 51 Chev 1/2 ton. In addition to the resulting fuel mileage increases, the High Torque Towing Converter also lowers transmission temperature by as much as 20°F. So I swapped out the 3. 2 months go by and no money so repo the truck back not to find out later he was pulling a 3 axle stamp 3/4 inch steel trailor with inline 6 cummins out of a big rig. 08 rear end out of a police caprice or 94-96 impala is a good fit because its has 3. Muscle Car Image Gallery. Since there is. Engine RPM, or the speed at which the engine turns, can be calculated at any speed given the vehicle's tire size, axle ratio, and final transmission gear ratio. The 2004R gear ratios are 2. Of course, buying a performance built 4L80E is significantly more expensive than a gear change, but it allows you the opportunity to have both the deep gear for drag-strip passes while still using overdrive to reduce engine speed on the. my Nova ran 3. These transmissions have higher mechanical first-gear ratios (turbo 400 2. The th-400 also needs a full aftermarket crossmember plus torque arm mount. Save money when you buy your transmission and converter together!. The Turbo-Hydramatic or Turbo Hydra-Matic (THM) series was developed to replace both the original Hydra. What does RPM stand for in Construction? Top RPM acronym definition related to defence: Revolutions Per Minute. Add to Wishlist. The TH400 is conservatively rated at 450 ft. This stall converter is balanced, has furnace brazed fins, bearing construction and a wider carbon fiber clutch. The same tire and RPM will give the following speeds based on the following gear ratio changes. While the torque number matches peak torque from the LS2, it is reached 400 RPM lower, which certainly improves the feel of the engine. i have replaced just about everything and now my transmission is doing. * EXCHANGE ÿ PLUS ÿ $ 1500. Don't buy one lol. It's a TH400. RPM's at 65 go up to 2383 in exchange for a 7. They have an aluminum case and. 78 to 1 ratio allows you to go to a numerically higher rear gear to improve your 60ft. One is to buy an aftermarket tachometer, and two is to recalibrate the stock one. I figured if I entered 26. As automatics go, it is considered the heavy-duty version of the Turbo Hydra-Matic 350; they are. Going auto with TH400 in 03 cobra This car is just going to be a around town car no highway, ill probably put 355s back in it for a little rpm help and wish i. It ended up being 55 degrees of advance. This app helps you create a good grade description for your item, which you can then print to DYMO inventory labels if you have the required DYMO Labelwriter Turbo 400 or 450 printer and Dymo Labels #30256(both available on Amazon. At 400HP, and as much torque across a broad RPM range, it had the impressive ability to plant the driver deeply into the seat. 56 and the best thing I can say about it is that it makes a good low rpm cruiser, even with 245/60s. The TH400 is well known to be a heavier duty trans. Hays Twister Full Race Torque Converter 1965-91 GM TH400, 4200-4500 RPM stall 9. I used to drive everywhere with a TH400, 2800 stall, and 4. This converter can be ordered with stall speeds of 2000, 2300, 2600 or 2800 RPM. Now, lock up the converter, and that drops to 2,600 rpm. 08, and its fine. It is an automatic and shifting is very hard. Sure, you can get an overdrive tranny, but my TH400 was freshly rebuilt. The engine is governed at its red line of 3600 with the DB2 injection pump but DDA states that 3000 was the max sustained RPM under load. It's especially quieter during rapid acceleration when a gas engine would be buzzing away at 5000 rpm while the TDI is loafing along at 3000. Dont run the 4. The basic purpose of installing a modified torque converter is to allow the engine (RPM) to increase to where the engine is making greater power before driving the wheels, thus allowing the vehicle to accelerate from a standing start much HOW TO SELECT THE RIGHT HIGH STALL CONVERTER Manufactured In-House by TCS Products Toll Free: 1-800-960. A real good balance of go versus highway rpm is a 3. 0 Inlet, Horizontal Oil Filter, Rear Sump, Rotary Pump] WITH ÿ ONE YEAR FACTORY PARTS & LABOR WARRANTY. Converters can range from 11 and 12 inches in diameter all the way down to 7 inches. 73's but from what I experienced with the 3. Two-door GM intermediates lost three. 56, even though the factory Rubicon used. The 355 was balanced and that's it!. Hays Twister Full Race Torque Converter 1965-91 GM TH400, 4200-4500 RPM stall 9. 0L V-10 gasoline, 5 speed NV4500, NP241HD and 4:10 Dana 80. Common ratios in Jeeps include: 3. 73 gears in my 79 400 4sp TA. Stock Turbo 400 Gear Ratio. This model has a conservative rate of 450 ft. This rpm is often MUCH higher than you would thinklike 5k or so. The GEAR VENDORS in combination with the Powerglide is an affordable, reliable, and very efficient package. Using a TH400 as an example, First gear is 2. and i was wondering how my streetability will be. Our fuel-efficient Maximizer ™ High Torque Towing Converter is designed to reduce the slippage found in all non lock-up torque converters. They are bullit proof transmissions but if you do a lot of highway driving your rpm's will be up there, and your gas milage will suffer. I was so stunned to discover my slippage wasn't 200 RPM. Just need to check, if it's at the right speed. I didn't drive over 55 @ about 3600 rpm. 73 1966 4L80E - 3. 10 will be much better if you tow often. But that's got a ton of low rpm torque. Instruments: 160-mph speedo, 7000-rpm tach, 99,999 odo, 999. 88 gears and 38 " tires gives the RPM of 2805. 91 and then again with 336, dividing all by 30 gives you the before RPM of 2846. 6 second difference to 60mph. The 3 speed turbo 400 trans is just fine, I'm never wanting for more power. I just swapped out the TH400 in my M1028 for an electronic overdrive 4L80E. When you get it up and running find a place to run it up to a fully boosted or full power hit around 6500 rpm. A higher gear ratio offers greater fuel economy on the highway, and a lower ratio will be less efficient. First consideration was to install a 700R4 with overdrive but didn't want to loose the beefy TH400. 10 Most Common Transmission Problems Determining what problem(s) your car has may seem like an impossible task, especially to the untrained eyes and ears of the average driver. The history of Grand Am starts with Pontiac executives noting incursion into the US market by Mercedes and BMW. I hope this all heaps people out with making the decision if they want to go the Th400 way or not. The Turbo 400 transmission, known officially as the Turbo-Hydramatic and commonly referred to as simply the TH400, was part of a family of automatic transmissions developed and produced by GM. A lot of highway I would go 3. 56 and the best thing I can say about it is that it makes a good low rpm cruiser, even with 245/60s. With the 4L60E previous best was 11. APR has developed an excellent entry level turbocharger upgrade for the 2. Lalos53Ford , Feb 25, 2010. If it was in second gear, even with a 3. 11 with a posi unit that I picked up for. Multiply those RPM's by the overdrive ratio to see what RPM's would be with a new trans. How to Determine Gear Ratio. This is typical with stroker motors and big blocks. On a Stude with 3. 73 is probably the best all-around ratio. 5 liters) Remote sump 10 U. ) Tire diameter in inches (24. Punch it and the gears last longer. Chief RPM is shown with two different physical appearances in Cars; he is colored yellow the first time he is seen in the film, whereas he is colored white throughout the. It tips the scales at 135 pounds and features a cast-aluminum case with a 2. I flushed the transmission and did tune up bout 5-6 months ago, been checking the fluid periodically not until recently did it seem foamy cuz it has bubbles in it and showing way past the hatchmarks. I have a new project 1969 chevelle. I didn't think 4. I honestly think my car is faster with the 400 but i have no back to back data. 68 OD ratio and 3rd gear is 1. Same as a Dodge 727. How to Determine Gear Ratio. 88:1 gears, 35" T'birds, daily highway use w/ occasional towing and a highway rpm of about 2750-3000 rpms. An overdrive gear of this nature on the 200-4R is equivalent to a low RPM when one is driving down a highway. 31 for street/highway use and then I would run a 28" tall tire like a 275/60-15. 08, and its fine. Highway Fidelity: When Cars Came With Record Players. RPM Kit 52~53 MPH @ 6,690 RPM. RPM Magazine is a worldwide motorsports publication distributed in 34 countries and can be found on popular newsstands. If you do go this way please keep us posted on how it came out. The W-32 option was 350 HP and outside air inducted with the TH400 trans. custom built aluminum grill shell. The shorter gearing allows a less-torquey engine to accelerate faster, and high RPMs at highway speeds is the tradeoff. Now, lock up the converter, and that drops to 2,600 rpm. The vehicle performs very well on the highway with a smooth and very quiet ride due to the quiettune technology. This calculator will provide the speed of the vehicle based on the transmission gear ratio, the engine RPM, the tire height, and the ring gear and pinion gear ratio in the rear end axle differential housing. 31 for street/highway use and then I would run a 28" tall tire like a 275/60-15. 356 Gauges "356" 120MPH 100mm Speedometer. 5 and it's a bigger truck. Pontiac’s transmission offerings for 1964–1974 GTOs were similar to the transmissions offered in other Pontiac and GM models. I personally run a 400 turbo in my chevelle,,,with a loose Coan converter and 4. ADA Girdled Head Shell - Yamaha 701 / 760 YA701M. MTX Terminator TNP212D2 12" Dual Loaded Sealed Car Subwoofer Enclosure with Amplifier BRAND NEW. The 2004R gear ratios are 2. Introduced in 1964, the TH400 is an automatic shift, three-speed, longitudinally positioned transmission. In order to minimize the slipping you run at higher RPM. Now 5speeds. When the T/C locked up (at around 30-35 mph) the entire truck would shudder as the RPM dropped to somewhere around 900. Also has a ratchet shifter. Chevy Performance’s Rusty Sampsel explains the lineage of GM’s overdrive automatics: “The 4L60/65/70 are basically a TH350 with the overdrive added, and the 4L80/85 are a TH400 with the overdrive added,” he explains. This is a superior alternative for most cars thinking of going to a Th400. This is an excellent choice for motor homes, tow vehicles and other heavy load applications. So I swapped out the 3. Ecklers Chevelle offers this awesome, Crossmember, Th400/200R4 Transmission. Reliable and affordable, the three-year design cycle kicked off by the '68 version would outsold every other true high-performance machine of the day, and beat its share, to boot. These transmissions mate a three-element turbine torque converter to a Simpson planetary geartrain, providing three forward speeds plus reverse. It ended up being 55 degrees of advance. Ideal world: aggressive gear ratio and 4, 5 or 6 gears available to keep rpm manageable. Save money when you buy your transmission and converter together!. All New Patent Pending " Converter Boss" Has Two Knobs. Nissan RB26DETT engine reliability, problems and repair. Torque Converter, Street Master, 2,500 rpm Flash Stall, Heavy-duty Sprag, Chevy, TH350, TH400, Each ( 18 ) Part Number: HUP-GM25HD More Detail. Multiply those RPM's by the overdrive ratio to see what RPM's would be with a new trans. #N#The speed in MPH is miles per hour. I ran a 255/60/15 tire. Guys use the 5 pinion gear planet carriers from the 4L80E's in the old Turbo 400's as an effort to increase their durability. As previously noted, transmission choices were minimal. 470hp/483ft-lbs. Wep TH400Plus comes with features of High printing speed of 250 mm/sec, High Quality printing of 203 DPI ,Print head life of 150 km. I have sought out many options. 50 a gal gas you could save $1000 going from 10 MPG to 17 MPG in about 10,000 miles. rpm = 2,587. Our '72 Trans Am is equipped with its numbers-matching 455 H. Hello, I'm new to the forums. The LT1 series Gen II small block Chevrolet is very similar to the standard small block. Spark Plug Gap. 56's the truck has a max speed of @50-55 mph at roughly 2450-2750 rpm. At 70 I was turnning about 2700 rpm which isnt too bad for highway crusing (kept me from speeding alot too lol). It occasionally shifts into third gear within a mile of driving, but after that, it cannot shift over second gear. I've recently switched to a 3:42 with a Turbo 400. •The 700-R4's 3. i dont have to drive alot on the freeway,but still want a few opinions from people who are driving a th400 daily with a 4000 stall. Running a 8. 78 to 1 ratio allows you to go to a numerically higher rear gear to improve your 60ft. 91 and then again with 336, dividing all by 30 gives you the before RPM of 2846. If you do go this way please keep us posted on how it came out. Vacuum-operated modulator valves are installed in automobile automatic transmissions for the purpose of controlling shift patterns. And the quicker it is off the line through the acceleration phase. PPE offers a complete stand alone wire harness for the Duramax engine from 2001-2010. 41 set of gears. A lot of highway I would go 3. RPM's at 65 go up to 2383 in exchange for a 7. Advance Adapter The GM 700R4 main shaft kit is used when replacing a TH400 in model years 1985-91. 25 inch tire size on the superchips programmer it would be right on for the rpms that 4. I put on headers with a 3 inch pipes that lead to straight thru mufflers. Capture the MPH and the rpm of the pull if you don't have a log on it. Ideal world: aggressive gear ratio and 4, 5 or 6 gears available to keep rpm manageable. and it is an easy install to replace a TH350. Lalos53Ford , Feb 25, 2010. com or at Office Depot). Would love to here some feedback on them from you guys. Construction RPM acronym meaning defined here. 48 First gear by the 4. 21) to go highway speeds. Bad Torque Converter Clutches – Modern torque converters will lock to create a true physical connection between the automatic transmission and the engine. 42" tires at 1,500 rpm. Reasons for overheating include low fluid levels, leaks, burned, old or dirty fluid, or problems with the solenoid. Posted over a month ago. I have plenty of power. Note: Any ATI TH400 can be made to PG length for an additional charge. While the TH400 is far stouter, it is longer and heavier than a TH350 and has a 2. But that's got a ton of low rpm torque. Jump to Latest Follow 1 - 20 of 29 Posts. Im running a 3600 pi, with an auto rear end and the car raps up pretty high at highway speeds. I can rev to 1800-2200 all day long and the compressor occasionally dis-engages/engages - as expected from a cycling clutch system, but I feel like this was a design flaw on GM's behalf. The ratio is. Step Van, 105 HP @ 2,500 RPM, COMPLETE REMANUFACTURED TRUCK ENGINE [LMRO Turbo, 3. My RPM's went up about 1000 from what they were with the 2:73 I had in it before at highway speeds. rpm = 70 x 3. It is a weekend car, go to shows and car meets for the most part. For the Tire field, enter your tire diameter in inches. They are significantly more expensive to build correctly and it seems to be kind of a black art. Check the transmission fluid and make sure that it’s full and red in color. Just type in your info, press calculate, and you'll get the right gear ratio without the guesswork. Anything over 50 mph and the rpms blow, engine screams. Man wouldn't that be nice having a steeper 1-2 gear with my 3. 08 gears and a TH400 presumably. The voltage dropping out on the highway is a sign of a dying alternator, likely bad brush springs. I had a TH400 transmission out of a dragsterwith a 2000 stall converter. The engine is governed at its red line of 3600 with the DB2 injection pump but DDA states that 3000 was the max sustained RPM under load. I have a 1970 GTO with a Pontiac 455 and TH400 with a 900 CFM HP EFI TBI system on it. The RPM at approximately 60 MPH with the 4. The mission was simple. When you get into pulling that long hill and cylinder temperatures hit the roof, detonation will set in. 55's in my 65 442 (stock rear) in favor of the 3. Well thats a vague question really as most people have different ideas on what is good mileage. Replace the alternator, and verify that the pulley size is correct, may fix your RPM issue. While it was fun around town. The 4L80E keeps doesn’t drop the engine rpm as much between shifts because it is a heavy duty transmission and assumes that you could very well be pulling a load. Muncie Close 4sp pre-'74. I have a th400 with a 3. Aftermarket building techniques take it well past that figure. •The 700-R4's 3. Respected automotive technical author Cliff Ruggles takes readers through the complex rebuild procedure of GMs TH-400 transmission in this great new book. Reason im asking is i dont want to be going 65 or 70 down the highway and pushing 3000 - 4000 rpm cause the TH400 isnt beffy enough to handle the cummins. 00(29%) Product Available. 08, and its fine. what rear gears to run with. 5) can be used. Article may contain affiliate links. According to the calculators on the Randy's Ring and Pinion website (www. The main and rod journal diameters and other features are. 10 gears with the turbo 350 my dad ahs a 72 nova with a turbo 350 trans and 3. Capture the MPH and the rpm of the pull if you don't have a log on it. Free Shipping! $ 4,665. Mopar Chassis ID. A highway cruising speed of 60-65 MPH is considered a good target speed. * EXCHANGE ÿ PLUS ÿ $ 1500. 48 second, and 1. The GEAR VENDORS in combination with the Powerglide is an affordable, reliable, and very efficient package. This transmission was introduced in 1982 as a replacement for the TH350 transmission, with the primary goal of improving fuel economy. It's not as aggressive as the 4L60E though, which has a final gear ratio of. For those of you who didn't follow my build post, I put a GM 200R4 tranny in my Dart Sport. Optional with Quadratrac was low-range unit - bolt-on to the rear of the case. 0L Turbo Camaros with the LTG engine. Alright, my RPM's at 70mph are at 2500 in fifth gear! This seems a little odd as my camaro V6 rode at just under 2 grand, my silverado V6 ran at just over 2 grand, and my jeep gc hemi ran below two grand at 70, I figured that with the V8 it wouldn't be working as hard to run the speed limit. To Change the Settings you Push the Knobs in and Turn, No More Jets to Change No Fluid loss. 23 gears I have now, I run just over 2500 rpm at 60 mph. 55 rear gear. Construction RPM acronym meaning defined here. Pull the flywheel cover and run the engine check for run out in the converter. In order to minimize the slipping you run at higher RPM. In order to minimize the slipping you run at higher RPM. (I bet his transmission got a lot hotter too, but it held up. It is an automatic and shifting is very hard. I am considering converting my current fixed pitch TH400 over to variable pitch in the near future. This chart provides values that represent a 1:1 ratio on a manual transmission. In other words, it is the perfect final drive ratio for attaining top speed. 42 is better for MPG if you do highway driving, while 4. Reason im asking is i dont want to be going 65 or 70 down the highway and pushing 3000 - 4000 rpm cause the TH400 isnt beffy enough to handle the cummins. 27 automatic, 3. The 700R4 uses a lockup converter. While these transmissions are respected for their durability and versatility, there always comes a point where the old transmission shows signs of wear. The Maximizer Towing Torque Converter has stall ranges from 1000 to 1200 rpm, and is an excellent choice for all heavy load applications, including motor. This rpm is often MUCH higher than you would thinklike 5k or so. 08 gears and th400 between speeds of 60-70 on the way back from myrtle beach. When the T/C locked up (at around 30-35 mph) the entire truck would shudder as the RPM dropped to somewhere around 900. , to use the engine for their autos as well. *** Calculated using a 1:1 final drive ratio (No Overdrive). 700R4 Transmissions: A Comparison. mr barry back in the mid 80's i/we made a plate to bolt the 4+3 od to the th400 we used a short 2x2 output shaft and since the od runs atf you dont have to run a seal between the 2 when gm put it on the warner super t-10 the seal leaked and the gear oil in the od is what caused the problem the o/d unit also has a pump in it but when we hooked. B&M Holeshot 2400 Torque Converter, 1965-91 GM TH400, 1968-81 TH350. RPM Act Introduced in Congress Aims to Protect Americans' Right to Build Race Cars Make it legal for you to do whatever you darn well please with your non-road car. Set Descending Direction. We can do some quick math on the engine rpm at cruise highway speeds. I honestly think my car is faster with the 400 but i have no back to back data. An air filter gets dirty. Versus later electronic models (such as the 4L60E), the 200-4R is both more affordable and simpler to work with, although concerns around the integrity of the TV cable and difficulties. After blowing up dozens of 200's, i love the confidence it gives me. Running a 8. Instantly shave 2-4 tenths off my 60 foot. I am currently running a 3500 stall with a GV and I would really love to. This seems a bit high for the TH400 with stock P235 tires. rpm = 70 x 3. When I let go of the gas a little bit I can feel the truck kind of pull and the RPM's will go back to 1000 -2000 and my MPH will start going up. But that's got a ton of low rpm torque. The GEAR VENDORS in combination with the Powerglide is an affordable, reliable, and very efficient package. That would make my final drive ratio 10. The manual for a TH400 seems to be better written - the TH400-S manual appears to have been copied from the TH400, but some excerpts were simplified and edited by a non-English speaker. 99 Add to Cart. rpm = mph x gear ratio x 336 / tire diameter. Find many great new & used options and get the best deals for TCI BreakAway Torque Converter 1965-91 GM TH350 TH400 2400-2600 RPM Stall 11" at the best online prices at eBay! Free shipping for many products!. With the engine you have, I really don't see a problem with power or acceleration with 4. It's especially quieter during rapid acceleration when a gas engine would be buzzing away at 5000 rpm while the TDI is loafing along at 3000. You have the extra torque of a good, mild 383, so you shouldn't have to wind the rpms up too far. Most of the buick guys I talked to seemed to like them. Recon Turbo 400 Trans $2750. them for a highway gear, either 3. 56 behind a 305 and TH350C. It weighs a substantial 12 pounds, and in First gear, it must counter rotate at 85 percent of engine rpm. View as Grid List. Maximum engine power: "555 bhp ( 414 kW )" Maximum engine torque: "550 lb-ft ( 746 Nm )" The 6L90 transmission is slightly longer and taller than a comparable configuration 6L80 due to it's beefier internals. Muncie Wide 4sp pre-'74. Most mild race cars will use between 3500 to 4500 stall speeds on. Bolt Circle Diameter: 11. Notably, the American sports car was usually without luxury features and the luxury car without sport features. The only thing that is different with the 700 is the. II IFS, 351W bored & stroked to 395c. 55 rear gear. It can do at least 105 mph at 5600 rpm. happens its around 32-3300 rpms when it happens to me. Proper RPM at highway speed (16/19) 5/5/06 9:20pm. Then, change Richmond's performance gear ratios and beat your best time! This calculator will help your hot rod or street machine get to the next level without red-lining your engine. The choice of a direct-drive (1to1) or overdrive (usually 30%) transmission will determine driveshaft RPM at cruising speed. Find many great new & used options and get the best deals for Big End Performance 32002 GM TH350/TH400 Street Torque Converter, 1900-2400 RPM at the best online prices at eBay! Free shipping for many products!. The car it would be going in is my 69 Camaro with a 408sbc. 27 automatic, 3. Jimny to many RPM on highway - Higher gear ratio × A place for more technical discussions. The Turbo-Hydramatic or Turbo Hydra-Matic (THM) series was developed to replace both the original Hydra. 74 nova with 3. 42 is better for MPG if you do highway driving, while 4. My '70 has the 2. Add to Wishlist. The history of Grand Am starts with Pontiac executives noting incursion into the US market by Mercedes and BMW. 73 gears- i will need to do some highway driving to get to teh clostest 1/4 mile track and i would like to use it as a good I run a 3. PPE offers a complete stand alone wire harness for the Duramax engine from 2001-2010. The higher the stall, the more slipping and the more heat is generated. 470hp/483ft-lbs. Note: All testing performed with 1/3 tank of fuel, sea level elevation, air temp 80-degrees F. Although extremely durable, the TH350 and 400 are not the best high-performance automatic transmissions for your Shark. At some point, even the best transmissions need to be rebuilt. An automatic transmission, also called auto, self-shifting transmission, n-speed automatic (where n represents its number of forward gear ratios), or AT, is a type of motor vehicle transmission that automatically changes the gear ratio as the vehicle moves, meaning that the driver does not have to shift the gears manually. Adam Wartell Lifetime Member C3VR Founder Send Private Message Eagleville, PA - USA Vette(s): Used to own a 1979 Corvette now owned by JB79 Joined: 11/1/2001 Posts: 15403. We offer Powerglide, TH400 and 4L80E conversions that utilize the C6Z06 rear diff and for extreme race applications we have a 9in IRS setup that fits in the rear. Multiplying the 2. Highway RPM. 11's if it's a weekend-only machine that will never see extended highway driving), and a 2400-2800 rpm stall converter. I have a th400 with a 3. If your transmission is running hot, be aware of possible causes. Now try a set of 35's on for size. With the car in park engine running slowly rev it up to about highway speed (2,000 - 2,500 rpm) and let it back down slowly to idle and see if you can reproduce the noise while sitting still. what transmission is the best to use for hotrodin i have been told the 700R is good but has a lot of problems with it but i want overdrive so i can cruise on the highway without having a lot of high RPM s or would i be better runing the 350 turbo and not have any problems i have two transmissions i have a 700 R and i have a 350 lockup so guys let me know what would be the best transmission to. The Turbo 350 has been used in many GM cars and some Chevy Blazers. Non-Lock Up. 10 that comes with the Rubicon should be the smallest gear available on any model IMO. The Ferrari 400 really dosen't need to lower its highway rpm but needs to improve the off the line acceleration. Two-door GM intermediates lost three. 41 set of gears. I have 373s in the rear of my s10 with a th350. In fact they are so similar many of the internal hard parts will DIRECTLY interchange between the two. You will be running in higher RPMs and may initially be afraid of it, but it doesnt hurt the car. 10's i would run a 5 or 6 speed trans to spin lower rpms. Rear Suspension. They use similar internals, exhaust manifolds and oil pans. 1963-1973 3 speed models with Chevy engine. Qty: Add to Wishlist. 08 rear gear at highway speed (75 mph and higher) it would be 4100-4300 rpm. I had my 383 in the 80 with a decent th350 with the. It doesn't seem to shift over second gear. Why can't the transmission be geared to run in top gear, 75 MPH, 2500 RPM? Wouldn't this result in reduced wear and increased fuel economy?. My RPMs will go up from 2650 to around 2774 in 4th @ 60 but I it would help with the take off because my final drive ratio would go from 8. com has a mucie M22Z with a first gear of 2. Find TCI Breakaway TH350/TH400 Torque Converter 240900 at LSXceleration with Free shipping on qualifying orders! Designed for efficiency at highway cruising speeds and to launch hard at wide open throttle, (4100-4200 RPM) Bolt-Together Billet Converter w/ Patent-Pending Triple-Disc Lock-Up Clutch Building off the success of their bolt. Toll Gates,Jewellery shops, Electric and water departments, Hotels and Restaurants, shops. At this speed, in sixth gear, my MINI, and a lot of other cars, turns at 3000 RPM. Re: 4l80e shift problems: justin: 3-11-08 '95 k2500 suburban 5. Q car year: 1988 car model: 528e Recently, after starting my engine, the RPM went to 3000-3200 and continued to run that high even after warming up. 9 trip odo, oil press, water temp, ammeter, fuel level, clock while as hot as anyone needs on the. The colors represent ideal RPM’s at highway speeds (65). The TCI® SUPER StreetFighter® Transmission for Chevy engine applications is tough enough to withstand the rigors of the toughest street machines up to 875+ horsepower with a non-supercharged system using pump gasoline. Rpms rev higher until switches gears and seems to coincide with a "winding" noise, happens even when idle but is worse on acceleration. The base V8 in the 442 was 400 cu in, 4bbl carb. We are buying another truck for multipurpose use, highway and off highway work. I run around 2600 rpm at 70 mph on the highway and seems to be just fine. Input Spline Quantity: 30. All specifications, performance and fuel economy data of Buick GS 400 Stage 1 Sport Coupe TH-400 (291 kW / 396 PS / 390 hp), edition of the year 1969 since September 1968 for North America U. Calculating for the after ratio of 4. 08 gears and a TH400 presumably. Reading Time: 20 minutes The modern automatic transmission is by far, the most complicated mechanical component in today’s automobile. Muscle Car Image Gallery. The 700R4 uses a lockup converter. Automatic transmissions contain mechanical systems, hydraulic systems, electrical systems and computer controls, all working together in perfect harmony which goes virtually unnoticed until there is a problem. International Full Size Jeep Association > Tire Kickin' > General FSJ Tech > 400 turbo shift point adjustments. The base V8 in the 442 was 400 cu in, 4bbl carb. Now is the time to order the best driveshaft with great customer service and a knowledgeable staff to guide you through your purchase. Stock Turbo 400 Gear Ratio. Alright, my RPM's at 70mph are at 2500 in fifth gear! This seems a little odd as my camaro V6 rode at just under 2 grand, my silverado V6 ran at just over 2 grand, and my jeep gc hemi ran below two grand at 70, I figured that with the V8 it wouldn't be working as hard to run the speed limit. Muncie Close 4sp pre-'74. Engineered for precision and durability, Spicer end yokes help to minimize noise and vibration to keep your driveline running smoothly. 08 gears and th400 between speeds of 60-70 on the way back from myrtle beach. The 700R4 uses a lockup converter. With a near stock engine with mild bolt ons they're my pick, although most people recommend 3. After blowing up dozens of 200's, i love the confidence it gives me. The result will be reduced rpms at highway speeds and a little larger gap between gears but the first gear will be about the same. The pan is secured with 13 bolts. The 4L80E keeps doesn’t drop the engine rpm as much between shifts because it is a heavy duty transmission and assumes that you could very well be pulling a load. Running a 4 core Bronco radiator with internal cooler. 9sec with a Increase of top speed by 30% Fuel Economy: Without armament fuel economy is increased to approximately 20mpg combined city and highway driving and approximately 23mpg highway. 10 rear axle results in a final drive ratio of 10. The higher the stall, the more slipping and the more heat is generated. 00 REFUNDABLE CORE DEPOSIT FREIGHT INCLUDED IN PRICE US 48. I am thinking about getting an M1009 CUCV, with 3. 8:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3. The reason is the TH400 is a strong transmission and I get to keep everything the way it is (as far as the inside of the car goes). Could not run with traffic on the highway unless you liked high RPM. 5 liters) Remote sump 10 U. It seemed like a perfect time to show how good the rpm is now. The main and rod journal diameters and other features are. The Pontiac Grand Am is a mid-size car and later a compact car that was produced by Pontiac. 1st gear is 2. 563 Hwy 20 W, Fenwick, ON L0S 1C0, Canada. It should be mentioned here that lower axle gears (higher numerically) are inherently weaker. 48 and third is 1. The R32 and R33 used a 5 speed transmission from Nissan(FS5R30A), and the R34 GT-R used a 6 speed transmission from Getrag(V160). Our Trip to RPM Speedway Go-Karting in Stamford is a Highway to Fun 7/15/18 - By Ally Noel It’s been a little while since a new family entertainment venue opened in lower Fairfield County. I will probably only be putting 100 miles a week on. Redesigned and strengthened, our Super Hydra 400® transmission cases address weaknesses and add features that improve every aspect of the Turbo 400. 75 overdrive. 73 102 4L80E - 4. ) Tire diameter in inches (24. It seemed like a perfect time to show how good the rpm is now. Running a 8. 5 liters) Remote sump 10 U. Q: What does kickdown mean in an automatic transmission? A: Kickdown is a downshift in an automatic transmission triggered when the driver pushes the car's accelerator to the floor. Switching over to GM`s beefy TH400 is a relatively easy change. With the correct gear choice and tire size having no OD is a non issue. This allows the transmission to operate more efficiently at higher RPM. April 28th, 2015, 04:31 AM And the highway cruise will be great, too. With the 4. 73's tend to be a bit too buzzy on the highway for my taste (especially with my taste in exhausts), and anything lower will make you a little sluggish off the line. Is it or would it be fine for a four hour trip on the highway.
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