This booklet contains general description and overhaul procedures necessary to repair, overhaul or service the thm 400 transmission, and is found in both passenger cars and trucks. Respected automotive technical author cliff ruggles takes. And again the monster transmission people have been outstanding with helping me through the rebuild. For the 1965 model year, oldsmobiles, chevrolets and pontiacs were equipped with the turbo 400. At some point, even the best transmissions need to be rebuilt. Time commitments may vary as this is a custom built transmission. Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, streetstrip, hot rod, street rod and towing. Atsg chevy gm th400 turbo 400 transmission rebuild. Dont be fooled by others who use parts from unknown sources and charge next to nothing to rebuild. Our stage 2 th400 includes all the components in the stage 1 rebuild but is upgraded to a 34 element sprag and the corresponding direct drum, 6 clutch direct with carbon based frictions, 4 clutch intermediate, manual automatic valve body or forward pattern full manual upon request. Tools and equipment completely and correctly rebuilding an automatic transmission is not beyond the capabilities of the average automotive enthusiast.
Our stage 2 th400 includes all the components in the stage 1 rebuild but is upgraded to a 34 element sprag and the corresponding direct drum, 6 clutch direct with carbon based frictions, 4 clutch intermediate, manualautomatic valve body or. What i know is it has a tci full manual reverse vb with brake create topic. While the unit is indeed one of the stoutest of its kind, trouble can. While these transmissions are respected for their durability and versatility there always comes a point where the old transmission shows signs of wear. Gm turbo 400 transmission rebuild kits get the exact level kit. Turbo 400 kit th400 rebuild kit turbo 400 transmission. Man01 click here to view special tools for this transmission. How to rebuild or modify chevy turbo 400 th400 transmission manual book new. The turbo 400 threespeed automatic was launched in 1964 for buicks and cadillacs. How to work with and modify the turbo hydramatic 400. For a comprehensive guide on this entire subject you can visit this link. This repair manual contains general description and overhaul procedures necessary to repair, overhaul or service the turbo hydramatic 400 transmission, and is found in both passenger cars and trucks. Superbeefing the th 400 by mike niebuhr here has never been an automatic transmission more universal that t he turbohydramatic 400 from general motors it has been cast in over a dozen different bellhousing designs to propel an incredible diversity of vehicles, from the complete general motors l i ne to rm general hummers. High quality gm th4003l80 automatic transmission soft parts, hard parts, and high quality rebuild kits.
Its odd texasshaped oil pan distinguishes it from the turbo 350. Sk02 kit reverse cushion, corrects harsh reverse 6498. Gm turbo 400 transmission rebuild kits get the exact level. When it is time for a gm turbo 400 rebuild kit, whether for a muscle car restoration, high performance street vehicle, street rod, hot rod, or all out race turbo hydramatic 400, we have the transmission rebuild kit you need for the job. Our stage 2 th400 includes all the components in the stage 1 rebuild but is upgraded to a 34 element sprag and the corresponding direct drum, 6 clutch direct with carbon based frictions, 4 clutch intermediate, manualautomatic valve body or forward pattern full manual upon request. Turbo 400 th400 transmission heavy duty performance 4 tail. Jun 07, 2010 follow along as we dig up a th400 transmission from the junkyard and rebuild it up with help from performance automatic super chevy magazine. With his proven style, ruggles walks through the stepbystep rebuild and performance upgrade procedures in a series of fullcolor photos. Enthusiasts have embraced the reliable gm turbo hydramatic 400 threespeed automatics for years, and the popularity of these transmissions is not slowing down. Parts inspection, upgrade if needed to the 34 element sprag, dual feed the clutches, manual control of the 12 shift. The thm 400 transmission was first introduced in 1964 and was used through the 1990 model year with some engineering changes that occured during that time. How to troubleshoot a turbohydramatic 400 transmission. The turbohydramatic 400 th400 automatic transmission can be found behind large, powerful engines on chevrolet and gm cars and trucks from the factory, as well as jeep, cadillac, oldsmobile and many others.
How to troubleshoot, remove, rebuild and install howto book is a top notch diy resource for the turbo hydramatic family of transmissions. Sonnex makes extremely good performance products as does coan racing. Ni governor bore repair sleeve requires special tool 6498 ar th350. Thm 400 atsg automatic transmission service group pdf free online. Th400 manual fwd shift valve body instructions made simple from fti performance. This transmission service manual is the most comprehensive workshop manual available and is fully bookmarked for easy navigation. We have included the major changes and updates in the appropriate sections of this booklet. Rebuilding my craigslist score that wasnt a fresh rebuild as advertised.
Details about atsg chevy gm th400 turbo 400 transmission rebuild instruction service manual. Gm turbo hydramatic 350 repair, service manual repair, install. Hydramatic, turbine, 400, automatic, rebuild, overhaul, workshop manual, pdf, instant download, fully bookmarked, free manuals, sales literature, owners manuals. Now available with the award winning ati t400 sfi certified supercase. Install the manual shaft seal into the case with a driver until it is fully seated. A monster in a box rebuild kit will have all the parts needed when rebuilding your th400 automatic transmission. Follow along as we dig up a th400 transmission from the junkyard and rebuild it up with help from performance automatic super chevy magazine. This high energy th400 master rebuild kit with alto friction clutches and steel plates is a complete transmission rebuild kit. There is an army technical manual posted here with specific step by. General motors introduced the th400 transmission in 1964. This book is packed with over 256 pages and more than 700 photos and illustrations. Th400 turbo 400 performance racing transmissions fti. Our kits contain the same high quality parts that we use to rebuild our units. Turbo 400 th400 transmission 4x4 performance super duty.
How to rebuild modify gm turbo 400 transmissions by cliff rugglesover the last 50 years literally millions of gm cars and trucks have been built with turbo 400 automatic transmissions. The title of this book is how to work with and modify the turbo hydramatic 400 transmission motorbooks workshop and it was written by ron sessions. Those who choose to rebuild a th400 themselves should acquire a quality transmission manual such as a motor automatic transmission manual or motorbooks internationals how to work with and modify the th400 transmission by ron sessions before tackling the project. Turbo 400 on sale with free shipping, now offering th400, th400, monster 400 transmission, heavy duty th400 and heavy duty turbo 400 with new lower prices. Automatic transmission shift kits th400 transmission type. Btes aluminum direct drum, vasco input shaft, and valve bodies have been used by transmission builders around the world. Turbo 400 th400 transmission 4x4 performance super duty 4wd. Turbo 400 on sale with free shipping, now offering th400, th400, monster 400 transmission, super duty th400 and racing turbo 400 with new lower prices. The turbo 400 can also be rebuilt at home, but there isnt time or space to cover all the specifics here. One 1 turbo 400 full manual valve body one 1 separator plate and gaskets one 1 pressure regulator spring one 1 2nd gear release spring one 1 vacuum modulator plug and oring two 2 14 check balls step 1. Btes aluminum direct drum, vasco input shaft, and valve bodies have been used by transmission builders around the world to improve the strength of their turbo 400 transmissions.
Enthusiasts have embraced the gm turbo 400 automatics for years, and the popularity of these transmissions is not slowing down. Thm 400 atsg automatic transmission service group pdf. The th400 has recently become one of the best selling transmissions for high horsepower racing setups thanks to many new product designs. Over the last 50 years, literally millions of gm cars and trucks have been built with turbo 400 automatic transmissions. Gm turbo hydramatic 350 repair, service manual repair. First time builders will likely need a tech manual. Ati racing transmissions th400 drag racing transmissions. We have many th400 transmission rebuild kits to choose from so you get exactly the right parts in your turbo 400 rebuild. We have many th400 transmission rebuild kits to choose from so you get exactly the. The quarterstick i have is for forward body glide and reverse body th350 and 400.
I highly suggest you add this if you are a new builder or do not have a manual. Engineered to dominate, the turbo 400 ss mega monster transmission is tough enough to withstand the rigors of even the toughest street machines delivering tirespinning shifts race after race. When it comes to fullsize 4x4 trucks and suvs, the general motors turbohydramatic 400 th400 automatic transmission is perhaps one of the most. It is ideal for vehicles powered by engines producing up to 750 horsepower using pump gasoline. Due to popular demand we are offering a select few rebuild kits for the diy rebuilder. Turbo 400 transmission kit th400 performance rebuild kits. That being said, this transmission is commonly used in hot rods and paired with engines making far more torque, although these transmission also must commonly updated with some aftermarket parts.
Those who choose to rebuild a th 400 themselves should acquire a quality transmission manual such as a motor automatic transmission manual or motorbooks internationals how to work with and modify the th 400 transmission by ron sessions before tackling the project. Find great deals on ebay for chevy turbo 400 transmission and th400 transmission. Unfollow chevy turbo 400 transmission to stop getting updates on your ebay feed. Ati has t400 street rod and drag race transmssions for vehicles making 600 horsepower to 3,000 horsepower. You will feel empowered to tackle any tranny rebuild job with this book at your side. Before you tear into the transmission, we suggest you first study the troubleshootinoverhaul manual, add a bottle of our automatic transmission. This step by step detailed information on installing a fwd shift turbo 400 transmission valve body will take you from start to finish of the installation. Th400 no 2nd gear discussion in nonturbo tech questions started by 81shavedtrk, jul 4, 2011. Jun 17, 20 turbo 400 blueprint rebuild part 1 of 2 duration. Automatic transmission shift kits th400 transmission. Remove oil pump, manual shaft and speedometer gear housing.
Gm turbo 400 transmission rebuild kits get the exact. I was able to download for free a manual by atsg that provided all info. Thm 400 transmission, and is found in both passenger cars and trucks. This is a very well illustrated manual with valuable information on the tolerances that the th400, requires. This rebuild kit includes all of the friction plates, steel plates, sealing rings, metal clad seals, gaskets, orings, rubber piston seals, front band, filter, modulator, pump bushing, and extension house bushing.
Mega monster transmissions engineered to dominate, the turbo 400 mega monster transmission is tough enough to withstand the rigors of even the toughest street machines delivering tirespinning shifts race after race. The original article by jakeshoe can be seen in the hotrodders forum thread th400 build tips with photos. While these transmissions are respected for their durability and versatility, there always comes a point where the old transmission shows signs of wear. The turbo 400 is rated conservatively at peak torque of 450 lbft. Gm chevrolet th400 1964on rebuild atsg tech manual. There is an army technical manual posted here with specific step by step instructions for basic rebuild. Superbeefing the th 400 by mike niebuhr here has never been an automatic transmission more universal that t he turbo hydramatic 400 from general motors it has been cast in over a dozen different bellhousing designs to propel an incredible diversity of vehicles, from the complete general motors l i ne to rm general hummers.
How to rebuild or modify chevy turbo 400 th400 transmission. Cartech sa186 how to rebuildmodify turbo 400 transmissions, book. Atsg chevy gm th400 turbo 400 transmission rebuild instruction. Tools needed to rebuild th400 automatic transmission youtube. This was just like or maybe even better than observing my auto tech college. Turbo 400 th400 heavy duty performance transmission 2wd. Coan engineering provides a winning combination of performance transmission components and torque converters to racers across the globe by implementing the most advanced design and manufacturing techniques in the industry. Remove the retaining pin for the manual shaft, and slide the manual shaft out of the case. Turbo hydramatic turbine 400 automatic transmission. How to rebuild and modify gm turbo 400 transmissions. But there is something about it that keeps away even the most skilled automotive technicians.
With these manuals and dvds from atsg, haynes, master shift and others, youll be able to break down, modify and overhaul your gm transmission. Bellhousing, case and valve body options available. The accomplished builder can assemble a virtually indestructible transmission. This is hands down the best th400 rebuild video on youtube. Standard turbo rebuild includes balance we use high standard oem replacement parts in all of our turbocharger rebuilds to ensure you get the best possible quality.
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