What is a shift kit TH400?
What is a shift kit TH400?
The B&M® Shift Improver kits™ feature two options to recalibrating your 1965-1987 GM TH400, TH375 and TH475 automatic transmissions. First is the HEAVY DUTY set-up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles.
What should I do about my TH400 transmission?
Replace the filter and fill the transmission with new ATF (the TH400 requires six quarts). Do not put the bolts back on too tightly, as the gasket can become damaged.
Where is the dipstick on the TH400 transmission?
The first thing to check if you suspect that the transmission is acting up is the automatic transmission fluid (ATF) level in the transmission itself. The dipstick on the TH400 can be found inside the engine bay, on the passenger side toward the firewall (opposite the radiator).
Where can I find a Turbo Hydramatic 400 transmission?
The Turbo-Hydramatic 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. While the unit is indeed one of the stoutest of its kind, trouble can still occur.
How to rebuild your GM Turbo 400 transmission?
You can copy and paste this link to share: https://www.chevydiy.com/rebuild-gm-turbo-400-transmission-fundamentals/ The General Motors TH400 transmission is a strong unit and came in several configurations, including two bellhousing bolt patterns and several different overall lengths.
How to rebuild your GM transmission TH400 disassembly?
You can copy and paste this link to share: https://www.chevydiy.com/rebuild-gm-transmission-th400-disassembly-guide/ TH400s make an excellent highperformance automatic transmission, and have been used for decades for all sorts of racing applications.
What kind of clutch does TH400 transmission use?
The notched drum (left) uses a roller-type clutch, while the smooth drum (right) uses a sprag-type clutch. There is a 34-tooth upgrade (right) for the smooth drum, and it is highly recommended for any TH400 transmission to be used in a high-performance application. The direct apply piston may be made of cast aluminum (left)]
What’s the best way to rebuild a TH400?
Pay attention to the orientation. Use the old lip seals to be sure you select the properly sized new seals. Install the piston using a lip seal installed or feeler guage, be sure the piston depressions aling with the depressions in the center support, and it helps to use a tilting motion as you install it sometimes.
How is a GM Turbo 400 transmission built?
The transmission is built from bottom to top, starting with the bushing for the output shaft, and moving up through the unit from one sub-assembly to another. This Tech Tip is From the Full Book, HOW TO REBUILD & MODIFY GM TURBO 400 TRANSMISSIONS.
