![]() ![]() GM changed the naming strategy of its automatic transmissions around 1990 to a number such as 4L60 where the 4 means 4 speeds, the L means longitudinally placed in the vehicle and a strength number of 60 in this case. Today the TH-400 is a popular automatic transmission for street cruisers, hot rodders and drag racers. The TH-400 is an extremely popular transmission in its day as other non-GM companies used the TH-400 including Jeep, Jaguar, Rolls Royce and AM General. The basic fixed stator Turbo 400 pump body and pump cover castings have been. The TH400 is an aluminum cased three speed automatic transmission that was produced by GM. Performance Automatic Racing Transmissions THM 400 transmission, and is found in both passenger cars and trucks. TH400 Transmission Specs, ID, and Common Problems. Bellhousing, Case and Valve Body options available. The oil crunch in the 70s and 80s caused the phase out of the TH-400 3 speed automatic transmission in favor of the more fuel efficient 4 speed automatic 200-4R and 700R4 automatic transmissions. Our Products > TH400 Racing Transmissions - Level 4 Click To Enlarge Turbo 400 Performance Racing Transmissions by FTI Performance - FTI Level 4 TH400 Performance Racing Transmissions are built with Unbeatable Performance & Durability. ![]() Our TH400’s use exclusive proprietary parts that are only. Our stock rebuild is strong enough for over 600 HP repeatedly yet functions like a stock transmission. We do stock rebuilds all the way up to 3000+ HP Pro-Mods. These transmissions are remanufactured (by our transmission specialist with over 30 years experience). TH-400 automatic transmissions are a fantastic 3 speed automatic transmission and back up some serious GM torque from the small block 350 to the big block 396 and 454. We have extensive experience building the TH400 for all types of applications. TH400 transmission for Chevy small truck mid 80s 4×4. Originally the TH400 was known as the Super Turbine 400. 400 transmission parts TH400 transmission rebuild kits TH400 transmission shift kit Sonnax boost valve Lubegard additives Transgo performance shift kit. Cummins 4BT / 6BT to a Chevy 4L80E / 700R4 / 4L60E / TH400 Transmission. The following year, the TH-400 could be found in Oldsmobiles and then Chevrolet’s. Sbf Zf5 To Cummins Adapter Pilot Bearing Ford Zf 5 Transmission Trans Bushing It. The TH-400 was first introduced during the 1964 in Cadillacs and Buicks. ![]()
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