Turbo 400 transmission 4 speed1/12/2024 However, if you want to push your TH400 beyond that level-say 500 or 600 horsepower-you will likely need to upgrade some parts like clutches, bands and planetary gearsets with higher performance versions. Generally speaking, stock models can take up to 400 horsepower without any modifications or upgrades. It has been praised for its strength and reliability, but how much horsepower can it really handle? The answer depends on the exact model of TH400 you are using. The TH400 transmission is a popular three-speed automatic designed by General Motors and used in many GM, Buick, Pontiac and Oldsmobile vehicles from the 1960s through the 1990s. Ultimately whether you choose one or another depends on your specific needs but if you’re looking for something more robust then the TH400 should be your go-to choice. On top of this, because of its larger size it can accommodate a greater variety of aftermarket upgrades allowing owners more flexibility when modifying their vehicle’s powertrain setup. In terms of performance capabilities, the TH400 tends to be more reliable at high speeds due to its heavier build design which makes it less prone to failure under duress. The main difference between them is that the TH400 has a much higher torque capacity than the Turbo 400, making it better suited for heavy duty applications like towing and hauling large loads.Īdditionally, while both use an aluminum case, the construction of each is slightly different with small differences in internal components such as gears and bearings. While they might share some similarities, they are actually two different transmissions. The TH400 and Turbo 400 transmissions are two of the most popular transmission types used in high-performance vehicles. This transmission also works well with both gasoline engines as well as diesel ones so you have plenty of options when choosing what type of engine you would like to use with your TH400 setup. The TH400 comes in two different configurations: heavy duty (HD) and light duty (LD).īoth versions are available with either a long tailshaft or short tailshaft depending on your application needs. As such, this transmission is popular among car enthusiasts who want to increase their vehicle’s power or upgrade their ride with aftermarket parts. The TH400 is known for its robustness and durability it can handle up to 500 horsepower without any modifications.Īdditionally, the design of the TH400 makes it relatively easy to modify for even higher performance levels. It has been used in many of the company’s vehicles since its introduction in 1964, including cars, trucks, vans and SUVs. The TH400 transmission is a three-speed automatic transmission that was developed and produced by General Motors. Today, aftermarket manufacturers continue to produce components suitable for rebuilding these transmissions making them popular choices among classic car enthusiasts who want to keep their classic Chevys running strong for many more years to come! What Does a Th400 Transmission Come In? The original version had an aluminum case with a finned tailshaft housing but later versions featured cases constructed entirely out of cast iron with non-finned housings. It became the standard automatic transmission behind the big block engines offered by Chevy during those years. The TH400 saw extensive use across the entire range of GM’s full-size cars and trucks, as well as some mid-size vehicles. It is known for its dependability, strength and power handling capabilities, which made it an ideal choice for use in high performance applications. The TH400 transmission was a three-speed automatic transmission that was produced by General Motors and used in Chevrolet vehicles from 1964 to 1990. The TH400 is still a popular choice today among hot rod builders and racers, powering a variety of classic Detroit makes including Chevrolet, Buick, Cadillac and Pontiac.Ĭredit: What Years Did Chevy Use the Th400 Transmission? It quickly became a popular choice for muscle car enthusiasts due to its robustness and reliability. The TH400 transmission was first introduced in 1964 as an option for GM cars, such as the Pontiac GTO and Oldsmobile 4-4-2. The TH400 is still used today due to its strength and durability making it an ideal choice for high-performance applications. Some of the most popular models to come with this transmission included the Camaro, Chevelle, Corvette, Monte Carlo, Cutlass Supreme and Firebird.Īdditionally, it was also found in various Cadillac models such as the Eldorado and Toronado Buick Riviera Oldsmobile 442/Cutlass Pontiac Grand Prix/GTO/Trans Am Jeep CJs Chevy Blazers/Suburbans/Tahoes and GMC Jimmy’s /Yukons. It was used in many GM vehicles, including Chevrolet and Pontiac cars, as well as trucks from both brands. The TH400 transmission is a 3-speed automatic that was first introduced by General Motors in 1964.
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