What is a 3L80 transmission?
GM continued to use this unit in Chevrolet and GMC trucks into the 1990s after renaming it the 3L80 (three speeds rated to 8,000 RPM). One of the most appealing aspects of the TH-400 is availability. It is estimated that millions are still on the road or easily found in your local salvage yard.
How many gears does a Turbo 400 have?
three
The GM TH400 transmission is a three-speed automatic transmission that was longitudinally positioned behind the engine. This placement is aimed at providing the best power ratio and durability for rear-wheel drive. The TH400 has been rated at 450 ft.
How many gears does a Turbo 700 have?
4
The 700R4, also known as Turbo Hydra-Matic, is a 4-speed automatic transmission that was launched by General Motors in the early 1980s. It is an upgrade to the 3-speed TH350 automatic transmission and older models of rear-wheel-drive cars.
Which transmission is better TH350 or TH400?
They are completely different transmissions. The Turbo 400 is larger, longer, and heavier than the Turbo 350 and was designed to live behind higher-torque applications such as big-blocks. If you’re worried about the ultimate strength of the transmission, consult one of the transmission specialists for upgrades.
What does th stand for in TH400?
In its original incarnation as the Turbo-Hydramatic 400, it was first used in the 1964 model year in Cadillacs.
What does TH400 stand for?
The Turbo Hydra-Matic 400 transmission was General Motor’s heavy duty, 3 speed automatic transmission. It first appeared in 1964, where it was used as a production option for Cadillac cars.
How fast can a TH400 go?
Registered. you can go much faster than 55 depending on gear ration and tire size. The th400 is not an overdrive, but the 6.2L can spin pretty fast. The tranny should have nothing to do with it.
Will a 700R4 work without a computer?
To run a 700-R4 trans behind a carbureted engine without a computer, at the very least the TV cable must be hooked up to the carburetor and properly adjusted. Not just a simple kickdown cable like your TH350 analogue, the TV cable controls line pressure and shift points.
What’s better 700R4 or 4L60E?
If the transmission has a large 18-pin electronic connector above the passenger side pan rail, it’s a 4L60E, as seen here. If it has a cable connection near the cooler lines on the passenger’s side, that’s a 700R4. The good news is that either way, you win.
How much HP can a TH350 handle?
The Stage 1 TH350 is rated up to 450 hp. Those seeking something a little stronger can check out the Stage 2 version (PN PA35102) that holds 550 hp and retails for $1,500 with a real world street price of $1,175 from most vendors.