GM’s Turbo 400 (top) and Gearstar’s 700-R4 are positioned side-by-side. As you can see, both sport similar dimensions. The Turbo 400 is actually lighter by 21 pounds.

1. The rich architecture of the Turbo-Hydramatic 400 transmission demonstrates why GM spent a lot of time developing this automatic to begin with.

$8 turbo 400 hop. For the price of the trans pan, valve body, and separator plate gaskets, the firmness and quickness of GM Turbo 400 upshifts and downshifts can be dramatically improved ...

ZZP Performance Chevy Sonic features an EFR6258 turbo and a built engine, resulting in 400 horsepower and the ability to run the quarter mile in 11.5 seconds.

With two massive turbos and a fully built LS V8, this 1956 Chevy Apache dragster is one bad machine. ... The engine mates to a Turbo 400 transmission feeding a Currie F9 rear end, ...

Rust-free and factory-documented, this 1972 Chevy C10 Cheyenne offers classic style, ... paired with a Turbo 400 automatic transmission and a Positraction 3.73 rear gear, ...

When you think about classic Chevy muscle cars, ... This Chevelle SS came off the assembly line with the LS5 454 motor, a turbo 400 column-shifting transmission, Positraction, ...

This is no ordinary Camaro, hombre. Not by a long shot. This is a supercharged L99-powered, 400-hp ZL1-badged widebody Camaro that will soon feature prominently in a DreamWorks 3D comedy called Turbo.

When Chevy launched its Sonic hatchback and sedan with the 1.4-liter turbocharged four-cylinder engine last year, it made one potential marketing error: the car was only available with a six-speed ...

GM 8.3L Duramax V8 Turbo Diesel Allegedly Under Development With ... means 400 ponies and 1,075 ... which is a completely different automatic from the Allison 1000 five-speed transmission.

The rich architecture of the Turbo-Hydramatic 400 transmission demonstrates why GM spent a lot of time developing this automatic to begin with. The Turbo 400’s hard parts can withstand ...