TH400

I have a 1981 Chevy C30 dually truck with a 454 big block and a 3.73:1 rear gear. I’d like to remove the TH400 and replace it with a 4L80E. […]

So, you’ve got your Turbo-Hydramatic 400 transmission installed, and the shifter adjusted spot-on perfectly. Now, ever wonder what’s actually going on in your transmission when you shift? Well, the transmission […]

Putting a transmission behind a high-power street/strip car, hot rod, or mud truck can be a tricky proposition, because there are a ton of parts that need to play nice […]

I have a 5.7 LT1 from a ‘94 Trans Am I want to mate it to a ‘79 TH400 transmission. What flexplate do I need? This has been a very […]

I have a TH400 trans that I just bought to replace the ailing TH350 in my ’70 big-block Camaro. A friend told me that there’s a special way to set […]