If you're a believer in the axiom "performance is automatic " and own a General Motors product, your faith will be subjected to the acid crucible of reality with GM's Turbo-Hydramatic 350 (TH350 ...

It turns out the Turbo 350 (TH-350) measures the same length overall as the 200, so it's practically a bolt-in. Either an early TH-350 with Chevy-only bolt pattern or the late models with a ...

TPI's Turbo 350 has much shorter gearing than the Powerglide. And adding the extra gear will give the car more momentum off the line that will carry all the way through the entire powerband. The ...

For comparison, the Turbo 350's First- and Second-gear ratios are 2.52:1 and 1.52:1. With a better First-gear ratio and an Overdrive, it's like having your cake and eating it too.