Rich at DEBOSS Garage uses his ’67 Pontiac GTO project as an excuse to go over how to build a high-performance Turbo Hydramatic 350 (TH350) or Turbo Hydramatic 400 (TH400) transmission…
How To Build a High Performance TH350/TH400 Transmission
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Technical Info
Racing your 700R4/4L60E? Start with these Basic Upgrades
You want to race your 700R4/4L60E transmission, here are the minimum upgrades to help your driveline stay in one piece at the race track. [More…]
Technical Info
Speed Potential Calculator for Ring Gear and Pinion Changes
Calculate potential speed based on the RPM of the engine, ring gear/pinion gear ratio, final transmission gear ratio, and tire diameter… [More…]
How To & DIY
Slap Shift Side Detent Shifter for GM TH200, TH250, TH350, and TH400
This Side Detent Shifter is perfect for your GM Turbo-Hydramatic-equipped project and mounts solidly to your transmission tunnel. [More…]