The Stovebolt Site Forums The Shop Area Driveline Will a tri-5 pass rear end work in a 1/2 AD truck?

The standard ratio is 3.90, with a 3.38 (Hydramatic) and 4.10 (usually w/overdrive) as options. The 3.90 is the most common, and the 3.38 is the olny gear available as anew replcaement. The 3.90 will work perfect with the overdrive. You will need to weld up the axle pivots, but otherwise, it's a drop in.