pinion depth, how close does it have to be

65TerrorCuda said
I wedged a prybar between the ring gear and 3rd member and leaned on it a bit. Most important was not to use too much of that marking compound. It's a bit tricky

Just finished the break in period, works great. Still need to do a full throttle hit. Definitely gunna be a spill the beer moment, 3.91 feels crazy compared to 3.23

Yeah I love some low gears. I ran a 3.91 in Vixen for a short time. It was a real hoot, but with just 13" tires it really spun the engine at highway speed so I put the 3.23s back in. That's ok though, cause the 4.11s and T5 five speed and taller 14" tires are in the works. lol