Bullet proof GM 12 bolt.

[hotrod 80]

Another important question .... What trans ? Is this a foot brake truck ? Trans brake ? I leave at 4000 of the brake . In a fullsize this would require a substainial rear axle . Footbraking at 2500 would be alot easier on parts

[Wasted Income]

Originally Posted by hotrod 80

Another important question .... What trans ? Is this a foot brake truck ? Trans brake ? I leave at 4000 of the brake . In a fullsize this would require a substainial rear axle . Footbraking at 2500 would be alot easier on parts

If you're asking me, it's a 4L80E, with a 3600 stall, footbrake on the 2 step to build boost, leaving at about 7 psi.

I agree, there are a lot of variables that affect the longevity of a rear axle, with weight and shock load at the go the two biggest.

Mine is heavy, but leaves soft compared to you guys.