Quote Originally Posted by WESTERNAERO View Post
Chris Alston's web site used to have a nice little write up on the strength increase of gun drilled shafts. I don't know if it's still there I haven't been on his site in years but it is a very strait forward easy to understand read.
i agree that the gun drilled is stronger i don't know why but in my car i had summer brothers solid axles with 33 splines i broke one , than broke another , went back to the vendor really upset they traded me for a gun drilled axle i haven't broke that one yet and its been years...