Originally Posted by second 70
If you're building a decent HP hemi the trac-lock is a lot weaker than a power-lock. If I remember Dr. Diff said it would last @ 400 HP, power lock 600HP, and the S trac I bought from him should handle 1,000 HP.


The Track-lock can handle only 400HP?? If that's the case, why would the factory put it behind a 71 Hemi at 425HP?