I have an 84 Z28 that I use for autocross in the local CAM class. It has a warmed over 350 mated to a T5 trans. I'm curious as to the durability of the T4 trans compared to a T5. Any advantage there ? Always looking for a low buck mod that has been overlooked. Thanks for any insight.

 

T4 is exactly the same transmission as the T5 except without 5th gear. I've built several T5s from T4s.

 

Thanks for the response. Looks like at some point I may have to part with some green if I want a stronger trans.

 

T56 and never look back bud