Discussion Starter · #1 ·
1991 GT AOD car I'm going to build a drag and drive unit out of. Looking for 9s all motor SBF bolt pattern auto trans.
Looking for something to hold up to 750hp or so reliably on a budget. I would like to do drag week, rocky mtn race week etc. Car we see minimal use outside of that but does need to be able to cruise 65-70 on the highway.
Car currently has 3.73 geared 8.8. Would be in "street car" classes requiring full interior etc. Some require 3200lb with driver.
Built AOD? Built C4? 4R70?
What would you run? Leaning towards a stout C4.