- Joined
- Jun 9, 2012
- Messages
- 1,323
- Reaction score
- 8
- Location
- oklahoma
- My Car
- 1973 mustang sportsroof - 351c 2v - fmx trans.
Hello folks, I am currently putting a 302 together for my wifes mustang. The engine block is an 84 casting that had e5te cylinder heads with 69 cc combustion chambers making a whopping 8.4 to 1 compression. The e5's are going in the scrap pile and I am installing GT40P heads with the appropriate longtube headers. The GT40P heads have 58 cc chambers. Does anyone know how much of a jump in compression this will produce? Thanks everyone.