compression ratio on pump gas

Fst73, IDK if the OE poster is going to run a cam that big. Being that a big cam will help ......

True. Was just saying that bigger cam can help depending on compression. If he wants to be sure of running 89-91 Xe274 with magnum heads and 10.7 compression with kb107 worked great for me and many others!

plus I think my Abdc is 53.5 to make 8.8-8.9.


Dont worry about being confused. I learned by reading and bugging all of these guys!