Ok from the above title thats whats going on my car, but i have a couple ?s, like how big will i be able to go with a custom grind cam and also will the new diamond 4.030 bore -10 valve relief pistons work with these heads. Im trying to build a 11:5.1 comression nitrous motor with these heads and was wondering if these will work after seeing other threads about these heads. I know i will have to flycut and maybe mill the heads, thats no big deal i dont care.

 

Get those heads ported, specifically on the exhaust side.

 

The machinest i am using is going to port them, he said he could easly get them to flow 350.