Originally Posted by Blazin72
More importantly, how much compression do you have? What are the combustion chambers like in the heads?
This is the correct question to be asking. It's compression ratio that determines the octane you need to run more than cam timing. I ran that same cam in my pro-street 41 but I also had 9.5 compression. I used regular gas and threw in half a can of octane boost every in every tank, although I probably didn't need it. Never had any pinging that way though.