How Much Can Heads Improve Compression???

...We will be picking the cam later after we figure out which heads we are going to use. I do have some "mild" street cams that may be ok. I don't want anything too big if I don't have enough compression to back it up.... I'm thinking around 268° duration range.

Then I have to mock it up and check the piston to valve clearance....

Then assemble the engine and drop it in... :burnout:

I had to reread this because I knew you mentioned a goal of not buying anything...what all cams do you have available? Maybe something similar to a comp high energy or are you talking about custom grinds from engines past built? Now knowing you're not likely to get your SCR goal, I agree with the above statement though.