I found a Federal Mogul SBC rebuild kit from www.spdc2000.com part no. MKF630C. It looks pretty decent for what I need. It says with 76cc combustion chambers it would give me a compression ratio of 8.6:1. I was told an 11:1 ratio would be good for me. I plan on using GM L31 Vortec heads, with a vortec intake manifold and a holley 750 carb. What would be good cam dimensions to get me close to this CR?