360 coming back together

The cfm/hp ratio is a VERY loose guide. Using the 220cfm at .600 rating, your max hp "should be 440hp. Except, a larger cam and rpms can push it beyond that. Like these guys are saying, it's the flow in teh lift range of your cam that matters. If they are close to 200cfm at .500, and (guestimate) 175 @ .400, then your hp "should" be around 350, assuming all else is working at an average level. Meaning you're not running a huge carb, or an oversize intake, or a 2bbl carb and intake, factory manifolds, etc. It's really a very loose guide. To get an average A body to 14-105mph you willneed about 340 crankshaft hp, so you're pretty close to your goal.