Inputs on a home built 318 for red light to red light fun

Dan the man said
From what I understand what the op is wanting to do, I think that a 500 - 600 cfm carburetor would be good along with a good dual plane intake. 302 heads with a good comp valve job and back cut the valve's. Cam wise I'd say a 340 or similar cam. Have the block decked so pistons are at zero deck height, good quench will help with detonation. I'm thinking that if he builds as he posted that he will be disappointed. He would need at least a 3500 stall converter for the cam he would need to spin 7500 and now he would have transmission heat problems.

Don't understand why 302 heads, yes if you had a good running 318 add a basic mild cam 4bbl and headers is a no brainer, but doing a full build why strangle the power with 273/318 heads, say your combo good for 300 hp, just swap to 1.88 360 would gain 30-40 hp will no real downside, go Speedmaster or eddy's and another 30-40 hp.

And even if 300hp if fine with better heads you can go smaller on cam the get there.

Yes 600-650 cfm fine, a 500 cfm is on the small side just giving up power for no reason.