360 heads on a LA 318 vs Magnum heads on a LA 318

gagembassett said

Everyone always says "360 heads will kill your compression blah blah blah" but they fail to realize the only factory compression boosting heads for 318s were the 920 heads from 1967 and they well famous 302 heads. 360 heads all the way with a cheater cam (like the Comp 270) to build cylinder pressure and make up for the low compression.

Click to expand...

Don't forget the industrial stuff!
water crossover instead of exhaust crossover so you don't end up with a couple of lower flowing exhaust ports, chambers cc'd at 62cc after a bit of de-shrouding around the valves and stock style valves with the dimples in the face. Aftermarket flat faced valves would get you to about 60cc I reckon. Not bad heads really but port volume was smaller than a standard 675 head.