Big horsepower 318 builds

fishmens67 said
Theory ? Please explain your theory. lol
My theory is, a 318 will have to spin 8K with 280 - 300 cfm head with a 600 lift cam and 11.1 comp to produce 500 hp.

The 318 in this article only spins 6500 rpm to make 477 hp, don't thing you would need another 1500 rpm's to make the last 23 hp.

Iron-Headed Mopar 318 Magnum Engine- Popular Hot Rodding Magazine

But it's a very well put together engine.