Let's Build a 416 with Cast Iron Heads and Manifolds

B3422w5 said
look at even the old IHRA 900 inch mountain motors. They were, if memory serves, about 3 tenths quicker than a 500 non mountain motor deal. I think both shared the same head, didn’t they :realcrazy: crazy….

Were they same/similar bore size?

I'm guessing the 500 has a higher rpm powerband doubt it's 80% higher to make up the 80% cid difference?

B3422w5 said
I think a big reason a typical Mopar small block stroker only picks up roughly 3 or maybe a bit more all things being the same type deal is because the heads used most of the time become a more noticeable liability on the extra inches.

But with bigger heads the 360 should also be able to turn the 13% more rpms over the 408 (@ same tq:cid ratio) to make up the 13% cid difference. Obviously there's gonna be an rpm ceiling at some point.