Quote:

Quote:

... Where you run into limitations is a proportionally huge port (like a Cleveland Boss 302) on a small displacement motor, it's hard to avoid a peaky (light switch) type torque and power curve with that type scenario. you effectively kill as much duration as you can to try to give it some "passable" bottom end....and (like ford) you gear the wee out of it (4.33 gears, etc).


That's along the lines of what I was going to add to my original post about how even a "good" head still needs to have enough cubes & compression under it to make the combination effective.

It's another example of a poor parts combination that looks cool on paper, but doesn't pan out in the real world.

Nothing worse than a great flowing head(300cfm?) that makes 425hp because it's got a tiny cam and other restrictions. My crude rule is if you don't make 2hp per CFM(in a street engine) something is off. Maybe I'm off but that's my street engine yardstick.