Quote Originally Posted by S19243H
why do i need more compression to run a bigger cam? im trying to understand.
if i have a 350 with a magnum 280 that runs good what happens if i put the same cam in a 305? of course the 305 would have less hp,but would it run right? or would there not be enough compression because the valves would be opening further?
The larger cam will not increase your compression it will actually tend to blow more of it out the exhaust.
To understand all this do a google search for dynamic compression and static compression.