["QUICK-SILVER"]

Originally Posted by Shockwave78

What would the shorter seat duration on the Comp cam help with?

Intake valves close ABDC (after bottom dead center). Earlier intake valve closing lets the engine build more compression.

Clay

[Shockwave78]

Originally Posted by "QUICK-SILVER"

Intake valves close ABDC (after bottom dead center). Earlier intake valve closing lets the engine build more compression.

Clay

That makes sense, its a lot simpler than I was expecting. Is the base circle of aftermarket cams larger to allow for greater duration and lift? Im trying to think of all the reasons that the valves would stay open.