The profile of a Marine cam is very similar to a truck grind, as the engine is designed to peak out at about 4600 rpms. You will want to change the cam to a better profile to bring the rpms up somewhat.

I am also going to use a '99 Vortec in my new project, a marine version, too. So I plan on using a hotter roller cam in it.

If you don't, your car will sound and run like a boat.


Don