318 upgrades

Believe me, I'm not saying the Summit cam is bad, they are a big improvement over stock and that one is designed to work with the stock springs.

The Mopar cam has a smaller adv dur than the Summit cam but has a much better at .050". This cam is designed with our short stroke's need to fill early. It's also real fat on the exhaust side to make our heads work! it needs the springs to keep it in check.
The Purple shaft has a wider and higher operating range, too.


P4452782
Advertised Duration268 int./276 exh.
Duration at 050 inch Lift228 int./235 exh
idle-5800

SUM-K6901
Advertised Duration276 int./286 exh
Duration at 050 inch Lift218 int./228 exh
2000-4500 rpm