Quote Originally Posted by RedHeartbeat View Post
no way with that cam. You need some springs good for up to .620" lift. Double check the new revised 918s, they take more lift than the earlier ones ansd they're still the beehive design.

BTW, thats about the same cam I run and I drive it on the highway all the time with a 3500 stall. Just made a 630 mile round trip to SanAntonio Friday with mine.
You're also running a 408 stroker setup right? You've got 83 more cubes than us 5.3L guys.