Originally Posted By fast68plymouth
Originally Posted By Wookie316
Springs hold to 7000. Drops off bad at 7200


Fast rate cam, 1.6 rockers........ I'm going with valve float. When those things are "done", it's like flipping a switch.
I don't know if you were measuring air flow, but if you were, you'd see it there if that's what it was.

I have to agree. Although we may disagree on the cause, when the power suddenly drops, the valvetrain is unstable, and needs attention.

Mike Beachel

I didn't write the rules of math nor create the laws of physics, I am just bound by them.