new track time n/a

[84gt347]

Originally posted by blue oval 50h
Well, what are you shifting the car at? Ive been hearing alot of stuff about the XE camshafts making alot of valve float due to the fast ramps and the valve springs cannot keep up.
Pat

I will have to agree on the valve float deal. I shift at about 6000. It will rev to 6250, but i feel the beginnings of float there. I am changing to an xr series solid roller cam and changing from 185cc heads to 205 cc. My pistons are flat top, and a victor jr manifold. 750 dbl pumper. The only spacer is the 1/2 inch nos plate. I think the solid cam will help.. At times, on the nitrous, I hit valve float before the rev limiter, which is at 7000. I really thought i'd see 6500 pretty regularly out of that cam.