Originally Posted by rskrause

We have an HR cam in my friends SC Mustang that turns 7,5000rpm no problem.

Rich

Originally Posted by HardcoreRM125

Whats the limit on the stock PCM, 7200 right ???

Originally Posted by 96vortechSS

Due to my turbo manifolds I have to run short valve covers. My heads flow 317cfm at .700 lift and heads are setup with .650 lift springs. I'd like to run the highest lift I can possibly run with short valve covers. One cam I'm looking at is .630 lift with 1.5 rocker arms. The other is .619 lift with 1.6 rocker arm. I'm thinking if I run a larger cam an shorter ratio rocker arm I can get away with more lift. Is that right?

Originally Posted by SS RRR

I am running a cam with .650 lift, 1.6 Crane Golds using LT4 composite valve covers. After spinning the engine several times there is no interference.