black1999z28

MODs are in the sig and on top of MS4 I have the PRC springs that are good to 660 lift.

3fourty6

iTrader: (2)

I was doing 7K last year on a totally stock bottom end. Think I'm going to bump it down to 6800 to be a tad safer. It makes great power all the way up there but with stock heads you might be more limited up top.

sunsetorang01TA

6800 would be nice for an ms4. I use to have my 228 at 6800 (what an idiot i was). Ya learn though haha

00nbmz28

iTrader: (11)

i have a ms4 and i shift at 6800

macca_779

I rev my 220/220 out to 6800 for best performance. Your cam would be a 7000rpm sitter for sure.

Slowhawk

iTrader: (12)

Best way is to dyno it and go by the hp/tq curve.

DaveX

I wouldn't push the factory bottom end past 6500 or so, but that's just me.

DUDER02SS

Best way to tell is look at your dyno graph and see what RPMs it is at when it quits making power...I have a cam similar to the MS4 and I made power to just over 6800, I set my shift light at 6500 so by the time I actually shift the car would be right at its limit of 6800...