Alright, I've done searching, and can't quite find what I'm lookin for. I'm wanting to put an HSR on my '89 Iroc. Now it is completely stock other than a flowmaster. I'm just curious as to what RPM the stock heads and cam will pull too? The TPI setup is only good for a max of about 5000RPM(which we all know). And if you'll look in the new issue of GM High Tech, you'll see part 2 of the HSR build up on an '86 Iroc and they pulled to 7000RPM! Now obviously I'm not going to pull that far, but, where are some of you guys shifting your stock motors with these intakes? I know it's alot of test and tune at the track. I was just wondering if anyone has been down this road and can give me an idea of where to start. Any input is appreciated.

 

Let's not all reply at once. J/k. C'mon noone has done this before?