OEM GSR Cam's will not make power above 8100 rpm's, anything higher is just putting unnecessary stress on your motor. Set the rev limiter wherever power drops off on your dyno chart.
I would say upgrade your cam's next but that's going to be kind of pointless with your low CR. As is, your motor is perfect for a turbo. Why did you go with lower compression for an NA build?
Originally Posted by
Fuse
zex (comp cams) duel valve springs and steel retainers(no valve float)
stock GSR cams(no high lift)
forged H beam rods w/ arp 220,000 psi rod bolts(stronger)
Thy will help, 8500 is all I would take it but its your engine.
Horse power drops off at high rpms du to the coil can not re charge and the injectors can only open so fast (you run lean). I would take it to a dyno and see what happens. At high rpms is wean bigger injectors, higher fuel pressure, distributor less ignition and a professional tune come into play do you have any of these things? What computer are you using? Thy all have different rev. limiters.
JE 9.2-1 forged pistons (thats with a type r head i think my compression is around 9.5-1 to 10-1)
What is your valve to piston clearance???
http://www.c-speedracing.com/howto/claymotor/clay.php
This is a big factor in rev
All tunable ECU's have an adjustable Rev Limiter & The OEM Distributor has been proven in cars with over 450 whp.
I think it's a little late to be telling this guy to clay his motor for clearances, obviously he's already been driving it. And stock cam's will not give him a problem.
The coil has nothing to do with your injectors.
Your post doesn't make much sense, the only correct thing I can decipher out of that is: Get it tuned!