hey all,
so i have a vorteched ap2, i took it to my tuner and he put in a 9lb pully and raised the redline to 9k, i have 55lb injectors, and an aem, my question is is it safe to run the motor boosted to to 9k on an ap2?, i also put in new valve springs and retainers, for the 9k redline. my tuner is autowave in hb, and i have only heard what a great tuner he is and i trust him. what do you guys think??
thanks all
jonny

 

Are they new OEM ones or aftermarket springs and retainers? With aftermarket(assuming they are stronger than OEM, of course) valve springs and retainers I don't see why not.

 

they are aftermarket, he uses them in his race engines

 

Then I would say yes. Autowave is generally a pretty smart shop from what I've heard. Also taking into account that the springs and retainers are what go bad when over-revving happens, as long as you have stronger ones you should be fine.

Now if you were on a stock head with stock valve springs and retainers then I would definitely not recommend reving to 9k. I don't really see the advantage of reving to 9k though if you only have valve springs and retainers. I would guess you are losing power. You should have just purchased a smaller pulley to run more boost to 8k, that way you keep everything safe and make more power on a smaller curve...

 

he said that i will make 340whp to 8k and 360 whp reving to 9k, he has already tryed it and it made more power to 9k. do you think i have to worry about breaking a rod

 

So your running a 9lb ap2 pulley revving to 9k rpms? So basically its is no longer a 9lb pulley? What kind of numbers did it do?

 

He wouldn't be losing power considering it is a centrifugal blower.

 

360whp on stock exhaust at 9k, i think not bad, you??

 

what dyno?

 

not sure, but when i had my car baslined on a mustang dyno at 290, autowave baselined my car 291, so mabey a mustang dyno