Hey Chad, pm sideways on here. He was running a Alaniz head with stock bottem for a while reving to 9500ish if I remember correctly. That was on a blower though. I think John Z was pushing his stock block pretty high as well. Again on a blower though.

Martin

 

Yes, as the thread title states, its a fully built head and its an ap1 with 13,500 original miles.

 

i have the same set up ur describing but im on an ap2, fully built super tech head with stock block(well 3mm hg) and i only raised my redline 200 rpms, but i wanna push it up a little higher after the winter, so i guess im hijacking a little asking what an ap2 could rev to with this set up?

 

No problem on the hijack man. lol It'll be nice to find out on both blocks.

 

there were a few threads about this before. i think the safe limit on an ap2 motor is 8600

 

I think that may apply to a stock AP2 motor and stock valvetrain but I could be wrong.

 

What are you wanting the extra rpm for? You can go up to 10k but as its been said, you will not be making any more power there and torque by that time will be falling hard. Are you wanting to extend the band because of gearing issues you want to battle? What is the Piston speed of a Ap2 engine @ 9000 rpm vs a AP1 engine @ 10,000?

 

I am wanting to rev it to as high as it can safely go and still b making power to give a little more speed in each gear as you stated. I won't rev it past where power starts to fall off and that's just nonsense to do that.

 

I guess we will just run it up on the dyno and see where power starts to fall off. I was just hoping to find out what is safe for the stock ap1 block. I don't want to rev it to 9700 rpm if that's where the power starts to fall off if its not good to rev the stock ap1 block past 9500. You know what I'm saying?

 

Stroke is 84mm for an AP1, that was the basis for the check your numbers comment I made earlier in the thread.