George V

I have a stock 02 bottom end LS1. I will be installing GMPP (65cc now) heads with stock gaskets and would like a CR of 11:1. What should the CC of the heads be? I figured 62cc by using a proportion, but the calculator is giving me a different figure.

I will also be installing a comp 222/224 .566/.568 on a 112.

1. What should the pushrod length be?
2. Any concerns with PV clearance with this set up?
3. Is 11:1 CR too high

SideStep

If all you want to change is the chamber size to get to your goal 11:1, 62cc will get you 10.95:1... assuming you are .007 out of the hole and you are using the factory composite gasket.

George V

Thanks, then to get to 62cc from the out of the box 65cc, how much will need to be taken off the heads?

Gunnar@Patriot

iTrader: (20)

approx. .018"-.020".

George V

Thanks Gunnar

What would the pushrod length be with a cam that has a base circle of 1.49