Sitting here contemplating my winter engine build and I thought I would try to get some input. I have a set of 915 heads and was wondering about how much compression I could run on pump gas? What I have gleaned from reading about quench, is that it reduces the tendency to detonate with higher compression ratios and that somewhere around .039 to .049 is the ideal range. If I use a flat top piston at zero deck and my closed chambered heads with a .040 head gasket, I end up with approximately 11.28:1 for my compression number. Will this work with 92 octane pump gas or will I need to run an additive or racing gas? I'm hoping to be able to use my heads since they have been mildly ported and completely gone through. Am I just wishful thinking? Do I need to save my money and buy a set of Stealths?
