Octane to run

[gixxerfreak01]

I have a thermal coated JE 13:1 piston, hotcam stage 2 what octance should I run pure race, pump gas, 50/50 mix.

[BlaineKaiser450]

i would run 50/50 but im not an expert on race gas and how it affects the engine but thats what ive heard works well

[JJs450r]

ive tried to run 50/50 and i have the same set up as you and it seem to pop more with 50/50 i tried 75/25 and 100% of sunoco 110 and it seems to run better but dunno could be different areas and temperatures