Compression Pump Gas???
#3
I think there will be a lot of variables that affect your max compression. I run 10.8:1 (actual measured) compression on 93 no problem. SBC with AFR heads, RPM Air Gap and Mighty Demon carb. The timing curve is real aggressive...20 initial, 18 mechanical all in by 2800RPM. With vacuum advance, I idle at 52* advance. I have the stock third gen cooling setup with dual electric fans.