Just got a 350 crate GM10067353 was not looking for a motor but it found me. The heads on it are 1.940 int and 1.50 ext. and 76cc non vortex. I have a new set of World S/R Torquer 67S part# 042660B heads. Bigger valves and smaller combustion chamber. I may also be useing a Comp.cam simular to a Chev 327/350HP hydrolic.
Will it work or will I need premium Gas?