High compression with aluminum heads and pump gas???????

How does he know nothing, i told him i wanted a strong street car to run on pump gas, and he suggested to stay around 10:1 comp, maybe he was just being on the conservative side, he suggested to shoot for 10:1 comp and not run a higher amount of comp

He is a reputable engine builder and builds engines for people all over the country, also has built a couple engines for baja racers

I guess what made him originally say that is i was going to use iron heads but they failed the leakdown test and leaked between the valve seat and head, so had to go the aluminum route