318 1/8 time improvement

11 to 1 compression probably on race gas as that compression is too much for pump gas IMO. A S/S head is a whole different ball game . Why waste your time on a 318 head when you can run an Edelbrock, Indy , "J " or W style head. If you want to make real power put a stroker kit in it. Thats another question ? what stroke is the 12 second 318 ? Stock ? how many cubic inches is the 318 ? What intake and carb does it run ? Headers ? 904 or 727 ?