Pump gas compression

Well said Skews.

6pkScamp, tell us about what type of combo you are wanting to run.

I myself have run a set of KB-107's @ 0 deck with 72cc J heads and Edelbrock heads @ 63cc. Cams have never been smaller than 244*@.050 with a 4spd manual & 4.10's. no pump gas problems at all. So depending on the head flow, the J's being the worst, I could still get into the 12's easy enough. It makes for a great street car.