low compression

go with what im doing, a 500 cube stroker, 440 block, indy heads, intake, quick fuel carb, should make around 570 with 10.75 to 1 compression, it all matters on the cam, used to know someone who always said, " cams make the engine, not the engine makes the cam" crazy i know but the man was a genius with a 413 max wedge

With those heads and intake, I think you'll get more, a lot more. With that combination you could run a hydraulic flat tappet cam as small as 236/244 @ .050, .568"/.568" lift and get that power. We did 566 HP with Edelbrock RPM heads, Edelbrock RPM manifold, 10.3:1, and the hydraulic flat tappet.

Your motor is going to be a brute on pump gas.