Free cam build...

I have the 4:56 gears on the shelf and don’t care if I have to run a 4500 stall as the car will never go too far from home…( unless I do Drag Week again ) I would like it to run on pump gas so 12:1 may be pushing it…but by run on pump gas I mean as long as it can drive to the burger stand on pump gas that’s good enough…if I take it to the track I have no problem running race gas when I beat on it…

I’m going to stop at the machine shop this week and talk about heads…should I go with off the shelf or order bare and have them install larger valves…

Anyone want to do one of those cam timing cylinder pressure calculations for me to see what I should shoot for as far as compression?


I'm pretty sure 12:1 on pump gas is doable. You just need to account for it.