Cast Iron Heads.
Sea Elevation.
I think Im gonna play it safe and stay around 9:1
On an engine like this which should be putting around 500 hp (small block stroker with w2 heads). Each point increase in compression would equate to how much HP gains? Lets say if the engine made 500hp at 9:1 if it was bumped to 10:1 and race gas was used so it doesnt ping....how much HP would be gained from the full point increase in compression?
There was a test on a 440 stacking gaskets to controle cr and from 9 to 1 to 10 to 1 gained 20 hp so maybe you would get 15hp.
