This video came up on my youtube suggestions thought it would fit here.
They weren't happy with 9.1:1 cr (140 cranking psi) results with the cam they had so they bump it up to 9.88:1 and advanced the cam (170 cranking psi). The results (At 4:22) average gains at peaks 9 hp and 16 lbs-ft it's an ok gain but not the end of the world at the original 9.1:1/140 psi.