Have an 69 corvette with the original numbers 350, 350hp 4-speed with air conditioned convertible. Motor was rebuilt by previous owner about 4000 miles ago. Everything still stoke intake, Quadrajet, Exhaust manifolds, just like it came from G.M. I don't think she runs as strong as she should for an 11 to one compression 350 so pulled timing cover to check cam, it's installed at 113 centerline with 170 cranking compression. My choice is either advance cam 8* or change cam to one of lunati's voodo cams either the 102 or 103. I believe the cam is the original Gm.