Alright, here's my problem. I've got this nice 1967 camaro 327 40over w/ an awesome roller rocker set in it. But its not cranking out the power i want, so i think i want to put in a new more aggressive cam. Im not sure what i sould put in, but ill get to that later. All the websites like ISKY cams, Comp Cams, and Crane Cams rate their cams by the compression. I dont know what the compression is because all the engine work was done before i got the car. Can anyone tell my how to find my compression???