compression check ?

My old 360 had KB107's and the compression ratio figured out to be 9.85 to 1 and with a cam that had 232 @ .050" and .513 lift had 148-155 psi cranking compression. Without knowing the exact compression ratio and cam lobe seperation I can only guess and say it should be approx. 150-160. The big issue I see with yours is the varience. 20 psi from the lowest to the highest isn't good. Did you test it with the engine warmed up, all the spark plugs removed and the carb blocked open? If not that could drastically affect the readings.