273 Compression Test Results

hmmm, might have to try that on mine someday - thanks! Since the 273 doesn't have the hardened seats, I could see that happening. Wonder how much power you would lose
if you just bolted on some good newer 318 heads with the hardened seats? Only thing I hate is that you can't buy 273 head gaskets, have to use 318 which ar bigger so will loose some compression.