I have an A-code 289 and I ran a compression test on it before removing it from my '66 fastback. Cylinders 1-4 were around 110-125 psi whereas cylinders 5-8 were about 10-15 psi higher on average. There was not much variation from cylinder to cylinder so I was wondering whether the difference may be due to improper torque or a worn head gasket on the right head. The engine runs good and I was thinking of just cleaning it up, putting on new gaskets, and sticking it back in... Any suggestions? Thanks!