Possible cam install
Sorry, LOL, .0015 shaved? I think you better sit back and do some math on what it will take to get the 360 head cc down to the 318's head cc and think about if that is enuff compresion right there to run the cam and get what you want out of the engine as it is.
(P.S. the advertised ratio for the 318 floats between 8.0-1 and 9.0-1. While in reality, my 318 speced in (Measured myself) at a lowly 7.8-1.)