Could it be possible in the past the orfice was drilled in the block to the top end and that’s why it’s over oiling. My 59 235 is working very well now that I have the proper rockers on it. No oil in exhaust and the plugs look good. There was just too much oil in the valve train and the valve guides and intake seals could not handle it. My engine has a fresh bore job with new pistons, rings, and reground crank, along with a completely rebuilt head. It should not have smoked but it did untill the valve train was corrected.

Last edited by lumbersawyer; 10/09/2023 12:26 AM.

1947 3600 Chevy