If you mean on the outside of the snout that goes into the engine, that's wear from where the timing covers seal runs. Get a speedi-sleeve to repair that. I think they're available from RockAuto (you'll need the engine and probably what it came from to get the right size.)
Last edited by klhansen; 09/20/20238:47 PM. Reason: added pic
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
