Might be a GMC engine. 2194819 Is one of their cylinder head numbers used on the 248 and 270 engines. The engine size should be on the left of the distributor on the flat surface if it is a GMC engine.

Joe

Last edited by gmc-is-me; 02/22/2023 1:57 AM. Reason: additional info
just retired and finally making headway on my project truck. 1940 GMC AC152.