Okay, Gord,

This is what I can find for numbers. What says what?

GM - Oldsmobile engine?
Casting # Top of engine, left side of head cover 3886348 GM7
Right side, rear of the block, behind starter 3753365
Stamped behind timing shaft hole W162997 then 2917C

Last edited by Biermann; 06/21/2025 6:13 PM. Reason: Additions
~ NORTH OF 49TH
1948 GMC Model 9434 Frame rebuild
1953 Chevrolet 1314 1/2 ton rebuild
Follow along it the DITY Bay