Here is an example of a GMC casting date. This one is from the head on my 228, but looks similar to those you would find on your 302 GMC heads and blocks. You can see the "screw head" at the right end of the date code. F162 decodes as June 16, 1952. '52 because this manifold wasn't made in '42
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Last edited by Bill Hanlon; 03/21/2026 9:37 PM.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.