Help identify my engine ?
From what I found, 3914678 could have been a 302, 327, or 350 all from 1968, as shown here.
Now the pad stamp...
V0703HN looks to be Flint plant, July 3 date, and HN looks like only one possibility in '68...
Partial VIN looks like 18F24564... so 1-Chevy, 8-1968, F-Flint(Chevy).
So Am I correct in figuring it must have originally been from a 1968 Chevy truck ?
You did good research.

















