Originally posted by OldSchool37:
I have a GMC 6 cylinder engine from the 1950's? The engine is complete with starter, generator, and ignition. How can one tell if the engine came from a 6 volt or 12 volt truck? Thanks
In addition to those methods mentioned above, you can read the build date on the head casting, 6 volt engines ended around '55, but that's not entirely cast in stone. The generator, if Delco, will have a red oval tag if 12 volt. There are very few solenoid starter 6 volt GMC engines (228-302) out there, but they are out there. Flywheel ring gear is 139 teeth if 6 volt, or 168 teeth if 12 volt.
