[David_Hayward (RIP)]

The Staghound GMC 270 cu in engines were built in the Flint Motor Plant (a Chevrolet one) which assisted the Pontiac, Michigan Motor Plant. It is just possible that the two plants painted engines differently. I have no idea if Buffalo, aka Tonawanda, New York produced GMC engines...it is possible! Same with Olds' Lansing plant.


PS:

To clarify, Walkerville or Windsor Transmission Plant of the Canadian Products Division never assembled 270 engines, but they did 348 units, mid-August 1940 until June 1941 (17,000 or so being built). The 348 was suggested back in the summer of 1939 as a CMP engine, but they were only used in certain GMC and Maple Leaf trucks. The other engine was the Canadian Pontiac 224, and GMC Chevy-based 224 cu in six which was only used in GMCs in the truck version.

Interesting fact: 1941 saw peak Chevrolet six production at 106,935 units! Plus 10,464 GMC 348s!