[George Bongert]

Originally Posted by BobBray

Of course we all know that the GMC V-6 engine family was used in GMC trucks from 1960 to 1974, and Chevy trucks from 1966 to 1974. But, did you know there was another truck manufacturer that used the V-6 for a short time? The truck manufacturer was White Motors, and the offered the 478M in their model C4364 in 1973-74. White had manufactured their own gasoline engines for many years, but in 1972 sold off their Diamond-Reo truck division and with it the plant where White gasoline engines were made. With no 'in house' gasoline engine White used the GMC V-6 and a strange engine known as the 'Giesel', which was a Cummins V-8 diesel converted to run on gasoline.Here is the opertor's manual for a GMC poowered White:

Interesting bit of GMC trivia. Anyone who owns one of these White trucks equipped with the GMC 478M engine has a valuable piece of GMC and White truck history. Thanks for posting!