1950 was the year GMC Heavy Duty Trucks, introduced the new style Cabs. Along with the new cabs, came the new engines. 318, 360, 426, 503, and 707. Before 1950, the Heavy Duty gas engine group, consisted, of these engines. 308, 361, 451, and 477.
Spanky Hardy Collector Of Fine Old G.M. COE Trucks & Antique Holmes Wreckers
