During these years, GMC's claim-to-fame motor was their V-6. In fact, from 1960 through 1964 this is the only engine they offered in their vehicles. The emblem on each side of the hood showed the world the truck had the V-6. A strong large cast-iron block had a two-barrel Stromberg carburetor. The spark plugs in the head were above the exhaust manifold, quite different than the Chevrolet V-8 design (even today) with the plugs below their manifold.
In 1965, GMC began to also offer an inline 6-cylinder, which was the first time ever that GMC and Chevrolet shared motors. It was actually the great little 250 6-cylinder that Chevrolet introduced earlier in 1963. As their base motor, it had a lower price point, provided better gas mileage, and required less expense when repairs were needed.
GMC held strong to this V-6 motor design. It was offered through 1969, even after they began also using the Chevy V-8 in 1967. The V-6 emblems were not displayed at the end of their 1966 body style.
1960-62
1963-66
