Last year for 216 cu.in. babbit bearing type engine. Hood side emblem change to large 3100, 3600, 3800, etc...only. No CHEVROLET emblem on side. Door post ID plate is now blue & silver. Prior years were black & silver. Last year that wood blocks are used under bed. Serial #'s, H 1/2 ton, J 3/4 ton, L 1 ton, etc...