Also, make sure you follow the instructions for which frost plug opening to use. You want to set up convection currents properly. The 235 and 261 use the front frost plug hole under the manifold.

1948 3/4-Ton 5-Window Flatbed Chevrolet

34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.