I might have missed the answer but what kind of tires do you have? Old bias plys? Radials?
When I ran the bias ply tires, my '48 would "hunt" all over the place, sometimes real abruptly.. When I put on radials, I could finally take a cup of coffee when I drove to work.
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.
