Beautiful truck!
I went with the 4.10 pumpkin for my '48. 45 MPH is fine with me although I could go faster. I get 13-14 MPG with my 235/85 R16 tires. If you go with modern rims and radials, you'll have to solve the ol' rim-rubbing-on-the-tie-rod-end problem.
You don't want to go faster than your old drum brakes can handle. Anybody remember or still get the helpless feeling when your drum brakes faded to nothing in a stop from high speed?
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.
