my Low dollar 318 hop-up project

Part of that is the 4 brl will always get better mileage than a 2brl...unless its TINY...is because the front primary venturi of the 4 brl is smaller and mixes 'with the higher velocity' fuel better.
Jadaharabi said
My 68 3/4 power wagon with 318, 2 bbl, 4 sp, 4.10 gears and 9.50-16.5 tires pulling a loaded 4 horse trailer got 8 to 10 mpg.
Swapped to a 76 360, 4bbl and gained more pulling power and 2 mpg.

55 mph is my max speed for hauling loaded with animals on the hiway.
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