RE: Miles per gallon- What are you getting?
6-8 in town if I rod the snot out of it, 8-10 if not, 10-12 highway. 12 if I cruise at about 60 (doesn't happen much).
360, a727, 4.10s, 35x12.50s, cam, carb, intake, headers, 3" out. No cats from the factory.
Better mileage? higher air pressure in the tires, softer foot pressure on the gas.