effect on mileage-gear change?
I have a 1979 CJ-7 with a 304-V8, and I am running KM2s which is a 35" on a 16" wheel, body lift 2", suspension lift 4" -- with standard gears right now. I am happy with the 9 mpg or so I get but ask:
If I have my shop change out the gears, how does this affect mileage, if at all? I think I understand that the engine runs at low rpms when you are running a larger tire and was just curious if there is a big change when you change gears which as I understand it will get the jeep back to his normal factory power after a gear swap to account for the larger tires.