Originally Posted by
jhornsby3
My dad has a 2001 1/2 ton extended cab with the gasser and a long bed. That thing gets awsome mileage. I used it a few times. I'd fill the tank with plus and it would get right at 24mpg in the cascades going from Salem to Bend. A few good hills to climb.
If I didn't pull the heavier loads then I would have looked for something closer to that.
What engine did it have in it and at what speed was you driving to get the fuel mileage?
1990 ¾ ton 4x4 Chevy Suburban
-Cummins Diesel - 12 valve - factory rebuilt
-6 speed bullet proof manual transmission - NV5600
-Gear Vendors Overdrive
-Upgraded Holset HX-35 turbo
-NP205 iron transfer case
-3.73 gears
1982 ½ ton Chevy Suburban
-6.2L diesel - high nickle crack free 1982 block
-Stans headers
-Ported heads
-Timing gear
-4 speed automatic
-3.08 gears
-30 mpg on freeway