greg_a_morton
Full Access Member
hey david85 what kind of fuel mileage are you getting out of your truck with the OD and 3.08 gears? I am shooting for more mileage at hwy speeds in my truck. I am running a hx30w on my 4bt for low end power and it runs hot at higher rpms with my 4.10s. I am running a gear vendors but gearing is just not there. With my 72 frame it is running a dana 70 and there is no aftermarket gears for it because the gears have a different offset than newer. I have been looking or waiting for a dually or cab chassis sterling rearend. I have looked for 3.08s with no luck but have found a few 3.55rears. There is a aftermarket 3.31 gearset. I am trying to figure out what will help rather than hurt mileage. My engine should be around 400lbs torque and 150hp so I am thinking maybe fuel mileage could be comparable with yours. I am getting 20mpg or so now at 55mph with pump turned up a bit and a 35hp fuel pin(Blows the smoke). I hope to help that with my hx35w after rebuild. Sorry about changing topic a bit!