AHHHH that is a good point on recalibration.
Fresh rebuilt NON HO 4L (not even close to a HO power), 4:56's, AW4, 33" Swampers, 2100 rpm's @ 65 mph, recalibrated speddo, and a lousy 13-15mpg. Single digits in 4WD. Thankfully it's a trail rig. :rof:
BTW.....is this thread ever going to die...