I run a 360 in my heep. can anyone tell me what the max. running down the freeway RPM should be? I have 5.89 gears and 38" tires and i don't want to screw up a great engine. TIA, john

3000-3500rpm. that would put ya between 60-65. 3368 rpm is 65 with the 38s and 5.86 gears.:D did ya get a tach in that thing yet?