RE: Re: RE: Did a little hauling EGT Results
180 is cool for a diesel and I don't feel that 1200 on the pyro is alarming either. My new Mack Granite will get up to 1400 on a long hard pull grossed at 70k, still in the green on the pyro. If you are concerned about the temp check the coolant with a mechanical thermometer, the coolant and not the radiator to obtain a true reading. The omly problem that I feel you have is with the larger tires. The truck was designed to run 1100x20 tires and the big skins have affected the powerband by numerically raising the axle ratio. Remember these trucks are really a trade off, built to run at 45-50 on the street while having the ability to traverse rough terrain. Even though the first 5T had 1400x20 singles it was gasoline powered and had a wider powerband.