TPH25ND Posted December 10, 2020 Share Posted December 10, 2020 I'm looking at buying a used Mack with MP8 and Mdrive. Probably a CXU613. I'm looking at doing in state hauling up to 105,000 lbs, but also need the ability to bring a 90,000 lb load out of a soft field. Most used trucks a see are 2.47 and 2.60 axle ratios and 3.08's. I know the 2.47's and 2.60's are no good for what I want. What ratio's would be the best for what I want to do? Is 3.08 adequate or do I need to be at 3.25, 3.58 or more? How about overdrive vs direct transmissions? Most I see are overdrive. The price range I'm looking at, doesn't allow me to look at the 13 or 14 gear mdrives, just the 12 speeds. Any advice would be appreciated. Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.