T444E safe operating RPMs at highway speeds
How many RPMs can I safely run with a T444E on a freeway? My 35' 2000 International RE with a T444E is running around 2500 RPMs at 58 to 60 MPH. What are the safe RPMs for the T444E ? How many RMPs are these engines designed to run at highways speeds? I would like to be able to cruise between 65 and 70 on the freeway. Do I need to have the rear end ratios changed? Or can the T444E handle 3000 RPMs at freeway speeds?