Originally Posted by sledpuller2006
well sorry i dissagree. i have an 02 with 4.10 and our pulling truck has 4.10... ahggg. the sweet spot for milageis 1800-2100 rpm cummins really doesnt make power after that , even my pullin truck the dyno chart starts to fall rapidly after that... but wheel speed is the key aso there.. they make the torque i as 3.73 or even heck 3.42 thats trully what im thinking in throwing in the 02 i drive dayly. DO NOT GO WITH 4.10 u will lose 3 to 4 mpg. Sorry if i pissed anyone off but its FACT!!!!!!!
Sorry but I disagree with your disagreement. Sweet spot for mileage is under 1900 all day long. And they do not lose any power after that, in fact their monster power is just after 2200 RPM. If your trucks power falls on a dyno after that, something is definitely wrong.
Good choice in going with the higher (numerically) gears. Those 3:73 are a decent mid-level gear, but I wish 3:90's would be an option. Would have been great for my 40' 18K toy hauler.
Side note: My RPM is 1900 @ 70 MPH with my 265/70-17's. If I drove the speed limit AND towed at the same time, I would never be able to leave 3rd gear. (48RE)