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I have a 2002 f-250 v-10 that has a 4 inch lift with 315 BFG AT's
I also have the stock 3.73 rear end. I have some loss of power while towing (7000lbs) trailer.
I'm looking in to a 2004 f-250 6.0 and I plan on doing the same lift and tire set up. Will this set up be any problem for the 6.0?
Thanks
IMO if you are happy with your current truck but want more grunt for towing, I would consider a gear swap from a 3.73 to a 4.10 or maybe even a 4.56. Changing gears will help compensate for the lift and tires and return your power close to or better than stock. Just my $0.02 - hope it helps.
Do not just look at it as a "take off" problem. Remember that, yes the diesel will eventually overcome the resistance of larger tires and gain momentum but....the tranny is working much much much harder than necessary. 37's and above go 4.56's. 35's and below 4.10's. I have the 6liter with 37's and 4.56's. It is better than stock. It revs a little high unloaded (2650 @ 80mph) but when I put a load on it (gettin' a bigger boat soon) it will be perfect.
Joe, Are you saying that your rpm's will change at a given speed with different loads on the truck? I'm not sure I understand how that would happen? If your running 2650 @80mph then you should be the same rpm with 5000# behind you. If I'm missing something please explain.
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