Posted by PretendFarmer on February 25, 2014 at 10:13:16 from (192.249.47.207):
In Reply to: 3.73 or 4.10 posted by The tractor vet on February 25, 2014 at 09:11:56:
The tractor vet said: (quoted from post at 18:11:56 02/25/14) Well thats great . BUT i can not get to 60 in forth 56 is flat on the floor maxed out there ain't no more . And according to what i am told that even the weight of a maxed out one ton is really more then O/D is designed for . My buddy Eugene has a 2001 5.9 tweaked a little and insists on using the O/D while pulling things . ask him how many times his transmission has been on the bench . Oh and i do not work on other peoples trucks BTW. Oh and ask the guy down the street that works on pick ups how well towing works on the NV4500 in O/D . IMHOP it is a Pizzs poor transmission lousy gear spacing lousy rev way to fast for backing unless your plowing snow . But that is just me . The six speed is a little better but rev. is still way to fast for backing .
I wont argue the reverse ratio, its a bit too high but I manage.
I wouldnt rate this trans at the top of the list but pizz poor? I completely disagree.
Used in its as designed manner its easily a 300,000+ mile trans. You may have to address a 5th gear failure in that time.(not a big deal)
Dont tow in 5th below 1700rpms. Simple. Dont push over 20psi of boost while in 5th consistantly, simple.
If your friend is constantly pulling his NV4500, its because he either lugs it in overdrive, uses the wrong fluid (only GL-4 synthetic and nothing else), or the guy who rebuilt it isnt doing it properly.
Manuals must be rebuilt properly or they will keep blowing. Period.
IT may not be the most durable, but I would be surprised if someone blew it in less than 100,000 miles of towing heavy unless they didnt follow the above. And at the cost to overhaul, its among the cheapest there is.
No tranny should be lugged in overdrive. Auto's dont give you the option (from the factory).
Quite a few people on Cumminsforum push way over the rated input power of the NV4500 with no problems. The only gear that cannot and shouldnt take above stock power is 5th.
This post was edited by PretendFarmer at 10:15:07 02/25/14.
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