U S gear auxillary transmition (overdrive)

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am interested in a gear-splitter overdrive on my 96 3\4 ton 4x4 ext cab with . 410 rear. Any info re. mpg inc with the rpm drop at 75 mph???? Information presented so far has been about gear vinder. The U S Gear would allow overdrive in four wheel drive mode.

 

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Moving this to the Products/Accessories Forum.
Andy

 

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I installed a US gear in my 95 5 speed 4x4 and am quite happy with it. I cant help you with the rpm in your with the 4:10 mine is the 3:54 It is in the 1500 rpm range at 65 mph . The only negitave I have is from the passenger seat as the split shift makes a slight clunk. I was quite concerned with the idea of a splitter that would go between the trans and the transfer case. I know that there is supposed to be a lockout to prevent o. d. and 4 wheel from engaging at the same time, but if they do it could be very determental to the driveline.

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1995 2500 5 spd bombed. 2001 ETH 3500 stock. 1972 1066 International Harvester 414 ci diesel pulling tractor.
GONZO

 

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I was told that the US Gear unit works with 4WD engaged because of its placement beteween the transmission and xfer case.

Rob

 

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I have the US Gear OD unit on my early '91 (see sig). I was HOPING for more effective gear splitting with my 727 3 speed AT, but the loose torque converter prevents that under all but a small percentage of circumstances, like a REAL twisty upgrade under heavy load and low speed - and a forced top speed in 2nd OD of about 45-50 mph. A tighter, lower stall TC would REALLY bring this setup to life, and it's NO criticism of the US Gear unit - it has been flawless in over 100,000 miles of use with significant towing of our 8,000 lb fifth wheel. It DOES "clunk" pretty noticeably if shifted at higher road speeds, but I normally anticipate usage, and do most in-out shifting at 35 mph or less, The US Gear unit reduces engine rpm by 22 percent, and in my case, moved my top speed from a 80 mph maximum up to 95 mph - that with a 3. 07 differential.

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Early '91 250, 727 AT, 307 rear... Banks Stinger exhaust, intercooler... US Gear OD... MORE than a match for every new PS Ford encountered so far...

[This message has been edited by Gary - KJ6Q (edited 10-20-2000). ]

 

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Gary, glad to hear you like the US gear. Is there any increase in the noise level in cruise? I've been thinking of getting one.

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99 3500 QC 4x4 a/t 4. 10 SLT loaded except leather Driftwood/agate Proper Valvement, PS, Line-x

[This message has been edited by Pointer Hill (edited 10-20-2000). ]

 

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Noise level is REDUCED, since the engine is loafing, compared to before - also the fact that the OD can be left on at will works great for me, since my Cummins will STILL pull our fiver up a 4-5% grade in OD at 65 MPH, no strain! The Gearvendors unit is worth a look as well - had one of theirs on a '85 Chevy 1 ton van with good success, and the newer ones are even better, since they use their own fluid supply and have the 22% OD ratio instead of the former 33%, which provided no gear split... You won't go wrong with either unit...

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Early '91 250, 727 AT, 307 rear... Banks Stinger exhaust, intercooler... US Gear OD... MORE than a match for every new PS Ford encountered so far...

 

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rs:
I put a US Gear on my truck about 40,000 miles back and it has made my towing much easer. The -clunk- we have can be reduced with proper timing in the shift. I have gotten fairly good at the shift. The noise is not that bad with shift timing.
With the running noise I have it sounds a lot like a road racing car with a gear whine. Not that bad but you can hear it.
The RPM at 2000 is 80 mph. The most used shift for me is between 3rd and 4th. I do use 5th over in towing but only on flat ground.
Hope this helps some.
By the way, I drive a 4x4 and their is no problem with unit.
Preston Thompson

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96 3500 Black 5 speed turbo diesel, SLT, with US Gear overdrive, Rhino liner, Reese 15,000 lb. fifth wheel hitch, US Gear de-celarator exhaust brake, muffler elimination kit, Amsoil lub. , with other goodys on the way.

 

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Just a word of caution. Some wrench jockey somewhere stripped the plug on my aux. I suspect it was at DC because they told me to take it to a tech at US Gear to check because it looked to them there was a leak and they would not touch it. So here I am having to get someone to drill it out and tap it so I can check the fluid level.

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98. 5 24v 3500 2wd 3. 54 lsd pyro & boost in A pillar DD1's E-brake by Jacob U. S. Gear over/direct O'Reilly Air Horns 105 gal aux tank 35' Prowler 5th wheel with three slides Firestone air helper springs