Auxillary transmission frustrations

[Big Don]

Guys,

I have been looking for an overdrive unit for my 89 D250 ('Ol Blue). I thought I wanted a GV unit but... .

1) won't hold back in high range.
2) Reverse on the unit is weak (operated by clutch packs).
3) Not recommended fro high hp diesel applications

So... ... thought I'd go with US gear unit. I don't like how it shifts... ... winds up a spring and "slaps" into gear.

1) They don't offer them for the Getrag 2wd. They did suggest that I may rebuild my transmission as a 4x4 (new output shaft &tailshaft) or replace it with a NV4500. That's kinda dumb, why would I want to buy a new transmission just so I could put there unit behind it.


Can any of you help me????


later
Don



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Ol' Blue "First of the first gens: 1989 D 250 Ice blue met. 5 spd 3. 54, 155,000, Banks stage III powerpack, 3. 5" straight exhaust, pump adjustments, "'Ol Blue Special" injectors.
1999 3500 4x4 Chassis cab Emerald green ISB 5 spd 4. 10 K&N Filter straight exhaust 9 ft flatbed WARN fenderflares,Let, 275hp injectors installed, boost and pyro gages, VA plug'n power and Practical Solutions boost module. Jacobs E brake. Getting ready to install Banks Power Pack TLC!!
May buy another one in 2009!!
Check us out at:
http://donstractorrepair. homestead.com

 

[Paul Herioux]

Don,
If you had a 4x4 I'd drive down and swap you for my front and rear 3. 07's. Going to 36x9. 50 Buckshots for ground clearance and it already backs up to fast.

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The smiling ex-dealer technician
89 w250, 47rh trans, cleaned up exhaust, Dynomax bullet muffer, 3" lift, unknown oversized injectors

 

[walmor]

Big Don, I don't know where you got your information about the GV unit. I have had mine in my truck for 4 years now and I tow a 10,000 lb fifthwheel and have had no problems. I feel that it is an excellent unit. I don't know what you mean as the #1 complaint, but as for backing they only recommend you turn it off when backing a heavy load in soft ground. It is rated to tolerate 30,000 lbs of load. I wouldn't own a early Dodge truck without one. They also use the GV in Bonneville race cars that have a whole lot more poop than your truck will ever have.
Now you know what I think.

Walt Morton

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91 D350,New style BD Brake,Gear Vendors O/U Drive,Gauges-Pyro,boost,tach,trans,rearend,brake,
Airbag rear,Transfer flow tool/tank, Exh. sys,Rino lined bed, Alcoa Mags,SS runningboards.
16cm.

 

[fastmark]

Don, my bud has a GV in a bombed 96 with a 5 speed. He bought the 4. 10's and realized he made a mistake. He also went to taller tires. He pulls a loaded 44' pace bigfoot with living quarters that, race car and all, weighs 25,500 with the truck included. He puts his foot on the floor. He has 65K on the rig and has had no problems for far

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Mark Faught, 92 ext cab service truck and a 84 crew cab one ton dually with a 91 cummins and NV 4500.

 

[Big Don]

Okay,

now we're getting somewhere. Do you have any troubles with backing a heavy load with the Gv units????
This is my first choice, but I have been discouraged by several folks.


thanks
Don

 

[Wirenut]

Find yourself a used Fuller 9 speed. I'm sure it will fit in there some way. I actually want to try this someday for my truck.

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• '93 250 LE 4x4 5spd 4:10 Loaded,dual 5" chrome stacks,12cm² turbo(37psi),PW injectors,K&N,pyro/boost,US Gear E-Brake,tool box,CB,10" AR rims, 285/75/16 Bf goodrich. "wirenut_21529" on Yahoo Messenger
• '97 Ford B-Series school bus (5. 9 Cummins!)I'm gonna Bomb it!
• '94 GMC 2500 6. 5L Turbo

PICTURES.

 

[fastmark]

Don, I will have to ask my buddy about backing. He is a pretty good driver for a non-trucker. He did have a unigue way of learning to drive a truck. He drove trucks in Veitnam. He said it is real easy to learn that you never stop your truck because someone might be shooting at you!

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Mark Faught, 92 ext cab service truck and a 84 crew cab one ton dually with a 91 cummins and NV 4500.

 

[fastmark]

Don, i just talked to my bud and he said that the unit automatically locks out below 25 mph so he is not sure want you mean about the reverse gear stuff. He has had no trouble in 70,000 miles of towing a big load. Mark

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Mark Faught, 92 ext cab service truck and a 84 crew cab one ton dually with a 91 cummins and NV 4500.