hello im new to the whole Ford thing,plz forgive me for my ignorance.....Buttttt,i got a 84' F250 and it has a "us gear" unit added to it and it doesnt work at this time,and is stuck in the lower end,so my (i belive) C6 is screaming trying to achieve 55mph,,,
My questing is to remove and or replace my trans is there a trans with OD that wont scream at highway speeds and or wont chew to much fuel?
any help is thankful

 

why not fix the us underdrive unit or remove it?? why address the tranny if the other unit is the broken one?? what gears in the axles??
nate

p.s. Post this in the pre powerstroke diesel section if you want more resposes.

 

All parts are available for the gearvenders. In the prepower stroke forum for your truck crewdually has rebuilt his and has pictures, and will help. Start a thread called gearvendors, They are the best thing for these trucks.

 

Star, it's a US Gear, not Gear Vendor.

klkr245, the US Gear is a very tough unit. I would think the problem lies in the electrical somewhere other than a problem in the unit. If your truck is screaming at 55 mph, it's likely you have 4:10 gears and the US Gear is an overdrive. They did come in either under or over drive. US Gear mounts ahead of the transfer case, Gear Vendor mounts behind the transfer case in 4x4's.

I would look at fixing the over drive rather than removing, the other options are an E4OD plus the computer or a ZF overdrive manual. Both are going to be expensive. I suppose you could remove the US gear and put in a higher gear ratio. 3:55's are common in these older trucks.

 

I have one truck with a USGear and another with a GearVendors. If you remove the USGear, you will have some mods to do on the drive lines. The front wheel and rear wheel drive shafts will have to be lengthened to the original lengths. I think it would be easier to trouble shoot the over drive. It is likely an over drive rather than an underdrive, but they made both. You may be able to call the manufacturer for troubleshooting help....they are nice people there.

 

An over drive that is stuck in normal would give regular rpm for the speed driven as if it was not there ... In overdrive it would increase the top speed with the same rpms ...

An underdrive would raise the rpms for a given speed in relation to the original rpm/speed capability of a particular engine-tranny-rear combination ...

So it seems that having the rpms high at 55 might be an indicator of an underdrive in the under mode ... Just like low range in a 4x4 ...

 

Does it have a tach.

 

needing help with 6.9 ltr diesel we are rebuilding and can't find specific torque specs for the top of the engine. The timing gear cover and the 3 bolts that hold on the injector pump. can anyone help. nothing in all my manuals.

 

I thought I had them, but can't find them right off. If you will post in the pre power stroke you will have the answers in short order.