Gearvendor OD, who else makes OD's?

[jmccart]

Like it says, who else makes OD's for out trucks? GV's look totally awesome, but they are expensive.



Thanx.

 

[sbentz]

We run one in the dragster, and shift it at 120 MPH at full power. Never failed. Spend the money, and get the best.

 

[sfr1047]

Also look at the US Gear Dual Range in either an over or under drive.



Dual Range Auxiliary Transmissions, Overdrive and Underdrive

 

[Russknh]

U S Gear is stronger, lets you run an exhaust brake and stop full load without a OD failure and will let you split low range also just in case you are working the crap out of your truck with some heavy loads over 12 % grades off road

(been there -done that) pulling some horse trailers

 

[jmccart]

Thanx for sharing guys. The U. S. gear unit looks like it is all gears and no clutches. That would seem good.

 

[Mrudolph]

Thanx for sharing guys. The U. S. gear unit looks like it is all gears and no clutches. That would seem good.

US Gear won't make one for the G56 tramsmission, not enough interest.

 

[Doubleclutch]

The Gearvendor is a good unit. Very quiet! You don't want it to be in OD when the exhaust brake is on... but it doesn't make much sense to use engine braking when in overdrive anyway. The guys that build them are very supportive and have a long history of "unusual" applications. If SBENTZ isn't breaking them under full load... . I tried them and liked it! Russ is right about the 2x4 only though, don't know about the stronger, but definately quieter!

Greg

 

[Lektrikman]

Overdrive transmissions

JM, As one of the other guys said US Gear has so far decided not to make an adapter for their OD trans for our G56 equipped trucks. I have emailed the customer service boys at US Gear a number of times and they don't seem interested, saying that the transmissions keep changing so fast in the new trucks that they can't keep up with them.

I had asked them about an adapter to mount the US Gear OD behind the T-case (they normally mount their unit between the trans and the T-case) as I don't want to rework all my driveline to install an OD unit.

I have owned a Gearvendors unit and although it worked fine, I was always concerned about the amount of clutch material in the oil when I changed it.

I also didn't care for the little piston pump that provided oil pressure to actuate the clutch, which was driven by the output shaft, so you had to be running above 25 mph to get the unit to shift into overdrive.

I tend to think a lot like you, that a gear box like the US Gear unit would be less prone to have problems in the long term.

Let me suggest that maybe if a number of us wrote the US Gear customer service group and expressed a desire to obtain one of their units for our trucks that they might sit up and take notice.

One thing for sure, none of the Overdrive units are cheap and the payback takes a long time. I'd just like to reduce my RPM's when I'm on the Interstate rather than run the crap out of the engine. Lektrikman