two speed rear end

[NoDaK]

thinking a two speed rear end would be cool to have for highway cruising. i remember my uncle had one on his mid 90's cummins. made it a dream to do 70-75 on the freeway. anyone have one? know how much they cost?

 

[1320Cummins]

I have never heard of such an axle for a light duty????? Would be nice though

 

[88beast]

they made them it was in the f superduty or something i want one bad but cannot seem to find one
i know a guy who had one stock in his 350 rollback but removed it

 

[crashnzuk]

I have never heard of such an axle for a light duty????? Would be nice though

X2, never heard of one from a credible source. I think most people confuse an aux trans for a 2 speed rear.
Travis..

 

[NoDaK]

had the little red button attached to his shifter...

 

[swampdigger]

I've read about them before. I think they were around in the 50's or 60's or something.

 

[Shadetreemechanic]

had the little red button attached to his shifter...

It was likely a gear vendors or other aux transmission. Search around here for gear vendors or us gear or doug nash and you will find lots of info.

 

[RLDSL]

A lot of folks with the US gear/ doug nash auxiliary boxes have the little red button. It makes it behave like a 2 speed rear.

 

[crashnzuk]

My dads truck has a GV with the red button on the shifter.
Travis..

You must be registered for see images attach

 

[MIDNIGHT RIDER]

I have seen a few old I-H 1-tons that came factory-original with a 2-speed rear, vacuum-operated.

2-speed rears are always going out and giving trouble.

They usually quit in such a way that the axle is in neither speed and therefore will not drive the wheels; this is somewhat disconcerting, especially when climbing a bad hill; once she quits pulling, the only way to go is down --- backwards.

 

[crashnzuk]

My dad had an old bus that was converted to an RV. It had a 2 speed rear and for the nearly 20 years he had it never gave a lick of trouble.
Travis..

 

[88beast]

the guy i know it was a 2 speed rear
the upfitter for the rollback may have added it though it did look huge