Found a Spicer Brown Lipe auxiliary 3 speed transmission in the junkyard today.

[72timemachine]

First off I am not 4x4 literate so bare with me please.

I happened upon a 1975 3/4 ton 2 wheel drive Burb in the boneyard today.

I peeked in the window and saw a strange non factory stick shift rising out form the floor which was obviously weird to me. I looked at the driver's foot well and discovered it had a factory clutch pedal....ok, cool.

Mind you, the engine and trans where already gone but when I dove under the passenger side I saw some weird fuel pump looking thing mounted to the frame rail. I grabbed the small fuel hose which was still attached to one side and out poured a small amount of diesel fuel.

Putting things together, this previous owner had a diesel engine, 4 speed manual, 3 speed Brownie and an 8 lug full floating GM rear end in this rig.

Anyway, does anyone know how you operated the Brownie box, I found the gear ratios for the Brownie Lipe model 5831 b and if correct they are as follows:

over .85 direct 1.00 under 2.35

So does that mean for each revolution the drive shaft makes the output shaft on the Brown rotates only .85 of a revolution when in the overdrive position....for example?

Do you shift this thing on the fly or choose a gear before you begin driving?

Thanks for any help.