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Help ID auxillary tranny??

Discussion in 'The Garage' started by greatwhitenorth, Oct 3, 2002.

  1. greatwhitenorth

    greatwhitenorth 1/2 ton status

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    Last friday, me and my buddy ripped into this little auxillary tranny that he has had lying around his shop for some time. He's an old trucker and GM guy and he's never seen anything like it so I'm hoping someone here knows something about it. Okay:

    The unit is about 2" wider than a NP205 minus the front output portion, so think a cast case 2" wider than a 205, but about 6" shorter due to the lack of a front output shaft.

    Not synchronized, 3 gears on the mainshaft, 3 on the countershaft.

    1-ton yokes on either end, coarse spline yokes (~10spline)

    Two shift rods just like the NP205; no linkage came with the unit.

    Four ~1/2" threaded holes on the top to mount it to a crossmember.

    One underdrive gear (approx 20% under)
    One overdrive gear (approx 30% over!!!!!!)
    One straight thru
    and a neutral position

    "HUBBARD" is stamped on one of the end cap of one of the shift rail.

    1 bolt on the countershaft retaining plate

    Stapmed "Stewart Warren 78744 - Made in USA"

    Stamped "70810 S.W."

    I counted the gear teeth so I'll get some exact ratios in a couple days when I get around to figuring them out.

    This tranny was bought state side and brought back up across the border.

    Anyone got any ideas as to what this thing came outta?? We're thinking about 1950's gear, but having an under and a BIG over sure would give you many many options with diff gears and whatnot.

    Any info much appreciated, thanks.
     
  2. POWERMAD

    POWERMAD 1/2 ton status

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    Got any pics?
    It sounds like an old Brownie box.
     
  3. greatwhitenorth

    greatwhitenorth 1/2 ton status

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    No pics unfortunately. It has a PTO cover on one side, and a large access opening on the other side.
     
  4. POWERMAD

    POWERMAD 1/2 ton status

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    Pretty neat box, I swapped in a 6.2 in a 1 ton for an old boss and that thing would only do 50 MPH.
    he had an old Brownie and after that installation it would get to 80 LOL
    It is a 2 wheeler with a 465 and with the 465 in low and the aux box in low that thing was a crawlin machine LOL
    That was a pretty cool conversion, duals with glass packs after the cab. that is a cackleing machine . LMAO
     
  5. greatwhitenorth

    greatwhitenorth 1/2 ton status

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  6. POWERMAD

    POWERMAD 1/2 ton status

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    Yep that's the critter.
    We had an old Mack dump truck roll in the shop the other day with one of those.
    Alot bigger but it was an oddity, no one but one of the ol timers had seen one.
    Twin stick tranny and that dude too.
    Talk about gear reduction!!
    I did not get to try it out but I imagine that you could take a nap on the wheel and an hr later ya would start to slide off at an idle.
     
  7. trailblazer87

    trailblazer87 1/2 ton status

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    That is definately an old brownie box, we have one on our old ranch international. Its one SOB to get up to freeway speed, splitting each gear when loaded /forums/images/graemlins/tongue.gif
     
  8. greatwhitenorth

    greatwhitenorth 1/2 ton status

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    Thanks for the replies guys. Anyone know what sorta application it would be likely to find one of these units in, or are these a-boxes just something farmers and truckers bought as needed???

    Thanks.
     
  9. kennyw

    kennyw N9PHW Premium Member

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    They could be found in just about anything if it was ordered that way. Dump trucks and over the road trucks of the 40's and 50's were the most common. Most ranch trucks just went with a straight 4 or 5 spd and a 2 spd rear axle.

    I am planning on installing a brownie between a SM-420 and a divorced T-case in my truck.

    Common ratios:
    2:1 low
    1:1 straight
    .85:1 overdrive
     
  10. trailblazer87

    trailblazer87 1/2 ton status

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    They are stronger than the rest of your drivetrain, but length will be an issue with anything less than a long bed single cab.
     

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