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12 bolt r&p

Discussion in 'Pacific Region' started by leadfoot067, Aug 19, 2003.

  1. leadfoot067

    leadfoot067 1/2 ton status

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    anybody have a 373 0r 4.10 for a 12 bolt they wanna get rid of??? just need a ring and pinion
     
  2. Topdown

    Topdown 1/2 ton status

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    As soon as I get my a$$ over and pick up the 12b I am buying I will have a matched set of 3.73's to sell... though not just a R&P
     
  3. leadfoot067

    leadfoot067 1/2 ton status

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    well its for my 2wd dd. si i cant even use the housing or anything..
     
  4. kennyw

    kennyw N9PHW Premium Member

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    You can still use the 4x4 housing /forums/images/graemlins/thumb.gif you would only need to relocate the shock brackets which is fairly easy to do with a grinder and welder. I have been running a 2wd 12 bolt for over a year with my original 6 lug axle shafts and brake parts. Now I am running a 2wd 14FF in its place and the shocks still bolt up but limit droop.

    **edit** Of course what year truck are you putting it in? Topdowns K5 being a first gen would have 40" spring spacing so that will mean you would have to relocate the spring perches as well for any 2wd...
     
  5. leadfoot067

    leadfoot067 1/2 ton status

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    its a 67 gmc short wide box...
     
  6. kennyw

    kennyw N9PHW Premium Member

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    [ QUOTE ]
    its a 67 gmc short wide box...

    [/ QUOTE ]

    2wd, '67 GMC should have the 42.5" spring pad spacing. I have a 12 bolt with 3.40 gears not currently in use with 6 lug axleshafts.

    Why not run a D44 rear axle? Isn't that stock in your truck? They are non-C-clip axles which is better in my opinion.
     
  7. leadfoot067

    leadfoot067 1/2 ton status

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    no its a 12 bolt... i checked when i got it with 355 gears,.the truck i had in high school was a 67 gmc swb also and it had the dana 44 with 3.54 gears in it...dont know if somebody changed it or what /forums/images/graemlins/confused.gif
     
  8. kennyw

    kennyw N9PHW Premium Member

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    It has been changed if it has a 12 bolt in it now. The 73-87 GM 12 bolts have the same spring perch spacing and will bolt in though with the shock mounts relocated.
     

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