Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

WTF "PICS ADDED"

Discussion in 'The Garage' started by shaun, Jun 8, 2004.

  1. shaun

    shaun 1/2 ton status

    Joined:
    Apr 22, 2003
    Posts:
    745
    Likes Received:
    0
    WTF \"PICS ADDED\"

    So we bought this chev y from a farmer and it seems to be changed. My friend has some questions about it so I will post it on here to insure I dont lead him in the wrong direction

    "I just started tearing my 1971 K10 project apart. I opened the rear diff to start cleaning it up and found it wasn't opened, but had a posi or locker of some kind. We started looking closer and found the axle perches are 2" wide (from a car?) instead of 2 1/2" and have some really bad welds on them as well as the shock mounts. But what I really need help with is the gears in the rear, a 12 bolt, but the gears are stamped with a 3/83 manufacture date. So if anyone can help...PLEASE?!?!? Oh yeah the whole gear stamp if anyone can decode it: 1 GM 339635 11 41 3 83. I'll post pictures of the posi lookin thing when I get to work tomarrow. "

    The questions we have are

    Do they stamp replacement gears with thier production date?

    Would there be a factory posi with replacement gears in 83 (the gears have a GM stamp on them so we know they are GM but 12 bolts stopped in 81)

    Are cars rearends the same width as trucks?

    What dumba$$ would weld 2 inch wide perches on when the springs are 2.5 inches long?

    I think those are it thanks for the help.

    -Shaun
    [​IMG]

    [​IMG]

    [​IMG]
     
  2. dhdescender

    dhdescender 1/2 ton status

    Joined:
    Aug 10, 2002
    Posts:
    628
    Likes Received:
    0
    Location:
    Qualicum Beach, British Columbia, Canada - Eh.
    Re: WTF

    the 41 and 11 on the ring tell us thats a 3.73ratio.

    Thats about all the insight I can really give.

    I'm not sure what car it would be from, the WMS to WMS would be WAY too narrow, possibly they pooched the old spring mounts and just welded new ones on?
     
  3. BlazerGuy

    BlazerGuy 3/4 ton status

    Joined:
    Apr 20, 2000
    Posts:
    9,206
    Likes Received:
    0
    Location:
    abcde
    Re: WTF

    [ QUOTE ]
    12 bolts stopped in 81

    [/ QUOTE ]

    Not neccessarily(sp?). GM just kinda phased them out, so it's possible to find them after 81, although they are few and far between... /forums/images/graemlins/grin.gif
     
  4. berg76

    berg76 1/2 ton status

    Joined:
    Nov 4, 2002
    Posts:
    238
    Likes Received:
    0
    Location:
    St. Louis, Missouri
    Re: WTF

    the '3 83' is the month and year the ring gear was manufactured. March 1983

    ~jason
     
  5. berg76

    berg76 1/2 ton status

    Joined:
    Nov 4, 2002
    Posts:
    238
    Likes Received:
    0
    Location:
    St. Louis, Missouri
    Re: WTF

    I guess im no help...I should read before I post /forums/images/graemlins/ignore.gif
     
  6. big83chevy4x4

    big83chevy4x4 3/4 ton status

    Joined:
    Mar 22, 2002
    Posts:
    6,587
    Likes Received:
    0
    Location:
    Sheridan, Michigan
    Re: WTF

    i though they got rid of the 12 bolt in 82, it could have been a factory replace ment gears though.

    is it a 12 bolt car or truck rear end? the covers are different, car is more round, truck is almost diamond shaped
     
  7. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

    Joined:
    Jan 27, 2003
    Posts:
    3,254
    Likes Received:
    0
    Location:
    Castro Valley, CA
    Re: WTF

    If you want ot know if its a car or truck rear end thats easy. If the posi has 1 big opening and 1 small hole opening on the other side, its a car. 1 big opening on one side and another big opening on the other side, truck.
     
  8. shaun

    shaun 1/2 ton status

    Joined:
    Apr 22, 2003
    Posts:
    745
    Likes Received:
    0
    Re: WTF \"PICS ADDED\"

    We know its 3.73's. Thanks for the confirmation though. With these pics maybe you guys can tell me what it is. I think a posi or govlock??
     
  9. 83ZZ502_Jimmy

    83ZZ502_Jimmy 1/2 ton status

    Joined:
    Feb 7, 2001
    Posts:
    3,103
    Likes Received:
    0
    Location:
    Richmond, VA
    Re: WTF \"PICS ADDED\"

    Def. a gov-loc, past that, I can't help ya

    John
     
  10. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,180
    Likes Received:
    1,388
    Location:
    E-town baby!
    Re: WTF \"PICS ADDED\"

    Truck 12 bolt with a Gov-bomb...

    Rene
     
  11. pauly383

    pauly383 Daddy383 Staff Member Moderator

    Joined:
    Jul 22, 2001
    Posts:
    16,217
    Likes Received:
    1
    Location:
    Mesa , Arizona USA
    Re: WTF \"PICS ADDED\"

    It is no doubt a 12 bolt truck axle with a govloc. It could actually also be an older hosing and newer carrier, or some other frankenstein thing with the spring perches coming from somewhere /forums/images/graemlins/k5.gif
     
  12. mrk5

    mrk5 The Sticker Guy Moderator Vendor GMOTM Winner Author

    Joined:
    Apr 20, 2004
    Posts:
    12,349
    Likes Received:
    1,050
    Location:
    Northern Colorado
    Re: WTF

    My brother-in-law's '91 1/2ton Z71 has a 12bolt rearend.
     
  13. shaun

    shaun 1/2 ton status

    Joined:
    Apr 22, 2003
    Posts:
    745
    Likes Received:
    0
    Re: WTF \"PICS ADDED\"

    Thanks guys that is what I thought. Now the build up continues. /forums/images/graemlins/woot.gif
     
  14. Blue85

    Blue85 Troll Premium Member

    Joined:
    Jul 26, 2000
    Posts:
    9,089
    Likes Received:
    489
    Location:
    Grand Rapids area
    Re: WTF

    [ QUOTE ]
    My brother-in-law's '91 1/2ton Z71 has a 12bolt rearend.

    [/ QUOTE ] /forums/images/graemlins/confused.gif /forums/images/graemlins/confused.gif
    Not from the factory. It's either swapped in from an older truck or it's actually a 10-bolt or 14-bolt s/f. Do you know the history of the vehicle?
     

Share This Page