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ujoint conversion for a 6 lug 14 bolt SF

Discussion in 'The Garage' started by bajaviking, Nov 3, 2005.

  1. bajaviking

    bajaviking 1/2 ton status

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    :confused: I am putting a 6 lug 14 bolt SF in my Blazer, what ujoints should I use? I currently have a 12 bolt in it.

    Thanks!
     
  2. sweetk30

    sweetk30 professional hooker Premium Member

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    14sf should be a 1350 joint. cant help ya on the part# tho.
     
  3. shane74

    shane74 1/2 ton status

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    You need the standard 1/2 -3/4 ton conversion joint. Do a search on this site and you should be able to find it. I don't know it off hand. Otherwise I'd tell you.
     
  4. bajaviking

    bajaviking 1/2 ton status

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    Is is the same ujoint that you use for 14 bolt FF? If it is I think I have the partnumbers written down somewhere.
     
  5. HarryH3

    HarryH3 1 ton status Author

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    Hmm, when I swapped a 14 bolt SF into our '94 Suburban, the driveline shop guys told me that I could just swap the yoke from my old 10-bolt to the new 14. That way I didn't need a crossover joint. It worked. :cool1: But I'm not sure if the 12 bolt takes the same yoke or not. :confused:
     
  6. Janitorjim8

    Janitorjim8 1/2 ton status

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    can i have more info on how you converted a 14 bolt to 6 lug?
     
  7. HarryH3

    HarryH3 1 ton status Author

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    I didn't convert it. GM made a 6 lug version of the 14 bolt Single Floating axle. It was used in some extra cab 1/2-ton trucks and light-duty 3/4-tons. While not quite as beefy as a 14 bolt Full Floater, it is WAY beefier than a 10-bolt! :cool1: I just happened across one while trolling the aisles at the local pick-n-pull yard that matched the gear ratio of our '94 Sub.
     
  8. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    Harry, You're saying the S44 yoke fits the SF14B? The swap is just the yoke, correct? I needed a new u-joint anyway so I just bought the conversion one, but that's good info. I'm assuming your '94 'burb used the same rear as my '95 Yukon. My new rear was from an '88 light-duty 2500 (6 lug)
     
  9. HarryH3

    HarryH3 1 ton status Author

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    I don't know what the part numbers and such are, but I was able to remove the yoke from my 10-bolt (1994) and install it directly in place of the yoke that was on the 14-bolt SF. :cool1:
     
  10. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

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    Give Jess a call at Highangledriveline. Really helpfull guy. :D
     
  11. 83ZZ502_Jimmy

    83ZZ502_Jimmy 1/2 ton status

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    1310-1350 is Neapco PN- 3-3140

    John
     
  12. loafer

    loafer 1/2 ton status

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    The 3R yoke from a 10 bolt will fit the 14 bolt 9.5 sf. I did it on mine and it works great. You have to swap the seal guard hub thingy from the stock 1350 yoke to the 10 bolt 3R.
     
  13. Blue85

    Blue85 Troll Premium Member

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    So the pinion gear splines are the same on 10, 12 and 14sf axles?

    Won't putting the 12bolt yoke on the 14bsf require a different seal?
     

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