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Swappd in my ground and welded 14-bolt FF this weekend.....

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 6.2Blazer, Apr 9, 2001.

  1. 6.2Blazer

    6.2Blazer 1/2 ton status

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    Just excited that I'm finally getting the Blazer put back together......
    I did the 10-bolt to 14-bolt FF swap this last weekend. The bottom of the 14's case was ground off for about an extra inch of clearance. I'm going to do some measurements between the 10 and 14 to see what the ground clearance difference is now. The 14 also has a "lincoln locker" in it. This was done by welding the spiders to the side gears and essentially making a mini-spool. This way if I don't like it the spiders and side gears (now one solid piece) can be pulled out and a Detroit dropped in. Can't wait for a road test.
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    How did you go about shaving the bottom of your 14 bolt? Grinder? Last I had mine apart the bottom of the housing only looked to be about 3/4" thick. I'm really interested in your actual numbers when you figure them out![​IMG]
    I don't mind using my 14 as a skid plate once in a while, but extra ground clearance is always cool!

    Rene

    [​IMG]<A target="_blank" HREF=http://jules.coloradok5.com>http://jules.coloradok5.com</A>
     
  3. 6.2Blazer

    6.2Blazer 1/2 ton status

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    The main part I grinded off was the lip that runs along the bottom that's about 1" wide and sticks down about 1" from rest of the housing. In my opinion, that lip is like dragging a boat anchor around. I took an air-powered cut-off wheel and hacked off the biggest part of it, then cleaned it up with a grinder. The very bottom center, with about 2" on either side, of the housing in now smooth. I blended in rest of the lip up to where the notches are on either side. The cover was also trimmed.......basically, the bottom of the housing is now flush with the head on the bottom diff cover bolt. Anymore trimming and I would of had to either get a bolt with a smaller head or eliminate the bottom bolt all together.
     
  4. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Cool! I use socket head cap screws for my cover...looks pretty close to an inch could be gained!

    Rene

    [​IMG]<A target="_blank" HREF=http://jules.coloradok5.com>http://jules.coloradok5.com</A>
     
  5. extremeblazer

    extremeblazer 1/2 ton status

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    When I installed my 14 bolt I also ground that huge lip off the bottom end. The thing just looked like it would stop a train. I to ground the bottom down to the bottom bolt and smoothed it from side to side between the notches. I gained around 3/4 of an inch actual clearance as measured. I could of whent for more but wanted the bottom bolt to seal the pan. I did grind the remaning ridge back at an angle to the front to allow for the bolt area to stay but not leave an edge at all to catch on , its just a small ramp to slide off of. The 14 bolt has been installed and used for four months with no leaks or problems
     

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