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6 lug 10 bolt to 8 lug

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by fad2blk99, Feb 21, 2001.

  1. fad2blk99

    fad2blk99 1/2 ton status

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    I've been told the best way to convert my 10 to 8 lug is find a 3/4 ton 10 bolt axle and use the knuckles.. or the whole axle all together. Esspecially if it has the 4.10s to match my rear 14 bolt F/F. I thought all the 3/4 tons were D-44s or 60s?? Do 3/4 ton 10 bolts exist? If they do; do they normally come w/ 4.10s? What year model truck do I need to look for? Thanks -Tommy
     
  2. thatK30guy

    thatK30guy 1 ton status Premium Member

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    You can use anything for D44 and 10B from the knuckles out, but not the shafts. Yes, it would be easier to swap, in my opinion, the whole axle for the right gear ratio to match the rear. If the gears are the same, then it would be easier to swap the backing plates, hubs, and rotors in place of the 6 luggers. D44 were available on 1/2 and 3/4 tons up to 81 or 82 and 10B started around 77 and go clear up to 91 in both 1/2 and 3/4 ton. The D60 is in a class of its own riding on the one tons which are not compatible with the D44 or 10B. Most 3/4 tons are standard with 4.10, as the same for D60's, but the 1/2 tons had few variations with the most common at 3.08 or 3.73. I have seen more 3.08 than 3.73's. All in all, the easiest swap to do, providing the gear ratio matches, is to simply switch the backing plates and rotors over to 3/4 ton if you are wanting to go 8 lug.
     
  3. kpanza

    kpanza 1/2 ton status

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    Yes they exist, although I am not sure exactly what years. When I converted my 10 bolt to 8 lug, I just replaced the hubs and rotors with 3/4 ton hardware from a Suburban. I opted for new rotors, went and got 3/4 ton hubs and backing plates from the salvage yard. It is pretty easy to do. The calipers fit right onto the 3/4 ton rotors, although I wasn't able to fit the 15" steel wheels that I wanted to, so I went up to the 16.5s. My Warn locking hubs just swapped right over, too. The only difference between the 1/2 ton 10 bolt and the 3/4 ton version is the larger rotors and 8 lug hubs, other than that there is no strength difference...
     
  4. Kyle89K5

    Kyle89K5 1/2 ton status

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    There's nothing to it, call the salvage yard and ask em if they have any 8 lug 44's or 10 bolts. If they don't, ask about just the hubs and backing plates. I've got 2 10's and a 44 sitting in my garage right now, from the knuckles out, they are all alike. I got lucky and found a 10 with a new set of 4.10's and a lockright for change. Just swapped out the 8 lug stuff and called it good. It's a simple swap that took me about 30 minutes.

    Kyle
    89K5
     
  5. 6.2Blazer

    6.2Blazer 1/2 ton status

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    The 8-lug 10-bolts found in 3/4 ton trucks, at least around here, are much more common in the junk yards then the 44's. GM started using the 8-lug 10-bolts around '77 to replace the 44's, while there are a few scattered 44's found in '77 model years and up for a couple of more years while GM used up the supply they had.
     

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