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3.42 ratio in my rear diff

Discussion in 'The Garage' started by Disciples Performance, May 11, 2006.

  1. Disciples Performance

    Disciples Performance 1/2 ton status

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    Hey guys in my 87 K5 my 10bolt that is F*cked right up cause the lady that had it shot the pinion into the diff and it broke 2 teeth off the crown and wrecked the carrier now is the 3.42 ratio common in all the 10bolts on blazers or what cause i need to find one and quick just so i can get it rolling plus im also looking at some guy that is selling a full set of 3/4 ton axles thats what i really want but im just wondering for rushing i wanna see if i can find in a wrecker and wondering if anyone knows how common they are?

    Thanx
    Nick
     
  2. yellowK20

    yellowK20 Well Lubricated Premium Member GMOTM Winner

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    Pretty uncommon I'd say for a blazer but lot's of subs and 3/4 tons came with them so it should be easy to find
     
  3. beater_k20

    beater_k20 Banned

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    put the 3/4s in it, and you wont have to replace the rear again.
     
  4. Disciples Performance

    Disciples Performance 1/2 ton status

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    yup thats true but for the time being i just kinda need to know what kinda trucks i should look for that might have a 10 or a 12 bolt diff with 3.42 ratio
     
  5. beater_k20

    beater_k20 Banned

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    12 bolts with 3.42s are going to be pretty tough to find. 3.42s started becoming more common with the introduction of the 700R4 (1982) and the last 12 bolt was used in 1981.
     
  6. Disciples Performance

    Disciples Performance 1/2 ton status

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    well then lol ah well ill just look i might just say F it and get a 14FF and w/e ratio it is let it be and let the front be a 3.42 i just need the axle so i can move it from my buds house to my house lol
     
  7. 87BrnRsd

    87BrnRsd 1/2 ton status

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    3.42 was the ratio that came in my 87 K5. I still have the factory 3.42 ring and pinion from the front since I swapped in 4.56's. I can sell them to you very cheap if thats what you need. I would say go 3/4 ton though....
    -Harrison
     

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