8.2 rear gears

Discussion in 'Got gears?' started by Mach5racing, Sep 13, 2022.

  1. Mach5racing

    Mach5racing Well-Known Member

    I have a 69 skylark with 3.23 gears and a posi. I am looking to go up to the 3.64 gears if I could ever find a set. I was wondering if the 3.64 gears for the carrier with 3.23 gears or only the 3.42? Or am I better off going with a 12 bolt? Thanks guys.
  2. Stage 2 iron

    Stage 2 iron Platinum Level Contributor

    Contact Brian Trick here on the board or Monza they both build first class rears. I do know you can get a new pozi unit for the 8.2 rear
  3. Mach5racing

    Mach5racing Well-Known Member

    Thank you I will. I did buy the posi from Brian a few years back. I forgot about that.
    Stage 2 iron likes this.
  4. BrianTrick

    BrianTrick Brian Trick

    The original GM 3:64 gears will need a different posi unit. I would suggest leaving that 3:23 posi rear together and either parking it in the corner,or selling it to fund the one you want.
  5. monzaz

    monzaz Jim

    What will you be doing with the car that you want more gear ratio than the 3.23 which is a very good ratio for a three speed trans.

    And also are you sure you have an original 68 69 70 BUICK rear under the car? MAybe it is a Pontiac? then that switches everything.
  6. Mach5racing

    Mach5racing Well-Known Member

    The rear is for sure a 69 Buick 8.2. And I would like some more off the line. The car has a built th350 and I swapped in an LS last year. It currently has 414 rwhp and 470 rwtq. I don’t do much if any highway driving. Someday I’d like to either add a gear vendors or an overdrive manual trans.
  7. BrianTrick

    BrianTrick Brian Trick

    If you went manual transmission,you can order one with a steeper cluster to accommodate the 3:23’s. A lot of ways to skin the cat on this one. Since the car is not original,I would just swap an 8.5” rear into it. Plenty of parts and gear ratios available for that.
    FLGS400 likes this.
  8. Mach5racing

    Mach5racing Well-Known Member

    If I do a manual it will most likely be used just because of the cost. So getting the steeper gears may not be a way. I just thought if there were some 3.64 gears out there and my rear end is in great shape with one of your posi units Brian that I could swap them in. I know it’s been awhile since they have been made. Really just getting a plan together for fall/winter.

    Attached Files:

  9. Dano

    Dano Platinum Level Contributor

    I agree w/Brian - Put a 8.5 in and sell the 3.23 & the new carrier (@Brett Slater might be int.) to fund the 8.5, which is a better rear & has a slew of gearsets avail. You'd just need a '71-2 driveshaft (or have yours shortened). I have a core 8.5 if needed & have Brian or Jim build it.
  10. Mach5racing

    Mach5racing Well-Known Member

    That’s a good idea. I guess I need to find out what my rear end is worth and what building one would cost. I’ll do some looking
  11. monzaz

    monzaz Jim

    The guy in Peru needs that ratio and posi...lol. :) Jim
  12. BrianTrick

    BrianTrick Brian Trick

    Yea,just ship that in a large envelope.
    FLGS400 likes this.
  13. monzaz

    monzaz Jim

    he he... Well just the posi and ring and pinion... XD
    Most int'l people know about the expensive shipping.
    Last edited: Dec 25, 2022
  14. César Machicao

    César Machicao Active Member

    I wonder if you thought about selling the entire set (3.23 ring and pinion w/POSI unit)? Could you can add some pictures of your setup if is possible? Please let me know and if you have the possibility to send it to the East Coast and surroundings.
    Dano likes this.
  15. rus

    rus Well-Known Member

    You could also go with a 200-4r tranny. 323 first gear in a 200-4r would be same as a 3.50 first gear in a 350 tranny.
  16. Mach5racing

    Mach5racing Well-Known Member

    I did think of that but I hope to go manual someday but for now I’d like the fun of a 3.73 gear set That with the power I’m making now would be much more fun.
  17. Nick 66 Skylark

    Nick 66 Skylark Well-Known Member

    Are you selling it, because I'm looking for a posi rear end for my 66. I'm located in Boston Massachusetts

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