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posi rear end vs regular

Discussion in 'The Garage' started by NEK5, Jun 12, 2006.

  1. NEK5

    NEK5 3/4 ton status Premium Member

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    blew mine and have the chance of getting a posi put in...what are the pros and cons to putting it in...compared to my stock 10bolt....which is open if thats the right term
     
  2. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    for a posi there really isn't much of any downsides I can think of vs an open differential. But lockers can be a little fussy.
     
  3. LVJimmy

    LVJimmy 1/2 ton status

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    Can make it hard to steer if it is set up tight.
     
  4. DirtyJim

    DirtyJim 1/2 ton status

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    a locker locks the rear axle and makes both wheels turn when on the gas no matter what. where a posi does make both wheels trun when on the gas but lets the axles "slip" when turning which gives you better road manners.
     
  5. NEK5

    NEK5 3/4 ton status Premium Member

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    just out of curiosity, what is 10 bolt 3.73 posi worth?
     
  6. lamberthkp

    lamberthkp SITFU Premium Member

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    dont really know most junk yards sell them for around $200.
     
  7. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    A lockright in an open axle is very roadworhty . A no-slip is even better as it has synchros . Posi's still slip , slip is bad in a wheeler :thumb:
     
  8. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    agreed, a lockright is easy to install and is the same price you'd pay at a junk yard for a differential. Plus you don't have to relace any parts on the axel you have now. I recomend the lockright :)
     
  9. kwissman

    kwissman 1/2 ton status

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    My 10 bolt Gov Lock Posi just self destructed after installing the 38" tires. it did not even make it 50 miles. I would stay away from the GM Posi if it is a Gov Lok. Get an Eaton Posi with the springs if you want a posi.
     
  10. NEK5

    NEK5 3/4 ton status Premium Member

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    but this is more of my DD...i dont plan on wheeling it alot, just a little here and there, maybe every few months
     
  11. NEK5

    NEK5 3/4 ton status Premium Member

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    how can you tell if its a gov lock???and i only have 33s so i dont think i`d run into the problem you did....
     
  12. NEK5

    NEK5 3/4 ton status Premium Member

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    wont a locker be even worse?...


    if i`m going to be using my truck as my dd, and maybe wheel it once every few months, and plow with it in the winter...what is better for me...if i do the trade then i will no longer have the winch(which didnt really do me any good anyways(probably need dual batts and bigger alt.))
     
  13. kwissman

    kwissman 1/2 ton status

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    A Gov Loc will have a weight on a shaft in one of the openings on the differential. There is also a small cylindrical device next to the weight on a shaft that spins off the side gear. An eaton locker will have springs in between the side gears that creates the pressure on the clutches.
     
  14. NEK5

    NEK5 3/4 ton status Premium Member

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    ok...i think i`m gonna go with the posi then, i probably wont be wheeln her any more anyways...just gonna use it as my DD for now..then maybe get another DD...and i might think about wheelin again, but not until then...
     
  15. 88Silverado

    88Silverado 1/2 ton status

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    I went with an Eaton in the rear and an Auburn in the front.
    The Eaton is a very strong, rebuildable unit and you can get them set up with different spring pressures. I think 800PSI springs are the highest setup but you will probably get chatter during turns. I noticed a big difference after installing them in mine.

    Now, for the hard core wheelers, the locker is the best. If you have one wheel off the ground with a posi you are going to transfer a lot of the load to the wheel thats off the ground as opposed to being full locked but a posi is a big improvement over the open carrier.
     
  16. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    Yeah go for the posi unit that DirtyJim has. A posi has very good road manners and would be perfect for what you need it for. A locker can easily be used on the street, but can chatter a little bit in turns at low speed.

    The PowerTrax Lockright is perfectly fine for use on the street. I have one and I DD my truck. I like how if you give it enough gas coming out of a turn you can chirp the tires as the thing locks again.
     
  17. DirtyJim

    DirtyJim 1/2 ton status

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    posi

    jasper posi

    posi.JPG
     
  18. crash1369

    crash1369 1/2 ton status

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    what is this lockright you speak of? or this no-slip? are these different than a locker?
     
  19. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    The lockright and No-Slip are basically the same. They both replace the spider gears in an open diff carrier. The No-Slip has clutches in it so it is just smoother than the Lockright, but also almost doulbe the cost.
    This is the Lockright: It can be had much cheeper from other places.
    http://store.summitracing.com/partdetail.asp?autofilter=1&part=PWT%2D1920%2DLR&N=305029+115&autoview=sku

    [​IMG]


    EDIT: Jeg's has it for $230
    And I recomend getting the hardened cross shaft so that it doesn't wear into it and could play in the rear end
     
  20. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Lockright and No-Slip ARE lockers . Bot will positively lock up the axles . They both work the exact same way , ones is just quieter .

    They work by using the surface of the ground , and the center pin beween the shafts . When you apply power to the driveshaft and it starts turning the ring gear , the center pin wedges into the couplers of said locker pushing the couplers into the drivers ( side gears ) .

    For turning , the tires on the ground are turning different speeds , and the locker is able to relax a little and let the teeth of the couplers and drivers overun each other . Producing a nice click noise in the Lockright and total quiet in the NoSlip .

    Its really cool and cheap . Check it out by googling Lockright :thumb:
     

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