posi help

Discussion in 'Differential & Driveline' started by Supersoaker, Apr 20, 2017.

  1. Supersoaker

    Supersoaker Full Access Member

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    Hi guys :cheers: I'm starting my look for a rear for my c10 pro street

    I'm planning on a 9" with 4.30 gear 33-35 spline (900hp)

    Looking at a Eaton truetrac or a Detroit locker ..

    What would you guys recommendation be
    this is mostly a street truck so looking for something with little to no wine if
    possible.

    Thanks
     
  2. Honky Kong jr

    Honky Kong jr Full Access Member

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    I have a big bearing 9" 31 spline posi sitting here collecting dust lol......
     
  3. Supersoaker

    Supersoaker Full Access Member

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    what did it fit ?? ford posi. ??

    anyone give me some good info on a good posi ????


    really thinking from what i'm learning is the Eaton truetrac is the way to go
    but more $$$$

    talked in email to quick performance and they said I need a 35spline for my power goals and was trying to push me to a locker as it was like $400 less.

    I am reading the locker make a lot of noise
     
    Last edited: Apr 20, 2017
  4. Supersoaker

    Supersoaker Full Access Member

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    come on you rear end gurus take me to school . this is the first time doing a custom rear or any rear for that matter :shrug:

    been building and playing with jet boats for the past 30+ yrs :)


    so far I need 51-3/4 flange to flange, spring center is 25", 35 spline axles,
    eaton truetrac , 411 - 430 gear ,
    can't do a fab. housing as the spring mounts are 1/2 on tube and 1/2 will be on housing :(
     
    Last edited: Apr 20, 2017
  5. Honky Kong jr

    Honky Kong jr Full Access Member

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    You want unbreakable get a 14 bolt out a 90 what ever 454SS truck. It's a lot of weight but strong.
     
  6. SkinnyG

    SkinnyG Full Access Member

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    I researched all the types of limited slips, and decided that for my daily driver which also sees Canadian winters, I wanted a Detroit TruTrac.

    One of the reasons is that they generally act "invisible" in that they are very, very driveable. Another was that on an icy road, if one wheel has zero traction, it will act as an open diff, which should prevent me from sliding into the ditch.

    In my opinion a Locker is best suited for dirt, drift, or drag. You can "put up with it on the street," but it might not be ideal for a "street only" vehicle.

    I've done two winters now with the TruTrac, and I absolutely love it. WAY more traction, but doesn't act up or do anything strange - it just connects! I highly recommend them.
     
  7. Honky Kong jr

    Honky Kong jr Full Access Member

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    Spool
     
  8. Supersoaker

    Supersoaker Full Access Member

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    have one from my 07 doner truck :) too much unsprung weight
     
  9. Honky Kong jr

    Honky Kong jr Full Access Member

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    I would do a spool and 35 spline axles in a 9" light weight and strong and you can get a truss kit for it too, just make sure it's in a jig prior to welding or it will eat bearings.
     
  10. 77 K20

    77 K20 Full Access Member

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    For using it on the street my vote goes to the truetrac. I have one on the front axle of my truck- as putting a locker on the front can make it hard to steer. It feels exactly like an open diff- except I have great traction.

    I liked it so much a friend of mine then bought one for the rear axle of his 2001 Silverado and has used it the last few years. He said the same thing- doesn't know it is there but gets great traction.

    For the rear of my truck I have a eaton locker (detroit locker). It can bang/clunk when going around a corner and you either accelerate or decelerate. It will lock/unlock based on input torque. Or if the transmission shifts in the middle of the corner- the inside tire will bark/chirp. Also more noticeable tire wear. But offroad is where it shines and why I bought it.
     
  11. Supersoaker

    Supersoaker Full Access Member

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    Thanks guys and any more info is welcome

    being this is a street truck I will start looking for a

    big bearing 9" with , truetrac , 4.11 - 4.30 gear, 35 spline , disc brakes for 15" rims :party36:
    this should hold the my power plus some :) and be friendly on the street .
     

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