Posi 12 bolt

Discussion in 'Got gears?' started by James3047, Apr 6, 2021.

  1. James3047

    James3047 Member

    What’s the best posi for a 12 bolt?
     
  2. BrianTrick

    BrianTrick Brian Trick

    What are you doing with it? Resto/cruiser? Street/strip? All-out race?
     
  3. James3047

    James3047 Member

     
  4. BrianTrick

    BrianTrick Brian Trick

    Tru Trac posi unit and a new pair of c-clip shafts form Moser,Yukon,or similar companies.
     
  5. monzaz

    monzaz Jim

    Anything will work on the street.
     
  6. monzaz

    monzaz Jim

    Best.... to vague ...best for who?
    which motor is the best
    which transmission is the best...
    See where we can go with this.... lol.
    Each customer is different.
    Which is the best for you and for your money spent?
    Which is best if you want a rebuild-able tunable unit?
    You have to google the products read how they work see how you will drive and pick.
    Good luck.
    Jim
    JD Race
     
  7. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    James, what car do you have? Does it presently have a 12 bolt?
     
  8. stevpiz

    stevpiz Member

    have my Moroso Brute strength posi unit for 39 years behind a neck snapping switch pitch TH 400 and worked big block, I think they were just tweaked Eaton units. Had to run the red lube and GM additive in it
     
  9. BrianTrick

    BrianTrick Brian Trick

    Yes,the Moroso Brute Strength is an Eaton unit with thinner clutches in it to increase to amount to 22. Great idea,but the thinner clutches have shown to fail. The traditional thicker knurled steel clutches are still the best out there. Tube it correctly and leave the spring pack out. It will likely last longer than us.
     

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