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VB Diff compatibility

Discussion in 'VB - VK Holden Commodore (1978 - 1985)' started by tomjd78, Apr 14, 2018.

  1. tomjd78

    tomjd78 New Member

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    Hey all ive recently purchased a 1979 VB SLE with a vc flare kit and a 350 chev along with a TH350 box but it still has the original 4.2L diff i want to know if a 83 WB 10 bolt will fit and how hard is it to convert the drums to disc brakes. im a bit of a newby at all this and have got myself a starting point but just need to upgrade a few bits on the old girl. if there are better 10 bolt options that will fit i am keen to know what they are
    thanks for any help
     
  2. SL/ENUT

    SL/ENUT The SL/E Fanatic!

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    Only 10 bolt diffs fit are VB-VK ones only.
    Other option is VL borg warner diff.
     
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  3. tomjd78

    tomjd78 New Member

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    cheers for that im finding it hard to source things up here in nth qld so when something presents itself in my region im looking to see if they will work with my car. thanks again
     
  4. Zeke Topanaga

    Zeke Topanaga Active Member

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    Look for the borg warner 4 star is your best bet nowadays.
     
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  5. losh1971

    losh1971 Well-Known Member

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    Didn't some of the really late VK's have a BW??
     
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  6. Sandman

    Sandman Challenge Accepted

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    The VK's with the Borgies were only 26 spline rather then the stronger 28 spline like the VLT and VN onwards Borgies.
     
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  7. tomjd78

    tomjd78 New Member

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    thanks guys I will look into the VLT BW diffs and see what comes up are you suggesting the BW will be better due to more availability or just personal preference.
    Only VB to VK 10 Bolt and VLT BW will work on my 79 VB are they both just as good or is one of them more of a standout performer.
     
  8. losh1971

    losh1971 Well-Known Member

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    VL turbo diffs are rare but will be the best.
     
  9. immortality

    immortality Moderator Staff Member

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    4 star? don't you mean 4 pinion?
     
  10. VR38

    VR38 Well-Known Member

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    There are options these days to beef up the small salisbury if you are willing to throw money at it.
     
  11. tomjd78

    tomjd78 New Member

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    could be an option as im finding it rather hard to source another diff without going the complete $4500 9 inch from the rod shop
    your talking about beefing up the original thats in it now. what options would you be referring to
     
  12. VR38

    VR38 Well-Known Member

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    Harrop, and a custom made group order that was engineered thru Terry Bosenjak to name a few...
    Ringing the above or some major diff shops etc may point you in the right direction.
     
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  13. sire01TMK

    sire01TMK Member

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  14. Zeke Topanaga

    Zeke Topanaga Active Member

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    That is what they were called 4 star pinions, oppose to 2.
    The problem is parts for the 10 bolt nowadays.
    It would not take much to cut down a ford housing set it all up and fit it to a commodore and 4 star are stronger than a 10 bolt and better than a stock 9 in.
     

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