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Help on diff gears

Discussion in 'LSx Development and Modification' started by bruzza, Apr 10, 2006.

  1. undersuspicion

    undersuspicion Now That's How We Roll!

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    i still reckon go for 3.73's mate.
     
  2. helicraze

    helicraze New Member

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    I've got the 3.73 in the clubby, getting 3.89 this week fitted.

    Whatever you do, there is a central diff place in melbourne do not use them,

    -as soon as i got the car back (paid $1500 new gears and LSD rebuilt etc) it would whine starting off and at 70-80KMH.
    -was told to let it run in
    -still whining so took it back, said he replaced gears but still exactly the same (not sure why he gave it back).
    -developed groaning noise from diff when doing corners, called them and was advised it would go away.
    -asked again to get whine fixed he said its not the diff its my tires etc (funny i have new tires swapped out anyway), gave me the run around, was not very accomodating so did not bother
    -rear diff bearing got noisy, took it back and told them to fix the whine, got the bearing fixed but still whining
    -now one of the seals is leaking.

    Absolute idiots, i really should dispute this on my credit card but its hard as a shop fitted it and subcontracted the diff out to central diffs.

    Anyway, you have been warned.

    I'm using someone else now.

    So far i tried in commodores, 3.07, 3.73, 3.89, 4.11, i like 3.9s in the autos
     
  3. enhancedss

    enhancedss New Member

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    3.9's are the best for the auto's and manuals.
     
  4. helicraze

    helicraze New Member

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    Avoid diffs off ebay also!
     
  5. BlueSteele

    BlueSteele Member

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    hey guys, got a 09VE SSv auto s/wagon. first off, want to let u know, Im not educated at all at performance upgrades to cars...(go-karts yes :) ) anyway, I want to get rid of the factory 2.9diff as personally it is shithouse gearing. Im going to get 3.46 HSV diff, now the workshop where I have been taking it (my intake & tune) quoted me $2500 installed for the HSV 3.46 iff. I have no idea on pricesing for these items. Does this sound about right? I rang a friend who can get me cost price on holden parts and he said the diff will cost me $1600. (add in instalation fee, then its about $200 all up) are they really that expensive? or is there a better diff going around that is better than HSV and im just paying for the name?
    cheers
     
  6. QldKev

    QldKev Member

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    $1600 seems on the money for the diff
    Holmart are $1550 for the shot peened 3.45 HSV Diff

    Installation ? say up to $400 (allow they need to adjust the computer for the new gearing to correct the speedo, if you want to fit it yourself)
    Allow $60-70 for decent oil
    Another $60 if they want to replace the bolts.


    QldKev
     
  7. BlueSteele

    BlueSteele Member

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    Thanks mate
     
  8. QldKev

    QldKev Member

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    One more expense, in my example you would need another up to $100 for delivery of the diff

    QldKev
     
  9. BlueSteele

    BlueSteele Member

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    $33 in Melbourne ;)
     
  10. QldKev

    QldKev Member

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    $90 to Qld from Vic :cry:
     
  11. DrZ

    DrZ New Member

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    Hey guys,

    Just a quick question, I want to get a set of 3.9s for my auto. I have been told by many not to try fitting them myself as its very likely I will get the install slightly wrong and it will whine like a bitch untill it basically dies.. Therefore I would need it to be prof installed and also to be recalibrated due to going to 3.9s

    Other then oils, do they really need to rebuild my diff? Everywhere I have asked for quotes they say they will NEED to put in new bearing new this an new that, cheapest I have been told is FROM $1200, thats with me bringing my own 3.9s to the table..

    I was expecting more like $400 max for total diff install and recalibration incl oils if I brought my own gears...

    any help or thoughts is most appreciated..

    Live in Perth btw...

    DrZ
     
  12. 1sttimeSS

    1sttimeSS New Member

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    Did you change the diff gears? If so what did you do and has it made it better? I've just inherited a series 1 VYSS auto and was thinking about changing diff gears for better acelleration (don't need to do 240km/h all that often).
     
  13. XRUFFX

    XRUFFX New Member

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    hi guys..i realise this thread hasnt been commented on for a while..but i need a little help.
    i have a SeriesII LS1 VT, and have been offered a pretty much brand new VP IRS LSD 3.46 diff out of a VP that HAS an Ls1 in it.
    will it...or can it be made to fit mine? i know its old and such..but its near on new and professionally built and mines clapped out. (currently running a vs ss lsd i discovered)
     
  14. njmartin

    njmartin Banned

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    being a series 2 vt mate theyre different.
    im think they may be able to be modified but not 100% positive..
    if i were in your position id be keeping a look out for either a diff from a manual ss, they have 3.46, or hsv manuals are 3.7, might only be in the z series though not entirely sure, but you can pick them up pretty cheap if you keep an eye out
     
  15. XRUFFX

    XRUFFX New Member

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    thanks mate i think ur prb right..il keep an eye out!
     
  16. torana355

    torana355 Member

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    That seems very expensive, i got my diff rebuilt for $1000 including the 3.46 gears. I got quoted $690 for just the rebuild without gears supplied.
     
  17. cpbait

    cpbait New Member

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    iv been quoted $1,000 supplying my own diff gears but then warranty is not guaranteed or $1,500-$1,700 with the diff place supplying the gears, that was for a full rebuild everything replaced, i asked for trade price and told them where i was from but they may have quoted me retail price.
     
  18. torana355

    torana355 Member

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    If you are in Sydney give D&R Diffs a call, ask to speak with Glen Barton. Top bloke and will be cheaper then what you have been quoted.
     
  19. Shen Long

    Shen Long New Member

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    Just out of curiosity if my WH Series 1 Caprice revs at 2000RPM @ 100KM/H & around 2100RPM @ 110KM/H what would my diff ratio be?
     
  20. QldKev

    QldKev Member

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    QldKev

    Is it auto or manual?

    QldKev
     

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