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Thread: Diff gear Question

  1. #1
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    Default Diff gear Question

    Does anyone know what the diff ratio is in the standard VZ Exec sedan v6 auto? Wanna put an LSD diff in it and not sure weather to keep the same ration or change it.
    If i end up changing what should i change it to? not building a race car just wanna give it a bit more of a kick.

    Sorry dont know much about diffs

    cheers james
    2005 VZ Alloytec Sedan, 3.46 LSD, 19" BSA alloys, 2.25 twin xforce system Build Thread
    1997 VS L67 Ute *SOLD*
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  2. #2
    richardpalinkas's Avatar
    richardpalinkas is offline Blown Alloytec
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    Standard is 3.08:1, a good upgrade is the 3.46:1 ratio usually found in manual ss commodores so it should be fairly easy to find one


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  3. #3
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    There is usually a few LSD 3.46's floating around on ebay at any one time and most are LSD as they come out of V8's, HSV and SS's.
    3.46 is probably the best ratio for a stock to lightly modified V6 as it gives it kick without really hurting fuel ecomomy, in fact around town it usually gets better once you stop enjoying the new found squirt.
    Highway fuel economy stays pretty much the same.

  4. #4
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    Quote Originally Posted by Surfwagon View Post
    There is usually a few LSD 3.46's floating around on ebay at any one time and most are LSD as they come out of V8's, HSV and SS's.
    3.46 is probably the best ratio for a stock to lightly modified V6 as it gives it kick without really hurting fuel ecomomy, in fact around town it usually gets better once you stop enjoying the new found squirt.
    Highway fuel economy stays pretty much the same.
    What are the rev differences between stock and 3.46? And how much does it affect acceleration?

  5. #5
    richardpalinkas's Avatar
    richardpalinkas is offline Blown Alloytec
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    My 1/4 mile changed by .2 seconds, but 0-100 was about half a sec quicker, that's with an sv6


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  6. #6
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    When you changed your diff who recalibrated your speedo or how'd you do it?

  7. #7
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    Quote Originally Posted by morphix View Post
    What are the rev differences between stock and 3.46? And how much does it affect acceleration?
    At 100kph difference is about 200 revs more with 3.46 and you will notice the extra punch from the 3.46's.

  8. #8
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    I know the computer will have to be calibrated but if i replace a 3.08:1 with a 3.46:1 will it bolt straight in or will some things have to be changed to make it fit?
    2005 VZ Alloytec Sedan, 3.46 LSD, 19" BSA alloys, 2.25 twin xforce system Build Thread
    1997 VS L67 Ute *SOLD*
    WTB: HSV/SSZ Brake calipers
    WTB: VZ HBD Body lip

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  10. #10
    richardpalinkas's Avatar
    richardpalinkas is offline Blown Alloytec
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    I took my car to Holden and they recalibrated it for 60 bux


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