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Thread: Diff swap to sedan

  1. #21
    SL/ENUT's Avatar
    SL/ENUT is offline The SL/E Fanatic!
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    Quote Originally Posted by ajvx01 View Post
    So what I'm hearing is I can fit a vk wagon diff to my vc sedan?
    No, you can't. No wagon diffs fit easy into any sedans
    Cheers Damien"SL/ENUT" Smith, The SL/E Fanatic!
    A lucky owner of 2 SL/E Commodores, a rare VB SL/E and a 2 tone VC SL/E. Just need a VH SL/E and have the set!

  2. #22
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    Default Diff swap to sedan

    Aussie v8- you don't have voices in your head? You should get that looked at bro the ones in my head assure me it's normal

    Sl/enut- yea that's what I thought but this thread was seeming to disagree. Only asked as there's a few bargains on gumtree currently!
    Wanting to trade electrical work for paint and panel work.

  3. #23
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    i dont know how you can say no wagon diffs fit easy into sedans because in my experience they fit fine and to change shock mounts is 10 minutes with a grinder and a welder or you can do what i did and push the rubber with the steel tube out of the sedan shocks and put wagon rubber in it and leave the wagon shock mount there wroked a treat for me even lowered with 8" rims and big tyres.

  4. #24
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    Quote Originally Posted by 180sc View Post
    i dont know how you can say no wagon diffs fit easy into sedans because in my experience they fit fine and to change shock mounts is 10 minutes with a grinder and a welder or you can do what i did and push the rubber with the steel tube out of the sedan shocks and put wagon rubber in it and leave the wagon shock mount there wroked a treat for me even lowered with 8" rims and big tyres.
    From memory the early wagon diffs are wider than the VL sedan diffs. I haven't got a VL manual (apart from the Walkinshaw Group A manual that is) so I can't provide measurements. What I do know is on my car (VC SL/E of Bertie Street origin) I'd be hard pressed putting a VL diff with the Irmschirs and 225/60 tyres without the tyres rubbing on the bodywork. I know when towing the tyres can rub with the OEM diff so it will be much worse with a Wagon or VL diff.

  5. #25
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    SL/ENUT is offline The SL/E Fanatic!
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    Quote Originally Posted by 180sc View Post
    i dont know how you can say no wagon diffs fit easy into sedans because in my experience they fit fine and to change shock mounts is 10 minutes with a grinder and a welder or you can do what i did and push the rubber with the steel tube out of the sedan shocks and put wagon rubber in it and leave the wagon shock mount there wroked a treat for me even lowered with 8" rims and big tyres.
    Probably doing that, over time would do a lot of damage on the top shock points etc. As for welding bits on diff, not sure if its a ok able.

    If you really want to, you could use the wagon diff housing, remove the wagon axles tubes, put sedan ones in etc. Wouldn't be easy or cheap to do though
    Cheers Damien"SL/ENUT" Smith, The SL/E Fanatic!
    A lucky owner of 2 SL/E Commodores, a rare VB SL/E and a 2 tone VC SL/E. Just need a VH SL/E and have the set!

  6. #26
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    Quote Originally Posted by Aussie V8 View Post
    From the Holden, not Gregory's etc., workshop manual.
    VB Commodore: Tread (Rear)
    8VK69 1417mm
    8VL69 1417mm
    8VX69 1422mm

    VC Commodore: Tread (Rear)
    8VK69 1416mm (Drum)
    8VL69 1416mm (Drum)
    8VK69 1424mm (Disc)
    8VL69 1424mm (Disc)
    8VX69 1422mm

    8VK35 1440mm (Drum)
    8VL35 1440mm (Drum)
    8VK35 1447mm (Disc)
    8VL35 1447mm (DIsc)

    VH Commodore: No entry in the manual so it is no different to the VC.
    VK Commodore: I haven't got a genuine manual on these (yet) but from memory (I did my apprenticeship on these things) there wasn't any difference at all apart from some later VKs come out with the VL type BW.
    Those measurements are wheel tracks?,do you know if there is any variation between wagon and sedan wheel offsets?. Plus wheel track measurements aren't that accurate to be worried about 1mm are they?

  7. #27
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    Quote Originally Posted by Guzzoline addict View Post
    Those measurements are wheel tracks?,do you know if there is any variation between wagon and sedan wheel offsets?. Plus wheel track measurements aren't that accurate to be worried about 1mm are they?
    You are very perceptive.

    There is no difference in wheels from VB to VK not sure about VL, apart from being 13" for 4 cylinder, 14 inch for normal wheels and 15 for Alloys etc. The point is the VB Diff is not the same as the later VC-VK diffs, which are different again to VL diffs. I mentioned this because another poster mentioned he heard there were 3 different sizes, I then gave information from the manufacturers workshop manual to support that. We, as individuals, may not think it is worth worrying about but GMH certainly thought it was worthy of writing it down in the official workshop manual.

    I don't know what state your in so I'll just go off NSW rego rules. When doing a rego check for road worthyness track is part of the check and they give measurements. Outside of those measurements by 0.5 of a mm and you will be knocked back by an RTA inspector, I have never seen an Authorised examiner yet knock it back but an RTA inspector will.

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