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    Thread: Early Omni 4Speed --- it IS a VW 020 box -- proof inside

    1. Member
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      02-07-2008 12:28 AM #1
      This trans was pulled from an early VW powered Dodge Omni.
      i believe that this is the A412 (dodge number) but am not posative.
      see the different drive flange. just swap out a VW drive flange and you have an operable 4spd. (not that anyone but racers really want a 4spd anyway )

      up next: splitting the case to see what gears came in them. 1st thru 4th. Hopefully, there are some different 2nd and 3rd gears that weren't available in the VW line.
      i have heard that the R/P is a 3.42 which is NOT available in any VW.
      I also just purchased an Omni R/P that is also supposed to be from an early omni. i counted the teeth tonight and found the ring gear to have 74 and the pinion to have 20 = 3.70. so, maybe there is another R/P combo.
      feel free to chime in.
      Craig
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    2. Member Broke's Avatar
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      02-07-2008 07:38 AM #2
      Nice [IMG]http://*****************.com/smile/emthup.gif[/IMG]
      100mm flange? It looks like a VW 100mm flange, just drilled for the Omni axles.
      Get more pics
      Broke
      020 trans info pages - www.BrokeVW.com
      NEW 0.7619 5th gears for the 020
      NEW 020 reverse gears
      '86 GTI 8V 2.0L -'88 Scirocco 16V - '10 F150 4x4

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      02-07-2008 11:21 PM #3
      1st Gear: 38/11 =3.455
      2nd Gear: 35/18 = 1.94
      3rd Gear: 36/28 = 1.29
      4th Gear: 31/32 = .97
      These are the same 2nd thru 4th of a GC
      R/P => 73/21 = 3.48 [IMG]http://*****************.com/smile/emthup.gif[/IMG]
      Trans Code:



      Modified by Shrttrackr at 9:00 PM 2-18-2008
      Check out my Ebay auctions for Earl's Performance Braided Hose ends - NOS pieces for 50-60% the price of new. My Ebay Auctions

    4. Member
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      02-07-2008 11:38 PM #4
      BEFORE anyone says that i am getting the internals dirty ---- i took the back plate off the trans and found a bunch of debris so i pretty much concluded that the trans was useless. hopefully, the R/P are still OK.




      Check out my Ebay auctions for Earl's Performance Braided Hose ends - NOS pieces for 50-60% the price of new. My Ebay Auctions

    5. Member austin neuschafer's Avatar
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      02-07-2008 11:39 PM #5
      interesting, I always wounderred about this after hearing they used vw motors, and also that they looks very similiar to the rabbits
      87 rocco 2l16v MS3 02a/j with 4.24 on LSD. 91 rado geting 1.8t, 02 cabrio geting vr6, 04 r32 vf stg 2 sc, and a few other goodies

    6. Member Broke's Avatar
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      02-08-2008 03:27 AM #6
      Quote, originally posted by Shrttrackr »
      the Ring gear has 73 teeth and i have not torn down enough to count the pinion gear.
      But 73 is not anything that VW has listed as a R/P.
      hopefully, this one is the 3.42 R/P. [IMG]http://*****************.com/smile/emthup.gif[/IMG]

      It won't be a 3.42 with a 73T ring gear, 3.48 is about as close as it could get...

      73/22 = 3.32
      73/21 = 3.48
      73/20 = 3.65
      73/19 = 3.84
      73/18 = 4.05
      73/17 = 4.29
      73/16 = 4.56
      73/15 = 4.87
      Yeah, 4th sync looks shot and chewed up.
      It sure looks like a VW trans to me though, thanks for the pics!
      Oh, when marking the teeth like that for counting, I mark every 10th tooth.... count out 10 teeth, mark the 10th one, then the 20th, and the 30th and so on... because I always manage to loose my place. I just back up and won't lose any more than 10 in my count. The marks can be counted quickly spread out every 10 teeth like that as well. [IMG]http://*****************.com/smile/emthup.gif[/IMG]
      Broke
      020 trans info pages - www.BrokeVW.com
      NEW 0.7619 5th gears for the 020
      NEW 020 reverse gears
      '86 GTI 8V 2.0L -'88 Scirocco 16V - '10 F150 4x4

    7. Member
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      02-08-2008 07:16 PM #7
      Hey Broke,
      I realized that my math was incorrect after i posted and just didn't feel like changing it.
      as for the drive flanges, they are not 100mm but i have not measured them exactly yet. i'll do that tonight as well as post the remaining gear ratios and trans codes.
      i mark every tooth as i loose concentration if i do not.... i think i have ADD....
      i'm posting this so you can update your trans site and be the ONLY site to have the OMNI/VW trans info. [IMG]http://*****************.com/smile/emthup.gif[/IMG]


      Modified by Shrttrackr at 6:17 PM 2-8-2008
      Check out my Ebay auctions for Earl's Performance Braided Hose ends - NOS pieces for 50-60% the price of new. My Ebay Auctions

    8. Member
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      02-15-2008 11:09 PM #8
      updated R/P
      Check out my Ebay auctions for Earl's Performance Braided Hose ends - NOS pieces for 50-60% the price of new. My Ebay Auctions

    9. Member
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      02-18-2008 10:00 PM #9
      updated 1st gear and posted photo of trans code.
      Check out my Ebay auctions for Earl's Performance Braided Hose ends - NOS pieces for 50-60% the price of new. My Ebay Auctions

    10. Member
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      02-18-2008 10:07 PM #10
      also, i found a mopar r/p set on ebay a while back. bought it for a whopping 10.99 (including shipping) and it turns out to be a 3.70 --- 74 R/ 20P.
      looks like the same vw R/P but i have yet to examine to make sure.
      Check out my Ebay auctions for Earl's Performance Braided Hose ends - NOS pieces for 50-60% the price of new. My Ebay Auctions

    11. Member cabrlicious's Avatar
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      11-26-2010 09:48 PM #11
      are the omni CVs similar to VW cvs?

    12. Member B4S's Avatar
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      11-26-2010 10:31 PM #12
      Regular Omni gearboxes (that came from the 2.2/2.5) had slip-in/clip-in axles. The 1.7 is the only one that had the bolt-on CVs, and that was only on the manual boxes. The A404 automatic had clip-ins. Had one of those years back .
      1984 Volvo 244 DL...with carb.

    13. Semi-n00b
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      12-10-2010 04:51 PM #13
      Another interesting tidbit about the VW/Chrysler parts sharing. As was mentioned above, Chrysler used VW motors in the Omni. They also used a VW motor in postal jeeps for a few years as well. And what is interesting about postal jeeps? They are rear wheel drive. They use a mopar 3 speed auto tranny (torqueflite 727 if I'm not mistaken) with a bellhousing that bolts to a VW motor.

      Anyone up for making a sweet drag car?

    14. 09-29-2011 07:46 PM #14
      Does anyone have the part numbers for the 4.5 and 4.8 Omni ring and pinions? Would they work in a 5-speed 020 box?

    15. Member
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      10-25-2011 10:41 PM #15
      The omni R/P are out of 4 speeds. they will not work in a 5 speed.

      they ratios available from the Omni/VW trans are 3.70 (unsure of the trans code) and 3.48 (code GM).

    16. 11-19-2011 12:51 AM #16
      thats pretty interesting. Wasnt there a version of the omni nick named the "coyote? because it ate rabbits. Wondering if this trans goes to the same car?

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