[Main C900 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos Let me add to this.........tranny serial #'s to 1985 Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by DougM [Email] (#211) [Profile/Gallery] (more from DougM) on Wed, 14 Nov 2001 16:48:39 In Reply to: Re: Tranny differences once and for all..., Aaron Govatos, Wed, 14 Nov 2001 15:28:47 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

1979-1983--serial number designations
type(G=manual)1st digit
version(engine combination)2nd digit
number of forward gears-3rd digit
primary gear ratio(see below)-4th digit
variant(stage of development)5th digit

1984 models onward
GM=manual tranny-1st digits
GA= auto tranny-1st digits
transmission version-2nd digit
number of forward gears-3rd digit
primary gear ratio(see below)-4th digit
variant(stage of development)5th digit

Gear ratio numbers-manual trannies:
serial number of '4' = 31/30(number of teeth,input/output gear),0.97(ratio)
ser # of '5'=30/27(teeth, input/output gears), 0.90(ratio)
ser # of '6'=31/26(teeth, input/output gears), 0.84(ratio)
ser # of '7'=32/25(teeth, input/output gears), 0.78(ratio)

1979 900's gearbox designations
900 base (G34402)
900T (G44602)
1980 900 designations
900 base 4sp(G34402)
900 5sp(G45702) turbo and non-turbo
1981 900 designations
900 base(G34504 and G45704)
900T (G44604 and G45704)
1982 designations
900 base(G34406 and G45606)
900T (G45606)
1983 designations
900GL(G34406)
900GL,GL5,turbo(G45606)
900GLi,EMS,GLE(G45706)
1984 designations
all models(G34506)
GL,GLs,GLE,GLi,(G45706)
i,EMS,turbo(G45606)
1985 designations
GL,900,Turbo(GM34506)
turbo16(B202)(GM45706)

Good thing I don't have more info cause I don't think I would ever get done.

posted by 24.51.7...

• Tranny differences once and for all..., Jeff Cunningham, Wed, 14 Nov 2001 14:45:45
  • Tranny Information Page is UP..., Jeff Cunningham, Thu, 15 Nov 2001 10:23:57
  • Plug, SDP, Thu, 15 Nov 2001 06:43:29
    • My '91 900S do not have a plug.(nm), JustinHiFi , Thu, 15 Nov 2001 08:59:10
      • Must have had extra parts laying around for mine. I, SDP, Thu, 15 Nov 2001 13:23:07
  • Re: Tranny differences once and for all..., Yaofeng, Wed, 14 Nov 2001 17:33:08
  • Opening up a can of worms,Aay. >>>>, Anders, Wed, 14 Nov 2001 16:10:39
    • I think Jeff wants to open up a can of whoop a$$, Quinn S. Kurz, Wed, 14 Nov 2001 17:13:39
  • Re: Tranny differences once and for all..., IrieTom , Wed, 14 Nov 2001 15:52:56
  • Re: Tranny differences once and for all..., Aaron Govatos, Wed, 14 Nov 2001 15:28:47
    • Let me add to this.........tranny serial #'s to 1985, DougM , Wed, 14 Nov 2001 16:48:39 <-- Viewing This Message

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