Hey guys,

I jus bought a new gearbox and diff. Gearbox is standard gc8 5spd but diff is 4.11 gc8 sti. will they match?

cheers

Check the final drive by looking up the transmission code. It is on a white sticker on the gearbox bell housing.

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cant seem to find this anywhere? i know my old gc8 had a version 6 gearbox in it and a standard 3.9 diff in it and ran fine, so would the other way around be likewise? thanks for your reply

also is the box Jdm or aussie? makes i difference i found

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96 V2 WRX sedan future track car
[COLOR="DarkSlateBlue"]Barbs Short:[/COLOR][COLOR="Red"]DNS[/COLOR]
[COLOR="DarkSlateBlue"]Barbs Long:[/COLOR][COLOR="Red"]DNS[/COLOR]
[COLOR="DarkSlateBlue"]Top Speed:[/COLOR][COLOR="Red"]Depends on how fast I can push it[/COLOR]

05 WRX wagon daily driven

gearbox is aussie but diff is off a vers.6?

If there is no sticker. And hopefully no oil in the box...

turn the box upside down and remove the oil drain plug. shine a torch in there. You should be able to see the front crown wheel. Mark a tooth with a paint marker. And start turning the front shaft stubs and count the teeth.

39 teeth = 3.9 box (but you'll also need to check if it has a step down or not in the transfer case)
37 teeth = 4.11 box

40 teeth = 4.44 box

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RS Liberty - Because WRX's are only good for parts...

all GC8 STI's are 4.44 rear ratio not 4.11

GC8 WRX uses 1.1 drop gears in the transfer case & uses 3.9:1 front diff & 3.54:1 rear.

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[CENTER][SIGPIC][/SIGPIC][/CENTER]
[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

Only V3/4/5/6 STI are 4.44

V1/2 STI are 4.11

and V1/2 STI-RA is 3.9

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RS Liberty - Because WRX's are only good for parts...

Sorry I was only talking Aus cars as they were implied.

Ra's had 4.11 or 4.44 too.

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[CENTER][SIGPIC][/SIGPIC][/CENTER]
[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

sorry mate your rite my mistake i meant 4.44.
so can anyone confirm if a v6 gearbox will work with a gc8 wrx rear diff?