cobra differential? - TCCoA Forums
 
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post #1 of 15 (permalink) Old 04-21-2004, 12:42 AM Thread Starter
 
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cobra differential?

can i swap the whole differential from an 03 cobra into my 89 supercoupe?
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post #2 of 15 (permalink) Old 04-21-2004, 02:01 AM
 
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I don't think the splines would match up, the Cobra has 31 spline and the MN12 is 28 spline.
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post #3 of 15 (permalink) Old 04-21-2004, 06:49 AM
 
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I did it, but I had to have the side gears swapped out
from 31 spline to 28 spline.

Mike Donley
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post #4 of 15 (permalink) Old 04-21-2004, 07:34 AM Thread Starter
 
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how do i swap them? where can i get them?
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post #5 of 15 (permalink) Old 04-21-2004, 08:59 PM
 
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Quote:
Originally posted by 89sc5spd
how do i swap them? where can i get them?
It involves taking the differential apart, so I would have a dealer or
a shop do it. The side gears would have to be purchased from a
dealer or someone who sell reart end parts. They must be IRS side gears,
because they have groove machined in them to allow the circlip on the
end of the axles to snap in.

Mike Donley
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post #6 of 15 (permalink) Old 04-21-2004, 10:27 PM
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Would it be easier to create a set of hybrid half-shafts that have the 28 spline Tbird hub style on one end and the 31 spline Cobra IRS style on the other? Or is that going to be more money?

Josh Keady

1994 Super Coupe ('93 5.0L swap), 1990 Tbird 3.8L, 1982 Honda CB900F, 1972 F-100 SportCustom 4x4, 1970 Chevy Custom Camper / 20
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post #7 of 15 (permalink) Old 04-21-2004, 10:33 PM
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I'm pretty sure a "bolt on" (thats what the side gear change sounds like) is gonna be less expensive than having custom shafts made.

math > pasta
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post #8 of 15 (permalink) Old 04-22-2004, 05:46 AM
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Look at the group purchases. There is a GP going on that will have the 31 spline inners and the 28 spline outers.

1997 LX Sport 4.6L 2.73 , MODS=SCT tuned/J-Mod/Trans Cooler/Dyno max Cat-Back/NgkPlugs/Mac cold air/March UD's/FRPP aluminumcarrier3.73's(spare for strip use)/ PI cams + PI intake manifold w/adapter plate/ Mark VIII Convertor/80mm L-Maf/70mm TB/ Mark VIII 1 piece shaft/Cobra R' wheels/ Kumhos 235/60/16 - White leather w/ blue cloth seats - white face gauges in 95 cluster
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post #9 of 15 (permalink) Old 04-22-2004, 05:56 AM
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if you want a cobra one get a 99 or 01 diff.

-Orlando

friends don't let friends drive Chevy
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post #10 of 15 (permalink) Old 04-22-2004, 06:00 AM
 
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I thought it was only the 99's that had 28 splines, and that after 99 they changed to 31?
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post #11 of 15 (permalink) Old 04-22-2004, 06:13 AM
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i do believe it was in 03 if i am not mistaken

-Orlando

friends don't let friends drive Chevy
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post #12 of 15 (permalink) Old 04-22-2004, 06:36 AM
 
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Not to argue here, but refer to this thread

http://forums.tccoa.com/showthread.p...threadid=11296

It's said that only the 99's have the 28 spline side gears
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post #13 of 15 (permalink) Old 04-22-2004, 07:31 AM
 
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'99 only had 28 spline. If you get one cheap, and need the side gears, Call Dan, he found the side gears for Ozzman, I think they cost $70 though.
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post #14 of 15 (permalink) Old 04-22-2004, 09:14 AM
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I just asked my friend who has a 01 Cobra, and Green95lx you were right, I stand corrected

-Orlando

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post #15 of 15 (permalink) Old 04-22-2004, 10:01 AM
 
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Hehe, It's all good. We all do it, from time to time.
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