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Old 02-13-2001, 10:26 AM   #1
Strepto
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Member#: 252
Join Date: Sep 1999
Location: San Antonio, TX
Vehicle:
2001 Arctic White
Camaro SS #1800

Question MY99+ tranny on a MY98?

I'm posting this for a friend the tranny on his MY98 RS is pretty much fried. The TO bearing has worn a nice groove in the housing (and something else is wrong with it). Apparently this is something common with the MY98 trannies, but I've never seen anyone post about it here.

Is it possible to use an MY99+ tranny on an MY98? I know the bolt patterns for the trannies are different, but can it be done?

thx,
Strep
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Old 02-13-2001, 11:18 AM   #2
efoo
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it's a direct bolt-on. just use it.

Oh, you don't need to re-install the little spring that pulls your shifter back towards center though. The MY99 trannies don't need it.

That said, if I could have that spring since you don't need it, I'd appreciate it. I just moved to a turbo tranny and I need that spring - my shifter just flops to one side and doesn't want to stand up anymore.

-Edwin
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Old 02-13-2001, 11:21 AM   #3
ColinL
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I am pretty sure you want a 99-up center differential as well.
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Old 02-13-2001, 04:16 PM   #4
Strepto
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bump
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Old 02-14-2001, 10:54 AM   #5
Joel Gat, 1.8L
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Hello,

Perhaps I'm confused. You have a worn throwout bearing (which is quite normal, time for a new clutch) and you want to replace the tranny? What's the connection? What will that do for you that a new clutch (which you'll need to get anyway) won't do?

If you want to replace it, then yeah, unbolt the '98 4-bolt tranny and bolt in a 99+ 7-bolt tranny. 4 of the bolt holes match up, 3 don't - you just leave those 3 open. Well, there's also the matter of the starter motor, which will bolt on if you sink a bolt into the appropriate hole since the starter expects a stud on the tranny and new trannies use a stud from the engine. It's a very easy transfer, as far as tranny swaps go.

But I am still unsure why you'd do that if all you have is a worn clutch and bearings. Replace the clutch disk, the pressure plate, the pilot bearing, and the throwout bearing and be done with it.

Oh yeah, and re the center diff - no one really takes the trannies apart - just get a tranny that has a center diff still attached.

Joel
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Old 02-14-2001, 11:06 AM   #6
Strepto
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Joel, I really don't know all the details. The shop my friend took his RS to said there was probably a deeper problem in the tranny so he figures just replace the whole thing.

Thanks for the info on the housings and the starter.
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