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Reload this Page 87 GTA question

History / Restoration Got a question about Third Gen (1982-1992) Camaro or Firebird history? Where can I find these original parts? What is this option or RPO code? Those questions, answers, and more!

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Old 04-04-2004, 03:28 PM   #1
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87 GTA question
My 87 GTA has a nine bolt rearend, did 87 GTA's get those or did someone put that in themselves? It doesn't look like a transplant but I don't know when the nine bolts were used, thats why I am asking. Thanks in advance!
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Old 04-04-2004, 03:32 PM   #2
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Its more than likely original.
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Old 04-04-2004, 06:06 PM   #3
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oh cool. Thanks.
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Old 04-04-2004, 07:00 PM   #4
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As specified elsewhere on this site, the 9 bolt was optional on the 1986-1989 F-body cars...

So it probably is original...
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Old 04-04-2004, 11:28 PM   #5
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The 9 bolt actually first appeared in 1985.
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Old 04-05-2004, 02:01 AM   #6
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Yep, most likely original. If your car is an automatic then your ratio should be 3.27:1.
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Old 04-05-2004, 10:55 AM   #7
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Has there ever been anyone on Thirdgen with an original 85 9 bolt? I knew it was optional, but didn't think it was really out there...

Or is it more common than I think? I thought the 86 9 bolts were pretty rare and that it wasn't common until 87...
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Old 04-05-2004, 11:02 AM   #8
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Quote:
Originally posted by 88TPI406GTA
Has there ever been anyone on Thirdgen with an original 85 9 bolt? I knew it was optional, but didn't think it was really out there...

Or is it more common than I think? I thought the 86 9 bolts were pretty rare and that it wasn't common until 87...
When I had my 84 HO, a buddy of mine had an 85 HO IROC that had one. Both cars were 5spd.
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Old 04-05-2004, 01:09 PM   #9
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My cousin has a 85 T/a with the B/W 9bolt. His car was a L69 car. The gears are 3:73's.
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Conrad

Oh, his car is a 5speed also.
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Old 04-05-2004, 01:25 PM   #10
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Firebirds were using the 9-bolt rears before the Camaro.
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Old 04-05-2004, 02:43 PM   #11
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[quote]Originally posted by twobirds
[b]My cousin has a 85 T/a with the B/W 9bolt. His car was a L69 car. The gears are 3:73's.
Laters,
Conrad



You are sure that it had a 3.73 stock? And not like a 3.70 or something...I thought factory 3.73 was only a 10 bolt deal then. I know that 3.73 BW gears exist now...
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Old 04-05-2004, 10:22 PM   #12
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I owned one many moons ago, had the highway gear (2.77?). When I bought the car I had to go and service the thing (you know, oil, coolant, trans fluid, rear diff) and found out the hard way that not too many people had parts for them. Had to order the diff gasket from the dealer.
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Reload this Page 87 GTA question
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