Pontiac Firebird 1967-2002 Birds of a feather flock together

anyone know?

Old 07-05-2011, 01:36 PM
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I have a 2000 t/a anyone know the stock gears in the rear?
Old 07-05-2011, 01:41 PM
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Check the RPO label on the drivers front door, you should see a GU(x) code. GU2 is the 2.73 gears, GU5 is the 3.23, and GU6 are the 3.42s.
Old 07-05-2011, 05:14 PM
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Originally Posted by LunarWillow
Check the RPO label on the drivers front door, you should see a GU(x) code. GU2 is the 2.73 gears, GU5 is the 3.23, and GU6 are the 3.42s.
Niceeee Ty sir!!
Old 07-06-2011, 08:09 AM
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My '99 T/A with auto came with 2.73's. I went to 3.42"s.
Old 07-06-2011, 09:49 AM
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Originally Posted by Paul Bell
My '99 T/A with auto came with 2.73's. I went to 3.42"s.
mine are 3.42's, now i just need to figure out what size tire to run!


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