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GT4 Option Code?

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Old 02-28-2006, 10:34 AM
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GT4 Option Code?
I was in the boneyard and saw a car with the GT4 rear axle code on the RPO sticker. I think it was an 86 T/A if that helps. I've never seen this code for a rearend before. Does anyone happen to know what ratio it designates, and if it was a nine or a ten bolt? Thanks.
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Old 02-28-2006, 11:09 AM
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Car: 1987 Camaro Z-28
Engine: 6.3L Victor EFI
Transmission: Tremec TKO 600
Axle/Gears: Moser 9"/4.11 Trac-Lok
GT4 = 3.73 ratio
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Old 03-01-2006, 12:49 AM
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Hmmmm, that makes sense. That's probably why I haven't seen that code too much since factory 3.73's are fairly rare. Thanks for the reply Rick!
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