Transmissions and Drivetrain Need help with your trans? Problems with your axle?

G92 axle

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Old Oct 1, 2005 | 07:33 PM
  #1  
3rdgen92maro's Avatar
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From: Fairchild AFB, Wa/Oviedo FL
Car: 1995 Firebird Formula
Engine: LT1
Transmission: Th350/4k stall
Axle/Gears: 10 bolt with 3.42s
G92 axle

just wondering i have a 91 z28 and have a rpo code for G92 axle does anyone know what gear ratio this is. thanks
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Old Oct 1, 2005 | 09:15 PM
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Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
G92 is not a specific ratio. It does not, and has never referred to a specific numeric ratio.

G92 is an optional final drive rear axle ratio. I.E. if 2 ratios were available, the numerically higher ratio (3.73 rather than 3.23) would carry that RPO.

Now look through your other G _ _ codes and look up the one for the rear gear ratio.
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Old Oct 2, 2005 | 12:18 PM
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From: Fairchild AFB, Wa/Oviedo FL
Car: 1995 Firebird Formula
Engine: LT1
Transmission: Th350/4k stall
Axle/Gears: 10 bolt with 3.42s
there is another RPO it is G80. if this helps at 60mph its running about 2250 RPM
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Old Oct 2, 2005 | 12:29 PM
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DJP87Z28's Avatar
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Car: 1987 Black IROC-Z (SOLD)
Originally posted by 3rdgen92maro
there is another RPO it is G80. if this helps at 60mph its running about 2250 RPM
Now if you found the codes. G80=Limited Slip rear, another rpo code will tell you the gear ratio starts with a Gu???
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Old Oct 2, 2005 | 12:57 PM
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From: KY
Car: 1991 FORMULA
Engine: ZZ4 + LT4 HT CAM 430HP
Transmission: 700-R4 COMING T56
Axle/Gears: 9" 4.56's (COMING)
huh?

isn't the code gw6 the 9 bolt posi 3.27 ratio?
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Old Oct 4, 2005 | 07:43 AM
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3rdgen92maro's Avatar
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From: Fairchild AFB, Wa/Oviedo FL
Car: 1995 Firebird Formula
Engine: LT1
Transmission: Th350/4k stall
Axle/Gears: 10 bolt with 3.42s
the other code is GU5
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Old Oct 4, 2005 | 11:00 AM
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Originally posted by 3rdgen92maro
the other code is GU5
If I am not mistaken GU5 is a 10-bolt 3:23 ratio which would go with a G92 and a 350 TPI options.

Last edited by DJP87Z28; Oct 4, 2005 at 01:03 PM.
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