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

Are These T-5 Speedo Gear Combos Correct?

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Old Jan 5, 2005 | 11:30 AM
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JamesC's Avatar
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Are These T-5 Speedo Gear Combos Correct?

3.23 = 7-tooth purple/blue and 18 tooth brown
3.42 = 7-tooth purple/blue and 19-tooth white
3.73 = 7-tooth purple/blue and 21-tooth red

JamesC

Last edited by JamesC; Jan 8, 2005 at 08:45 AM.
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Old Jan 5, 2005 | 11:48 AM
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Car: '91 Z28 convertible
Engine: TPI
Transmission: T5
Axle/Gears: 3.27 posi disc
That's correct. However, you will have a very hard time finding this driven gears. They are not common. 19 and 22 are common, the rest is pretty rare.
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Old Jan 5, 2005 | 12:03 PM
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JamesC's Avatar
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Here's a link that provides some part numbers for driven gears:

https://www.thirdgen.org/techbb2/sho...ghlight=345215

By the way, a ran the part #'s provided in the link at GMPartsdirect, and all were good numbers.

JamesC

Last edited by JamesC; Jan 5, 2005 at 02:14 PM.
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Old Jan 5, 2005 | 12:07 PM
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JamesC's Avatar
Thread Starter
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25 Year Member
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Joined: Aug 1999
Posts: 19,282
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
If anyone can add to the list in any way, please do.

JamesC
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