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

Drive/Driven Gears for 3.73's

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Old Dec 10, 2004 | 03:45 PM
  #1  
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
Drive/Driven Gears for 3.73's

Are these--7 tooth drive and 21 tooth driven--still available from GM? If not, any suggestions?

JamesC
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Old Dec 15, 2004 | 08:45 PM
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
the 7 tooth is still available. the 21 was discontinued several years ago. i found mine at some gm restoration place in chicago, ill try and find the info, otherwise, cruise the boneyards for some of the l69 ho cars that were 5 speeds, they all had 3.73s

ok, heres the part # for the 7 tooth, i think i paid 3 somethin at the dealer: 14071731

alright, i found the info, Chicago Auto Parts 630-771-0497, part #14090594 for the 21 tooth

Last edited by KagA152; Dec 15, 2004 at 08:58 PM.
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Old Dec 16, 2004 | 09:01 AM
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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
Thanks. I ordered from jmd (board member).

JamesC
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Old Dec 16, 2004 | 08:53 PM
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From: Eastpointe Michigan
Car: 87 IROC
Engine: mini-rammed 350
Transmission: WC T-5
The 7 tooth is the round Drive gear(inside trans housing)Right?
What color is it?do you remember
I bought a couple at the dealership,but i threw the bags out for some dumb reason
Any help would be great
Thanks
BTW..The guy in Chicago only has a phone# ?no e-mail?
Later
Steve
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Old Dec 16, 2004 | 11:46 PM
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
do a search for them, they have website, prolly an email on there, i just called em though
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Old Dec 17, 2004 | 06:36 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
I "believe" that the 7 tooth (drive) is purple and the 21 tooth (driven) is orange. I ordered both these gears as well as the sleeve from jmd. Might consider a search.

JamesC

Last edited by JamesC; Dec 17, 2004 at 07:09 AM.
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Old Dec 17, 2004 | 07:29 PM
  #7  
Brock's91RS's Avatar
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From: Eastpointe Michigan
Car: 87 IROC
Engine: mini-rammed 350
Transmission: WC T-5
Thanks for the help and info..I think I have the correct gears,the drive looks kinda purplish/blue...
Thanks again
Steve
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Old Dec 27, 2004 | 10:48 AM
  #8  
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From: Frederick, MD
Car: '86 Iroc, '87 Iroc Vert
Engine: 350 TPI, 305 TPI
Transmission: T5 in both
Axle/Gears: 3.73, 3.45 both LSD's
Thanks for the info guys. Its amazing what Searching can do. Its also nice to see other 3.73 gear drivers. Just to let you know Chicago Auto Parts Web Site is

www.chgoautopts.com

Thanks Again

Just called, he's out of stock of the 14090594

Last edited by OneBadZ4U; Dec 27, 2004 at 12:34 PM.
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Old Dec 27, 2004 | 01:53 PM
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
i might sell mine. im not sure what gear i want to put in the 9"
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