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

3.08 to 3.73 drive/driven gears

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Old Feb 25, 2008 | 06:34 PM
  #1  
89TXIroc's Avatar
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Joined: Oct 2007
Posts: 36
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From: Houston, TX
Car: 89 IROC 5.7
Engine: 357
Transmission: T-56
Axle/Gears: 3.73
3.08 to 3.73 drive/driven gears

Ok, so ive been over the net a few times and not a whole lot can compensate for the different tire size and the gear swap... so im looking for the drive/driven gears....

Original:
215/65-R15
3.08 gears

Now:
245/50-R16
3.73 Gears

Thanks in advance guys!
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Old Feb 25, 2008 | 08:38 PM
  #2  
WIll36's Avatar
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Joined: Dec 2005
Posts: 383
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From: NY
Car: 88IROC, 91Z28 + parts cars
Engine: 355, 408
Transmission: T56
Axle/Gears: 3.42 LS1, 9" w/ 4.56 and spool
Re: 3.08 to 3.73 drive/driven gears

are you looking to correct the speedometer for the new tires and gearing change? If so theres a company called the gear box that I went through to get an adapter to adjust mine.
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Old Feb 26, 2008 | 12:19 AM
  #3  
89TXIroc's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2007
Posts: 36
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From: Houston, TX
Car: 89 IROC 5.7
Engine: 357
Transmission: T-56
Axle/Gears: 3.73
Re: 3.08 to 3.73 drive/driven gears

Yes I am looking for both, could you provide a link to this company?

Also, does anyone know if the 7/21 drive/driven gears would be close...

right now I have a 9 tooth gear.
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Old Feb 26, 2008 | 05:42 AM
  #4  
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
Re: 3.08 to 3.73 drive/driven gears

You may find some helpful info in the sticky at the top of the page (including how to swap out the drive gear).

JamesC
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