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

87 iroc with 3.73's, tranny gear question

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Old Mar 7, 2001 | 11:35 AM
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leirch's Avatar
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From: Lima, Ohio
87 iroc with 3.73's, tranny gear question

Ok, I need to get this speedo working properly, not only so i know how fast i'm going, i don't want 1297462198421 miles on my odometer.
Would it be possible to get all of the gears for an 85 l69HO that came with 3.73 gears? What all would i need? driven/tranny gears?

Thanks,

Brendan

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1987 IROC-Z L98,SuperRam,EB 6085's,LPE 219/219 Roller, Crane 1.6RR, EB TPI Base, 58mm TB, ADS 24#, AFPR, K&N, EB TES, Catco Cat, 3" Borla Cat-Back, Accel cap,rotor,distro/other crap, MSD 6AL, MSD Blaster 3, Aluminum DS, 94 Disk Rear, Adjustable Valve, Precision 3.73 Gears, Sub-Frame Connectors, Hotchkis Lower Control Arms, KYB Shocks/Struts, Suspension Techniques Lowering Springs, Polyurethan Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm,

To see the ROC, Check out the webpage Here
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Old Mar 7, 2001 | 02:42 PM
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Assuming you have an automatic, this info is in the FAQ on here.

15 tooth, and 45 tooth, for 3.73 gears.

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Old Mar 7, 2001 | 03:16 PM
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Nope, i have a T5, thanks for the Auto info. I found that info when doing a search. But the manual tranny info doesn't seem to be anywhere...

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Old Mar 7, 2001 | 06:58 PM
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From: Parkersburg, IA, U.S.
Car: Trans Am
Engine: L69
Transmission: T5
Axle/Gears: 3.73
Everyone says 7 and 21 for t5 and 3.73.. Go to www.hanlonmotorsports.com They have a calculator...Kevin
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Old Mar 7, 2001 | 10:08 PM
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From: Lima, Ohio
Kevin,
Thanks, i'll check it out!
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