Gears & Axles Driveshafts | Rearends | Differentials | Gears | 12 Bolt | 9 Inch | Dana

Gearing on 2002 Trans Am

Thread Tools
 
Search this Thread
 
Old Nov 9, 2005 | 09:14 PM
  #1  
nathanh240's Avatar
Thread Starter
Teching In
 
Joined: Sep 2005
Posts: 1
Likes: 0
From: Amarillo, Tx
Default Gearing on 2002 Trans Am

I'm very new to the trans am world. I purchased a 2002 TA and have been comparing rpm and mph with other TA owners. My car runs 2000 rpm at 70 mph. Does anybody have a chart to find out what gearing this car has? I would also like to know how to find what the original gearing was.

nate
Reply
Old Nov 9, 2005 | 09:21 PM
  #2  
BlueSix's Avatar
TECH Junkie
 
Joined: May 2003
Posts: 3,050
Likes: 0
From: its fucking cold
Default

M6 or A4? I'm guessing A4.

look inside your drivers door at the RPO codes
gu2=2.73's
gu5=3.23's

If you have an M6 then you have aftermarket gears.
Reply
Old Nov 9, 2005 | 09:22 PM
  #3  
2001NBMZ28's Avatar
TECH Senior Member
 
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
Default

www.f-body.org/gears/

A4 2.73 (GU2) or 3.23 (GU5)
M6 3.42 (GU6)

Codes are on the driver's side door.
Reply
Old Nov 9, 2005 | 09:26 PM
  #4  
BlueSix's Avatar
TECH Junkie
 
Joined: May 2003
Posts: 3,050
Likes: 0
From: its fucking cold
Default

I'm gonna guess you have 3.23's...if you're an a4.
Reply
Old Nov 9, 2005 | 09:45 PM
  #5  
Lights_Out's Avatar
On The Tree
iTrader: (1)
 
Joined: Dec 2002
Posts: 113
Likes: 0
From: Sanford/Orlando
Default

I'm going to have to say a 3.23 too...
Reply
Old Nov 9, 2005 | 10:21 PM
  #6  
Swang's Avatar
TECH Fanatic
iTrader: (3)
 
Joined: Apr 2005
Posts: 1,118
Likes: 0
From: Hometown:Mount Carmel, IL Current: Las Vegas, NV
Default

yeah, looks a little high to be an m6 so im guessing 3.23 A4
Reply
Old Nov 10, 2005 | 05:10 AM
  #7  
darrensls1's Avatar
11 Second Club
15 Year Member
 
Joined: Oct 2005
Posts: 1,847
Likes: 1
From: Sandwich, IL
Default

I have an auto with 3.23's and that sounds about right. But like others in this thread have mentioned, look at your RPO codes. Just open the drivers door and look for the white sticker at the end of the door. GU2 = 2.73 and GU5 = 3.23 gears.

Either way you may want to consider 3.73's sometime down the line for performance reasons. I'm just waiting for my rear end to blow up. Then I'm getting a 12 bolt with 3.73's.
Reply




All times are GMT -5. The time now is 07:58 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE