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

Need some help choosing gears?

Thread Tools
 
Search this Thread
 
Old Feb 10, 2009 | 12:19 PM
  #1  
209ryder's Avatar
Thread Starter
On The Tree
iTrader: (2)
 
Joined: Feb 2009
Posts: 198
Likes: 0
From: Ceres,CA
Default Need some help choosing gears?

I have a 2000 FORMULA FIREBIRD.I have a six speed. I want to run 3.90's for the simple fact everyone i have met with similar cars run 3.73's.So i want a lil more jump on the competition? But i dont want to sacrifice too much top end?? Right?My car is basically only a weekend ryder and to car shows and race tracks. I would like to know peoples info on there gear changes and how they liked them?

Last edited by 209ryder; Feb 10, 2009 at 12:27 PM.
Reply
Old Feb 10, 2009 | 01:40 PM
  #2  
Strahley's Avatar
TECH Fanatic
iTrader: (4)
 
Joined: Jan 2004
Posts: 1,126
Likes: 0
From: Manhattan, KS
Default

3.90s are a nice gear, but don't except your car to be leaps and bounds faster than a similar car with 3.73s

If you want a bigger jump on them, get a 9" with some big gears and a pair of M/T ET Radials. They'll probably be launching softly/spinning, while you can launch/hook hard as hell and not worry about breaking that 10 bolt
Reply
Old Feb 10, 2009 | 03:45 PM
  #3  
SS1875's Avatar
11 Second Club
iTrader: (34)
 
Joined: Feb 2005
Posts: 3,158
Likes: 0
From: Ft. Wayne, Indiana
Default

3.90 as stated won't be much of a difference for you.....4.10/4.11 would be.....you'll be fine.
Reply
Old Feb 11, 2009 | 12:15 AM
  #4  
209ryder's Avatar
Thread Starter
On The Tree
iTrader: (2)
 
Joined: Feb 2009
Posts: 198
Likes: 0
From: Ceres,CA
Default reply

Thanks for the info guys. So my next question is there a preference in brands like motive, or richmond,summit,ratech? So im pretty positive that im gonna go with the 4.10's. Iam looking at hooker headers for my ride too.
Reply
Old Feb 11, 2009 | 08:26 AM
  #5  
Strahley's Avatar
TECH Fanatic
iTrader: (4)
 
Joined: Jan 2004
Posts: 1,126
Likes: 0
From: Manhattan, KS
Default

Richmonds tend to whine a bit. I haven't heard much from Summit gears, but the one review I've heard they did well. Motives are a good brand, they don't seem to whine as bad as Richmonds in my experience. The best bet usually is to get some OEM gears
Reply
Old Feb 11, 2009 | 07:50 PM
  #6  
209ryder's Avatar
Thread Starter
On The Tree
iTrader: (2)
 
Joined: Feb 2009
Posts: 198
Likes: 0
From: Ceres,CA
Default

So i should go get them from gm performance parts than??they are probly way more expensive huh?? Well thanks for the advice and wish me luck hahahahaha
Reply
Old Feb 11, 2009 | 08:54 PM
  #7  
4.6what's Avatar
On The Tree
 
Joined: Sep 2008
Posts: 142
Likes: 0
From: Roanoke Rapids, NC
Default

i ordered mine from www.speedinc.com. motive makes the gears for gm if im not mistaken. they have a pretty good price on gears and install kits. mine were less than 300
Reply
Old Feb 11, 2009 | 10:13 PM
  #8  
01ssreda4's Avatar
TECH Senior Member
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (96)
 
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
Default

motive 4.10s ftmfw
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Feb 12, 2009 | 10:02 AM
  #9  
BriancWS6's Avatar
10 Second Club
iTrader: (18)
 
Joined: Mar 2004
Posts: 3,910
Likes: 1
From: The Garage
Default

I'm guessing your installing them in your 10 bolt. Go with 4.10s, and don't even remotely consider any less gear.

I had 4.10s in the 10 bolt and now 4.30s in the M9.
Reply
Old Feb 12, 2009 | 12:37 PM
  #10  
209ryder's Avatar
Thread Starter
On The Tree
iTrader: (2)
 
Joined: Feb 2009
Posts: 198
Likes: 0
From: Ceres,CA
Default

Yeah so im gonna go with the motive 410's ordering them today. thanks for all the info. And yes its going in my stock 10 bolt. Doing it myself hopefully by this weekend. but they will be in for sure next weekend!!!!
Reply
Old Feb 12, 2009 | 12:53 PM
  #11  
BriancWS6's Avatar
10 Second Club
iTrader: (18)
 
Joined: Mar 2004
Posts: 3,910
Likes: 1
From: The Garage
Default

You won't be disapointed. Let us know how you like them.
Reply




All times are GMT -5. The time now is 09:04 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE