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

Differential advice

Thread Tools
 
Search this Thread
 
Old Sep 26, 2015 | 12:11 PM
  #1  
xxbiodavexx's Avatar
Thread Starter
Teching In
 
Joined: Sep 2015
Posts: 12
Likes: 0
From: Fredericksburg, VA
Default Differential advice

I own a 2000 NHRA Pontiac Firebird Trans Am LS1, recently the differential had been leaking and making a noise. Everyone I've had look at it tells me I need a new one. Where would be the best website to go to order one? I'm looking for 3.73 ratio or 4.10 ratio. I don't know the difference between higher or lower numerical carriers. I also don't know how many teeth to go with.
Reply
Old Sep 27, 2015 | 09:33 AM
  #2  
wssix99's Avatar
Save the manuals!
15 Year Member
iTrader: (5)
 
Joined: Dec 2007
Posts: 12,967
Likes: 389
From: Chicago, IL
Default

Moving to Gears and Axles.
Reply
Old Sep 27, 2015 | 04:24 PM
  #3  
stevenc1703's Avatar
Teching In
 
Joined: Aug 2015
Posts: 41
Likes: 0
Default

Are you wanting to stick with a 10 bolt or do you want something stronger? I have a 12 bolt that I love but a s60 with a spool would only set you back about 2k.
Reply
Old Sep 28, 2015 | 08:09 AM
  #4  
MidwestChassis's Avatar
LS1Tech Premium Sponsor
iTrader: (5)
 
Joined: Feb 2010
Posts: 1,506
Likes: 2
Default

Can you give us a little more info on the car such as gear ratio whether is a 6spd or auto and what you do with it.
Reply
Old Sep 28, 2015 | 04:22 PM
  #5  
FirstYrLS1Z's Avatar
TECH Veteran
20 Year Member
Photogenic
Photoriffic
Active Streak: 30 Days
iTrader: (4)
 
Joined: Aug 2004
Posts: 4,218
Likes: 147
From: Euclid,Ohio
Default

more info first !!!
Reply
Old Sep 29, 2015 | 07:10 AM
  #6  
Bob@BruteSpeed's Avatar
LS1Tech Sponsor
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
iTrader: (16)
 
Joined: Mar 2003
Posts: 21,020
Likes: 35
From: Roanoke, IN
Default

Originally Posted by xxbiodavexx
I own a 2000 NHRA Pontiac Firebird Trans Am LS1, recently the differential had been leaking and making a noise. Everyone I've had look at it tells me I need a new one. Where would be the best website to go to order one? I'm looking for 3.73 ratio or 4.10 ratio. I don't know the difference between higher or lower numerical carriers. I also don't know how many teeth to go with.
http://shop.brutespeed.com/Moser-12-...fferential.htm
12 Bolt

http://shop.brutespeed.com/Moser-9-I...c-Truetrac.htm
http://shop.brutespeed.com/Moser-9-I...h-Wavetrac.htm
9 Inch

Here are the Moser 12 bolt and 9 inch rears that I sell. Give me a call if you have any questions, or send me an e-mail. Bob
__________________
ATI ProCharger and Moser Sales 260 672-2076

PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com

https://brutespeed.com/ Link to website


Reply
Old Sep 30, 2015 | 02:27 PM
  #7  
xxbiodavexx's Avatar
Thread Starter
Teching In
 
Joined: Sep 2015
Posts: 12
Likes: 0
From: Fredericksburg, VA
Default

I just recently bought the car so I'm still learning about it. Its a 6-Speed with a stage 2 clutch making roughly 400hp. I'm not sure on the torque. I would just like to have a nice ride with the ability to kick the *** end out if I want. Whatever I get I need to know its going to handle the torque and power.
Reply
Old Sep 30, 2015 | 02:32 PM
  #8  
stevenc1703's Avatar
Teching In
 
Joined: Aug 2015
Posts: 41
Likes: 0
Default

Stay away from a 10 bolt then, unless your adding more hp to it in the future any of the 3 should do you fine. 12 bolt is probably a cheaper option. Don't get a spool, some of the less expensive rears come with spools that are tough as nails but not good on the street. Im not experienced with different setups but I love my strange 12 bolt.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

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

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Sep 30, 2015 | 02:35 PM
  #9  
xxbiodavexx's Avatar
Thread Starter
Teching In
 
Joined: Sep 2015
Posts: 12
Likes: 0
From: Fredericksburg, VA
Default

I was thinking about this one http://www.jegs.com/i/Eaton/362/19599-010/10002/-1
Reply
Old Sep 30, 2015 | 02:43 PM
  #10  
stevenc1703's Avatar
Teching In
 
Joined: Aug 2015
Posts: 41
Likes: 0
Default

I'm sure that would do great, should be pretty similar feel to stock. I went with this cause its supposed to take a beating and last forever, I like it but the posi might ride better.

http://www.summitracing.com/parts/dtl-914a575/overview/
Reply
Old Sep 30, 2015 | 02:51 PM
  #11  
xxbiodavexx's Avatar
Thread Starter
Teching In
 
Joined: Sep 2015
Posts: 12
Likes: 0
From: Fredericksburg, VA
Default

I was told i need a posi locking diff. I'm just trying to find the best one
Reply
Old Sep 30, 2015 | 02:59 PM
  #12  
stevenc1703's Avatar
Teching In
 
Joined: Aug 2015
Posts: 41
Likes: 0
Default

Doesn't have to be posi to be safe and good on the street. Watch this video to understand the benefits of a helical gear differential.

Reply
Old Sep 30, 2015 | 03:10 PM
  #13  
stevenc1703's Avatar
Teching In
 
Joined: Aug 2015
Posts: 41
Likes: 0
Default

Here is a video of a posi.

Reply
Old Oct 22, 2015 | 01:28 PM
  #14  
xxbiodavexx's Avatar
Thread Starter
Teching In
 
Joined: Sep 2015
Posts: 12
Likes: 0
From: Fredericksburg, VA
Default

Which differentials would you recommend for a 2000 Trans Am 6 Speed Manual with a stage 2 clutch making 400 rhp?
Reply
Old Oct 22, 2015 | 02:15 PM
  #15  
stevenc1703's Avatar
Teching In
 
Joined: Aug 2015
Posts: 41
Likes: 0
Default

What are you doing with the car? Drag racing, track racing, or daily driving?
Reply
Old Oct 23, 2015 | 04:49 PM
  #16  
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

Fresh gears, fresh bearings, good as new.
Reply
Old Oct 28, 2015 | 12:34 PM
  #17  
xxbiodavexx's Avatar
Thread Starter
Teching In
 
Joined: Sep 2015
Posts: 12
Likes: 0
From: Fredericksburg, VA
Default

Right now its just for daily driving. They are putting a drag strip close to my house next year, and I was thinking about testing my luck.
Reply
Old Oct 28, 2015 | 01:01 PM
  #18  
Bob@BruteSpeed's Avatar
LS1Tech Sponsor
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
iTrader: (16)
 
Joined: Mar 2003
Posts: 21,020
Likes: 35
From: Roanoke, IN
Default

http://shop.brutespeed.com/Moser-9-I...c-Truetrac.htm

If your car has ABS and traction control, the Trac-Loc is a good way to go. You can't go with the Trac-Loc if you have just ABS, in which case I'd go with the Truetrac. Bob
__________________
ATI ProCharger and Moser Sales 260 672-2076

PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com

https://brutespeed.com/ Link to website


Reply
Old Oct 29, 2015 | 06:22 AM
  #19  
trevmust's Avatar
TECH Enthusiast
 
Joined: Aug 2012
Posts: 536
Likes: 0
From: Vancouver, BC
Default

Anyone know why Moser site is down
Reply
Old Oct 29, 2015 | 07:02 AM
  #20  
Bob@BruteSpeed's Avatar
LS1Tech Sponsor
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
iTrader: (16)
 
Joined: Mar 2003
Posts: 21,020
Likes: 35
From: Roanoke, IN
Default

Originally Posted by trevmust
Anyone know why Moser site is down
Nothing to worry about, it will be back up shortly. Bob
__________________
ATI ProCharger and Moser Sales 260 672-2076

PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com

https://brutespeed.com/ Link to website


Reply



All times are GMT -5. The time now is 10:54 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE