C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Ring and Pinion question.

Thread Tools
 
Search this Thread
 
Old Feb 24, 2012 | 08:50 PM
  #1  
Mr.Bill's Avatar
Mr.Bill
Thread Starter
Race Director
 
Joined: Jul 2007
Posts: 18,681
Likes: 47
From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
Default Ring and Pinion question.

I bought a set of new Motive Gear 3.90.1 for my C5, I was under the impression that the ring was 39 teeth and the pinion is 10 teeth, The gears I got are 11 teeth pinion and 43 ring, Anyone have input on my delema? I e-mailed Motive Gear, But I guess they are gone for the weekend.
Thanks in advance.
Mr.Bill
Reply
Old Feb 24, 2012 | 08:58 PM
  #2  
TB04TJ's Avatar
TB04TJ
Advanced
 
Joined: Oct 2011
Posts: 72
Likes: 0
From: Lewisville TX
Default

3.9 X 11 = 42.9. Close enough to call it 3.90.1
Reply
Old Feb 24, 2012 | 09:00 PM
  #3  
Mr.Bill's Avatar
Mr.Bill
Thread Starter
Race Director
 
Joined: Jul 2007
Posts: 18,681
Likes: 47
From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
Default

Thank You.
Mr.Bill
Reply
Old Feb 24, 2012 | 09:11 PM
  #4  
TB04TJ's Avatar
TB04TJ
Advanced
 
Joined: Oct 2011
Posts: 72
Likes: 0
From: Lewisville TX
Default

Or 43 / 11 = 3.9090909
Reply
Old Feb 24, 2012 | 09:15 PM
  #5  
Mr.Bill's Avatar
Mr.Bill
Thread Starter
Race Director
 
Joined: Jul 2007
Posts: 18,681
Likes: 47
From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
Default

Originally Posted by TB04TJ
Or 43 / 11 = 3.9090909
What has me puzzled is Motive says their 3.90 gears are 10 and 39, Not 11 and 43, The kit I got is the V855390L.
http://www.summitracing.com/parts/MGR-V885390L
Reply
Old Feb 25, 2012 | 02:50 PM
  #6  
C5FORFUN2's Avatar
C5FORFUN2
Drifting
15 Year Member
Liked
Community Favorite
Top Answer: 3
 
Joined: Jul 2006
Posts: 1,488
Likes: 254
From: Lake Tapps WA.
Default

Originally Posted by Mr.Bill
What has me puzzled is Motive says their 3.90 gears are 10 and 39, Not 11 and 43, The kit I got is the V855390L.
http://www.summitracing.com/parts/MGR-V885390L
Depends on the housing the gears go in (12 bolt, 10 bolt, 9" etc.) Larger pinion gear is better so with space permitting that makes a stronger gear set.
Reply
Old Feb 26, 2012 | 09:24 AM
  #7  
Blitzkrieg's Avatar
Blitzkrieg
AKA "The CLOWN"
Supporting Lifetime
10 Year Member
 
Joined: Feb 2010
Posts: 6,261
Likes: 13
From: Chicago South Suburbs
Default

If you do a lot of highway driving, 70mph+, you will most likely not like a 3.90 gear. But will be a lot of fun city driving!

I have a 3.42 and the rpms at 75-80mph are around 2400. Would not want them any higher!
Reply
Old Feb 26, 2012 | 09:34 AM
  #8  
Mr.Bill's Avatar
Mr.Bill
Thread Starter
Race Director
 
Joined: Jul 2007
Posts: 18,681
Likes: 47
From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
Default

Originally Posted by Blitzkrieg
If you do a lot of highway driving, 70mph+, you will most likely not like a 3.90 gear. But will be a lot of fun city driving!

I have a 3.42 and the rpms at 75-80mph are around 2400. Would not want them any higher!
I don't do a lot of highway driving and when I do it is around 70 give or take, I feel I should be fine, I am getting them installed next week I hope.
Mr.Bill
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old Feb 26, 2012 | 11:19 AM
  #9  
RonSSNova's Avatar
RonSSNova
Safety Car
10 Year Member
All Eyes On Me
Photogenic
Top Answer: 1
 
Joined: Aug 2011
Posts: 4,447
Likes: 408
From: Portland OR
Default

Must be a misprint in the liturature.
Did you count the teef?

As was stated, a pinion wif 11 teef is more strongerer than a pinion wif 10 teef.
Now it's time to go brush my front toof for the week.......

So what is the cost for this work? Are you taking them a diff or the whole car?

Ron
Reply
Old Feb 26, 2012 | 11:22 AM
  #10  
rodney@rpmtransmissions's Avatar
0rodney@rpmtransmissions
Former Vendor
 
Joined: Apr 2001
Posts: 2,719
Likes: 3
From: Anderson Indiana
Default

All C5/C6 Corvette ring gears have 41 teeth.... except a 3.90 which have 43 as mentioned above.

16-41 = 2.56
15-41 = 2.73
14-41 = 2.93 (cadillac XLR)
13-41 = 3.15
12-41 = 3.42
11-41 = 3.73 (Motive)
11-43 = 3.90 (Motive)
10-41 = 4.10 (Motive)
Reply
Old Feb 26, 2012 | 11:38 AM
  #11  
Mr.Bill's Avatar
Mr.Bill
Thread Starter
Race Director
 
Joined: Jul 2007
Posts: 18,681
Likes: 47
From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
Default

Originally Posted by RonSSNova
Must be a misprint in the liturature.
Did you count the teef?

As was stated, a pinion wif 11 teef is more strongerer than a pinion wif 10 teef.
Now it's time to go brush my front toof for the week.......

So what is the cost for this work? Are you taking them a diff or the whole car?

Ron
I am taking the shop the car to have the work done, They are charging me 400-450 labor, I bought the gears for 220 shipped to me new.

Originally Posted by rodney@rpmtransmissions
All C5/C6 Corvette ring gears have 41 teeth.... except a 3.90 which have 43 as mentioned above.

16-41 = 2.56
15-41 = 2.73
14-41 = 2.93 (cadillac XLR)
13-41 = 3.15
12-41 = 3.42
11-41 = 3.73 (Motive)
11-43 = 3.90 (Motive)
10-41 = 4.10 (Motive)
Thank You.
Reply
Old Feb 26, 2012 | 02:31 PM
  #12  
Mr. Jean's Avatar
Mr. Jean
Safety Car
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2006
Posts: 3,623
Likes: 316
From: Sparks, Nevada
Default

You'll do just about anything to catch my truck, won't you?
May have to put my 4:10's back in now.

You should have a quick street ride for sure now.

Last edited by Mr. Jean; Feb 26, 2012 at 02:34 PM.
Reply
Old Feb 26, 2012 | 02:33 PM
  #13  
Mr.Bill's Avatar
Mr.Bill
Thread Starter
Race Director
 
Joined: Jul 2007
Posts: 18,681
Likes: 47
From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
Default

Originally Posted by Mr. Jean
You'll do just about anything to catch my truck, won't you?

Should be a quick street ride for sure now.
Come on now, That hurts....

Bring it on...lol
Reply
Old Feb 26, 2012 | 11:59 PM
  #14  
Suthunman's Avatar
Suthunman
Safety Car
 
Joined: Oct 2011
Posts: 4,831
Likes: 21
From: The Voice of Reason!
St. Jude Donor '14
Default

Originally Posted by RonSSNova
Must be a misprint in the liturature.
Did you count the teef?

As was stated, a pinion wif 11 teef is more strongerer than a pinion wif 10 teef.
Now it's time to go brush my front toof for the week.......

So what is the cost for this work? Are you taking them a diff or the whole car?

Ron
Ron,

You are sounding like you are from Arkansas!
Reply
Old Feb 27, 2012 | 12:11 AM
  #15  
Mr.Bill's Avatar
Mr.Bill
Thread Starter
Race Director
 
Joined: Jul 2007
Posts: 18,681
Likes: 47
From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
Default

Originally Posted by Suthunman
Ron,

You are sounding like you are from Arkansas!
Now that there is funny...
Reply

Get notified of new replies

To Ring and Pinion question.





All times are GMT -4. The time now is 04:00 AM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE