CorvetteForum - Chevrolet Corvette Forum Discussion

C7 Tech/Performance Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

differential options

Thread Tools
 
Search this Thread
 
Old Nov 4, 2025 | 09:24 AM
Share
  #1  
lobsterroboto's Avatar
lobsterroboto
Thread Starter
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Jun 2016
Posts: 1,325
Likes: 325
2020 Corvette of the Year Finalist (track prepared)
C7 of Year Winner (track prepared) 2019
Default differential options
anyone know the part number for the base model C7 rear differential?

Also, for mechanical diff options for a turnkey thing is RPM the only option here?

Reply
0
Old Nov 18, 2025 | 02:33 PM
Share
  #2  
lobsterroboto's Avatar
lobsterroboto
Thread Starter
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Jun 2016
Posts: 1,325
Likes: 325
2020 Corvette of the Year Finalist (track prepared)
C7 of Year Winner (track prepared) 2019
Default

84653464

Reply
0
Old Nov 18, 2025 | 03:26 PM
Share
  #3  
Corvette4ever's Avatar
Corvette4ever
Drifting
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2000
Posts: 1,577
Likes: 99
From: Dubai, UAE
Default
Originally Posted by lobsterroboto

84653464

Thank you. What diff ratio is that? 2.41, 2.56, 2.73 or 3.42 ?
Reply
0
Old Nov 18, 2025 | 03:54 PM
Share
  #4  
lobsterroboto's Avatar
lobsterroboto
Thread Starter
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Jun 2016
Posts: 1,325
Likes: 325
2020 Corvette of the Year Finalist (track prepared)
C7 of Year Winner (track prepared) 2019
Default
Originally Posted by Corvette4ever
Thank you. What diff ratio is that? 2.41, 2.56, 2.73 or 3.42 ?

pretty sure it 3.42 M7 base model is same as Z51/GS M7

i need to confirm for sure though , i do a pretty awesome job of confusing myself dealing with GM part numbers and ratios.

Reply
0
Old Nov 22, 2025 | 07:28 AM
Share
  #5  
kenshaugh's Avatar
kenshaugh
Heel & Toe
Liked
 
Joined: Aug 2024
Posts: 20
Likes: 2
From: Orting WA
Default
I think that might not be it, I have a base model and I don't recall having to disconnect any axle cooling. That part number says it has an axle cooler. Do you know where it's stamped on the diff? My car is going to be on jacks today so I can check.
Reply
0
Old Nov 22, 2025 | 08:51 AM
Share
  #6  
Dcasole's Avatar
Dcasole
Le Mans Master
10 Year Member
Community Builder
Liked
Loved
 
Joined: Oct 2014
Posts: 8,672
Likes: 2,726
From: Atlanta GA
Default
Originally Posted by kenshaugh
I think that might not be it, I have a base model and I don't recall having to disconnect any axle cooling. That part number says it has an axle cooler. Do you know where it's stamped on the diff? My car is going to be on jacks today so I can check.
Base Model does not have same part as Z51 , GS . They both have EDiff , base has just plain old Positraction diff with no cooling

Dave
Reply
0
Old Nov 22, 2025 | 08:56 AM
Share
  #7  
kenshaugh's Avatar
kenshaugh
Heel & Toe
Liked
 
Joined: Aug 2024
Posts: 20
Likes: 2
From: Orting WA
Default
Dave,

Do you know the part number for the base diff/can you confirm if it's the one listed above?
Reply
0
Old Nov 22, 2025 | 09:14 AM
Share
  #8  
Dcasole's Avatar
Dcasole
Le Mans Master
10 Year Member
Community Builder
Liked
Loved
 
Joined: Oct 2014
Posts: 8,672
Likes: 2,726
From: Atlanta GA
Default
Originally Posted by kenshaugh
Dave,

Do you know the part number for the base diff/can you confirm if it's the one listed above?
Well its for an M7 , it states its not a E Diff but as you pointed out it states diff cooler . I have a Base A8 and have been under my car many times , also has rear bumper off ... and the only cooler i remember seeing is the trans cooler and fan behind the rear bumper ... now i am curious.... , I bet if its just a cooling loop you could just close the ports off
also if you decide to go with it , confirm that it is in stock as the NON Ediff is a hard to find peice
Dave
Reply
0
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 Nov 22, 2025 | 09:15 AM
Share
  #9  
Dcasole's Avatar
Dcasole
Le Mans Master
10 Year Member
Community Builder
Liked
Loved
 
Joined: Oct 2014
Posts: 8,672
Likes: 2,726
From: Atlanta GA
Default

Reply
0
Old Nov 22, 2025 | 02:13 PM
Share
  #10  
lobsterroboto's Avatar
lobsterroboto
Thread Starter
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Jun 2016
Posts: 1,325
Likes: 325
2020 Corvette of the Year Finalist (track prepared)
C7 of Year Winner (track prepared) 2019
Default
the base model doesn't have cooling?

not a huge deal I can always jus take it have cooling lol

Reply
0

Get notified of new replies

To differential options

Back to Subforum
C7 Tech/Performance
View Next Unread
what is this?




Click for Advanced Search
Reply Closed Thread Share
Forum Jump
Trending Topics

All times are GMT -4. The time now is 05:44 PM.

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