C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Rear diff finally back in!

Thread Tools
 
Search this Thread
 
Old Aug 6, 2018 | 10:03 AM
  #1  
gjohnson's Avatar
gjohnson
Thread Starter
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2008
Posts: 1,809
Likes: 441
From: Denver CO
Default Rear diff finally back in!

The task is finally done! Took her out for a run and WOW! 3.08 to 3.70. Also only doing this once so I did trailing arm bushings/u-joints and heavy leaf.Thanks to all on this forum who helped me along the way.


Back in she goes


At the exhaust shop
Reply
Old Aug 6, 2018 | 10:25 AM
  #2  
tviscomi's Avatar
tviscomi
Instructor
 
Joined: Apr 2018
Posts: 174
Likes: 17
From: Philadelphia, PA
Default

Great...I just completed the same task on my 1978. I replaced everything, thus hopefully I'll never have to deal with it again in my lifetime.
Reply
Old Aug 6, 2018 | 11:58 AM
  #3  
gkull's Avatar
gkull
Team Owner
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Default

Originally Posted by tviscomi
Great...I just completed the same task on my 1978. I replaced everything, thus hopefully I'll never have to deal with it again in my lifetime.
I must be doing something wrong. Even with the best parts my diff seems to need work every few years! I even now have a complete spare with different gearing so I can change it out in half a day.

Last edited by gkull; Aug 6, 2018 at 12:00 PM.
Reply
Old Aug 6, 2018 | 11:59 AM
  #4  
tviscomi's Avatar
tviscomi
Instructor
 
Joined: Apr 2018
Posts: 174
Likes: 17
From: Philadelphia, PA
Default

Originally Posted by gkull
I must be doing something wrong. Even with the best parts my diff seems to need work every few years!
Did not need to hear that...LOL
Reply
Old Aug 6, 2018 | 12:07 PM
  #5  
gjohnson's Avatar
gjohnson
Thread Starter
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2008
Posts: 1,809
Likes: 441
From: Denver CO
Default

Originally Posted by gkull
I must be doing something wrong. Even with the best parts my diff seems to need work every few years! I even now have a complete spare with different gearing so I can change it out in half a day.
Bummer! I'm not worried at all.I had a top flight diff shop build mine.That was something that was above my pay grade.

Last edited by gjohnson; Aug 6, 2018 at 12:09 PM.
Reply
Old Aug 6, 2018 | 01:14 PM
  #6  
Ryan Menzies's Avatar
Ryan Menzies
Instructor
 
Joined: Aug 2016
Posts: 235
Likes: 28
From: Fort McMurray Alberta
Default

Originally Posted by tviscomi
Did not need to hear that...LOL
Don't gkull discourage you. Keep in mind he probably burns through a set of tires before the charge hits his credit card at the end of month.LOL
Reply
Old Aug 6, 2018 | 07:21 PM
  #7  
doorgunner's Avatar
doorgunner
2026 Loser of the Year
Supporting Member
10 Year Member
Veteran: Army
Photogenic
Photoriffic
 
Joined: Sep 2013
Posts: 36,599
Likes: 7,046
From: New Or-leens Loo-z-anna
Default

Originally Posted by gkull
I must be doing something wrong. Even with the best parts my diff seems to need work every few years! I even now have a complete spare with different gearing so I can change it out in half a day.
RENO! The differential oil is probably boiling before you start the car. (Just picking)
Reply
Old Aug 6, 2018 | 08:19 PM
  #8  
croaker's Avatar
croaker
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2006
Posts: 2,369
Likes: 103
From: Centerville Louisiana
Default



Doing the same job. Trailing arms came right out so I musta done something wrong. What color you painted your shafts and dif.?

Last edited by croaker; Aug 6, 2018 at 08:21 PM.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

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

 Michael S. Palmer
story-7

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

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

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

 Verdad Gallardo
Old Aug 6, 2018 | 08:22 PM
  #9  
croaker's Avatar
croaker
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2006
Posts: 2,369
Likes: 103
From: Centerville Louisiana
Default

Did you change change your side yokes?
Reply
Old Aug 6, 2018 | 08:36 PM
  #10  
tviscomi's Avatar
tviscomi
Instructor
 
Joined: Apr 2018
Posts: 174
Likes: 17
From: Philadelphia, PA
Default

Originally Posted by croaker
Did you change change your side yokes?
If this question was for me...I bought my Rear and trailing arms completed (i.e. did not send in my case/housing for rebuilding). Yes it was more expensive that way, but I did not want deal with any of the shipping crap. I also went up to 3:55 gears.
Reply
Old Aug 6, 2018 | 09:51 PM
  #11  
The Money Pit's Avatar
The Money Pit
Melting Slicks
20 Year Member
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Jun 2002
Posts: 2,844
Likes: 99
From: Orrtanna Pa.
Default

Originally Posted by gjohnson
The task is finally done! Took her out for a run and WOW! 3.08 to 3.70. Also only doing this once so I did trailing arm bushings/u-joints and heavy leaf.Thanks to all on this forum who helped me along the way.


Back in she goes


At the exhaust shop
When I did mine twenty years ago I thought that was the last time for me too......150,000 miles later I'm going to 4.11 gears from the 3.70 set. Though I don't share GKulls ability for a half day swap.....I don't mind freshening things up while it's apart, tip a few beers and enjoy the journey.

Looks like you had a great experience, and are now rewarded for your work. Enjoy the ride!
Reply
Old Aug 6, 2018 | 11:12 PM
  #12  
gjohnson's Avatar
gjohnson
Thread Starter
Drifting
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2008
Posts: 1,809
Likes: 441
From: Denver CO
Default

Originally Posted by croaker
Did you change change your side yokes?
Yes new yokes. I painted the diff/shafts/leaf and calipers with this


Reply
Old Aug 7, 2018 | 02:29 AM
  #13  
gkull's Avatar
gkull
Team Owner
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Default

Money pit, you must have forgotten that I worked for many years as a traveling race car team pit crew with all the correct tools and two people it could be practised down to a very short time I did this last differential by my self and just a floor jack in not that many hours even doing all the half shafts 1350s

it does help that everythingis clean and I just did two years ago when I went from 4.11 rear end to 3.55 because of racing and my posi was about burned out. The diff I pulled out is just a ready spare I'm just going to put in a polished case posi unit that is super tight

powerful motors and slicks or even big tires just heat up the rear end. Before I went to the Tom's stuff many years ago I had about annual broken/cracked posi
cases

yes I do go through lots of rear tires

Reply
Old Aug 7, 2018 | 08:10 AM
  #14  
The Money Pit's Avatar
The Money Pit
Melting Slicks
20 Year Member
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Jun 2002
Posts: 2,844
Likes: 99
From: Orrtanna Pa.
Default

Originally Posted by gkull
Money pit, you must have forgotten that I worked for many years as a traveling race car team pit crew with all the correct tools and two people it could be practised down to a very short time I did this last differential by my self and just a floor jack in not that many hours even doing all the half shafts 1350s

it does help that everythingis clean and I just did two years ago when I went from 4.11 rear end to 3.55 because of racing and my posi was about burned out. The diff I pulled out is just a ready spare I'm just going to put in a polished case posi unit that is super tight

powerful motors and slicks or even big tires just heat up the rear end. Before I went to the Tom's stuff many years ago I had about annual broken/cracked posi
cases

yes I do go through lots of rear tires
Mine was out in a few hours, but I tend to clean and paint every area I touch,...kind of a rolling resto. Had to wait for paint to dry, and parts to arrive. Otherwise I would have been much quicker doing my swap.
I wish I had to right tools, and help...….but I work with what I have. Floor jack actually worked very well.

Last edited by The Money Pit; Aug 7, 2018 at 08:28 AM.
Reply
Old Aug 7, 2018 | 11:03 AM
  #15  
gkull's Avatar
gkull
Team Owner
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Default

Gary R. is big on adding a drain plug. so I did this on my last install.

Black epoxy paint and brass drain plug. the problem with epoxy paint is that it take 24 hours to cure. but it makes it into a rust free diff.

Reply

Get notified of new replies

To Rear diff finally back in!





All times are GMT -4. The time now is 08:57 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
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-7
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-8
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-9
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