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

Rear body mount replacing

Thread Tools
 
Search this Thread
 
Old Aug 22, 2018 | 02:45 PM
  #1  
Corvette ED's Avatar
Corvette ED
Thread Starter
Le Mans Master
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2000
Posts: 9,127
Likes: 2,326
From: Pottsville, PA. USA Home Of America's Oldest Brewery Yuengling
Default Rear body mount replacing

What is involved in changing the #4 rear body mount on a 1977. If the bolt comes out will the new mount slip in or does the body need to be raised
Reply
Old Aug 22, 2018 | 03:49 PM
  #2  
Red86Z51's Avatar
Red86Z51
Safety Car
20 Year Member
Liked
Loved
Top Answer: 3
 
Joined: Mar 2003
Posts: 3,583
Likes: 504
From: Indianapolis IN
Finalist 2020 C4 of the Year - Unmodified
C4 of Year Finalist (stock) 2019
Default

Originally Posted by Corvette ED
What is involved in changing the #4 rear body mount on a 1977. If the bolt comes out will the new mount slip in or does the body need to be raised
You should be able to do it without too much trouble...IF (and this is a BIG FAT IF)...the cage nuts in the rear interior wells hold up and allow you to remove the bolts. Most of the time those cage nuts break loose, spin free, and you end up having to cut the body mount bolts to get them out. If you end up having to go the "cut" route, you will still have to remove the upper part of the bolt...and that will still be held in place by the part of the "cage" that didn't break free. It's an all around fun job to be sure...bring your patience with you that day.

And yes, you will have to lift the body slightly for clearance to install the new mounts..

(I would suggest applying some penetrating oil to those nuts well before you plan on undertaking that task.)

Regards,

Dave
Reply
Old Aug 22, 2018 | 06:57 PM
  #3  
Mooser's Avatar
Mooser
Race Director
10 Year Member
 
Joined: Apr 2011
Posts: 11,183
Likes: 3,335
From: North of Toronto - Ontario
Default



Usually the cage rivets shear off, (I made a tool to fit over the cage to hold it from rotating on a long power bar for re-install, a section of square tube bubba'd to hold the nut on the side that was missing the cage)

If you trim off the short flange on the new mount (one with a single rivet hole) you can usually finagle the mount in without having to lift the body away. It's the one that goes towards the rear splash apron part of the body and you would need a lot of clearance to get it to slide up into there

M
Reply

Get notified of new replies

To Rear body mount replacing





All times are GMT -4. The time now is 01:20 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