C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

73 body mounts

Thread Tools
 
Search this Thread
 
Old Jul 30, 2009 | 12:49 PM
  #1  
fl. 69's Avatar
fl. 69
Thread Starter
4th Gear
 
Joined: Jul 2009
Posts: 4
Likes: 0
Default 73 body mounts

Hello,
Although I'm new to the forum I have owned several corvettes over the years.
Just finished a 65 roadster resto. and I am now eyeing up a hi option 69 coupe thats been sitting in the corner of the garage for a few years. Will be restored mostly stock but will take a few liberties on some upgrades.
In 73 as you know more sound deadening was added but probably the most effective change was the rubber body mounts. Has anyone out there either used, adapted, or had any experience with aftermarket rubber body mount on a 68-72?
Thanks for your help.
Reply
Old Jul 30, 2009 | 01:43 PM
  #2  
69Vett's Avatar
69Vett
Safety Car
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2007
Posts: 3,729
Likes: 267
From: Austin Texas
Corvette of the Year Winner 2017
2016 C3 of Year Finalist
Default

you bet, I replaced my crumbling aluminum, with Poly mounts,
it will add app. 3/16 to the height of your car over the orginals.
you have to buy mounts for a 73, no one makes non-alumin. replacements for the 68-72.
69VETT
Reply
Old Jul 30, 2009 | 02:15 PM
  #3  
Mike Ward's Avatar
Mike Ward
Race Director
10 Year Member
 
Joined: Jul 2001
Posts: 15,892
Likes: 42
Default

The poly mounts are much more rigid than the rubber mounts- which in turn transmits road vibration and noise to the passenger compartment.

Not sure why anybody would consider that being a 'upgrade'.
Reply
Old Jul 30, 2009 | 06:04 PM
  #4  
hdpete98's Avatar
hdpete98
Pro
20 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Feb 2002
Posts: 709
Likes: 10
From: Carlsbad CA
Default

How could going from metal to poly not be an upgrade as it relates to noise/vibration?
Reply
Old Jul 30, 2009 | 06:16 PM
  #5  
fl. 69's Avatar
fl. 69
Thread Starter
4th Gear
 
Joined: Jul 2009
Posts: 4
Likes: 0
Default

Thanks for the response, however I think I would prefer the rubber over poly.
Any other thoughs?
Reply
Old Jul 30, 2009 | 06:42 PM
  #6  
Mike Ward's Avatar
Mike Ward
Race Director
10 Year Member
 
Joined: Jul 2001
Posts: 15,892
Likes: 42
Default

Originally Posted by hdpete98
How could going from metal to poly not be an upgrade as it relates to noise/vibration?

Go from metal to rubber- for the same reasons GM did. Not rocket science.
Reply
Old Jul 30, 2009 | 07:57 PM
  #7  
zwede's Avatar
zwede
Race Director
25 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
Default

I used '73-up OEM style rubber mounts on my '71. Liked it a lot, comfier without degrading handling.
Reply
Old Jul 30, 2009 | 09:35 PM
  #8  
dprinter1's Avatar
dprinter1
Melting Slicks
15 Year Member
Veteran: Navy
 
Joined: Jul 2005
Posts: 3,389
Likes: 83
From: Norfolk Virginia
Default

Originally Posted by zwede
I used '73-up OEM style rubber mounts on my '71. Liked it a lot, comfier without degrading handling.
You answered my question, thanks, I'll be gettin em for my 71
If I ever get back to that point
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Corvettes to Drive Before You Die!

 Joe Kucinski
story-1

Corvette & Porsche 911: How Two Icons Conquered the Last 25 Years

 Joe Kucinski
story-2

2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

 Michael S. Palmer
story-3

5 Best & 5 Worst Corvette Daily Drivers

 Joe Kucinski
story-4

The Headlights of Every Corvette Generation Explained

 Joe Kucinski
story-5

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-6

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-7

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-8

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-9

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
Old Jul 31, 2009 | 07:20 AM
  #9  
HamadUP's Avatar
HamadUP
Melting Slicks
Supporting Lifetime
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jan 2003
Posts: 2,877
Likes: 13
From: Doha
St. Jude Donor '08
Default

Originally Posted by Mike Ward
Go from metal to rubber- for the same reasons GM did. Not rocket science.
Still going from metal to poly will enhance the road noise suppression. Not rocket science!
Reply
Old Jul 31, 2009 | 08:30 AM
  #10  
fl. 69's Avatar
fl. 69
Thread Starter
4th Gear
 
Joined: Jul 2009
Posts: 4
Likes: 0
Default

I agree it is not "rocket science" to go to rubber. My concern was that in 73 G.M. lowered the body mount brackets a bit on the frame to compensate for the new rubber mounts. Will the body sit noticeably higher on the 69 frame with 73 body mounts?
Reply
Old Jul 31, 2009 | 09:07 AM
  #11  
Mike Ward's Avatar
Mike Ward
Race Director
10 Year Member
 
Joined: Jul 2001
Posts: 15,892
Likes: 42
Default

It will be noticeable for someone who really knows their stuff and is looking at the precise angle. Otherwise, meh.
Reply
Old Jul 31, 2009 | 10:40 AM
  #12  
69Vett's Avatar
69Vett
Safety Car
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2007
Posts: 3,729
Likes: 267
From: Austin Texas
Corvette of the Year Winner 2017
2016 C3 of Year Finalist
Default

"you bet, I replaced my crumbling aluminum, with Poly mounts,
it will add app. 3/16 to the height of your car over the orginals."

same height change with poly or rubber, NO you will not notice the difference.
69VETT
Reply
Old Jul 31, 2009 | 10:41 AM
  #13  
zwede's Avatar
zwede
Race Director
25 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
Default

Originally Posted by fl. 69
My concern was that in 73 G.M. lowered the body mount brackets a bit on the frame to compensate for the new rubber mounts.
Common misconception. There was no change in the frame brackets on the 73's or later. I've compared pre and post 73 frames side by side and the brackets are identical.
Reply
Old Jul 31, 2009 | 11:18 AM
  #14  
GD70's Avatar
GD70
Le Mans Master
15 Year Member
 
Joined: Jan 2007
Posts: 5,485
Likes: 7
From: Peekskill NY
Default

Anyone have before & after PICS showing the difference in body height?
I would also think the rubber mounts would cut down on vibration caused stress cracks, which drive me crazy.
Glenn
Reply
Old Aug 1, 2009 | 01:24 PM
  #15  
BigWheels's Avatar
BigWheels
2nd Gear
 
Joined: Nov 2005
Posts: 2
Likes: 0
Default

I buyed a Poly Body Mount kit from Energy Suspension for 65-72 Corvette #3.4102G maybe 10 years ago. No problems!
Reply

Get notified of new replies

To 73 body mounts





All times are GMT -4. The time now is 02:53 AM.

story-0
10 Corvettes to Drive Before You Die!

Slideshow: 10 Corvettes to drive before you die.

By Joe Kucinski | 2026-06-23 08:31:12


VIEW MORE
story-1
Corvette & Porsche 911: How Two Icons Conquered the Last 25 Years

Slideshow: Corvette and Porsche 911, how two icons conquered the last 25 years.

By Joe Kucinski | 2026-06-23 08:18:33


VIEW MORE
story-2
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-3
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-4
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-5
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-6
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-7
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-8
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-9
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