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

sound deadening question

Thread Tools
 
Search this Thread
 
Old Apr 14, 2026 | 01:18 PM
  #1  
Kevin LD's Avatar
Kevin LD
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Feb 2025
Posts: 171
Likes: 24
From: Superior WI
Default sound deadening question

I've ordered the sound deadening for my 78 and want to know if I need to take off the factory spray on coating before installing the new sound deadening material. Is it a must or not.
Reply
Old Apr 14, 2026 | 02:14 PM
  #2  
Rebelyell's Avatar
Rebelyell
Drifting
 
Joined: Jun 2025
Posts: 1,727
Likes: 600
Default Fuhgeddaboudit

Given what may be addition of so much sound-deadening material - what's a mere few pounds of old tramp NVH stuff ?
Reply
Old Apr 14, 2026 | 06:03 PM
  #3  
av81's Avatar
av81
Racer
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Mar 2018
Posts: 395
Likes: 52
From: wilmington Ma
Default

If it's clean enough for the new stuff to stick leave it , not sure what your using I use Dynamat great stuff I did my tranny tunnel and firewall. No more hot feet.
Reply
Old Apr 14, 2026 | 06:15 PM
  #4  
Kevin LD's Avatar
Kevin LD
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Feb 2025
Posts: 171
Likes: 24
From: Superior WI
Default

Originally Posted by Rebelyell
Given what may be addition of so much sound-deadening material - what's a mere few pounds of old tramp NVH stuff ?
Rebelyel,
Please try and understand what the question is before you assume the wrong thing. I never said it was a weight issue. If you truly want to help me, then will the new stuff stick to the old stuff, will it react and cause a problem etc.
Reply
Old Apr 14, 2026 | 06:26 PM
  #5  
Kevin LD's Avatar
Kevin LD
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
 
Joined: Feb 2025
Posts: 171
Likes: 24
From: Superior WI
Default

av81,
Dynamat agrees with your recommendation. I called Dynamat and their tech guy said clean it off and try some duct tape on it. If it sticks, then the new stuff will stick just fine. He also said there should not be any incompatibility between the two.
Reply

Get notified of new replies

To sound deadening question





All times are GMT -4. The time now is 09:00 PM.

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