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

muffler finish

Thread Tools
 
Search this Thread
 
Old Dec 21, 2011 | 08:22 PM
  #1  
9492's Avatar
9492
Thread Starter
Advanced
 
Joined: Oct 2011
Posts: 67
Likes: 0
Default muffler finish

Page 100 of the 1970-72 NCRS technical information manual and judging guide says that mufflers were painted with a black- out spray. Is this correct? I believe the mufflers on mine to be original. They are galvanized with no black-out paint.
Reply
Old Dec 22, 2011 | 04:09 AM
  #2  
hunt4cleanair's Avatar
hunt4cleanair
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2002
Posts: 5,236
Likes: 898
From: Myrtle Beach SC
Default

Originally Posted by 9492
Page 100 of the 1970-72 NCRS technical information manual and judging guide says that mufflers were painted with a black- out spray. Is this correct? I believe the mufflers on mine to be original. They are galvanized with no black-out paint.
It wasn't until 78 when mufflers left St Louis with no black-out. I don't recall if its Allen but there is a group that reproduces original looking exhaust systems for the early C3 Corvettes. So, your system could be one of those...but never blacked out.
Reply
Old Dec 22, 2011 | 08:55 AM
  #3  
9492's Avatar
9492
Thread Starter
Advanced
 
Joined: Oct 2011
Posts: 67
Likes: 0
Default

I should have mentioned in my original post that according to the Corvette 1968-82 Restoration Guide there is no mention of black-out on mufflers. It indicates that 70-72 mufflers had a galvanized finish. It shows several examples of non-restored mufflers with no black-out. I want my restoration to be as correct as possible and wanted to know which source is correct.
Reply
Old Dec 22, 2011 | 02:11 PM
  #4  
Easy Mike's Avatar
Easy Mike
Team Owner
Supporting Lifetime
20 Year Member
 
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
Default

Originally Posted by 9492
...I want my restoration to be as correct as possible and wanted to know which source is correct...
Go with the NCRS. They're blacked out on this 69:


Not blacked out on this 81:


Reply
Old Dec 22, 2011 | 02:31 PM
  #5  
Rowdy Rat's Avatar
Rowdy Rat
Safety Car
Veteran: Marine Corps
25 Year Member
Liked
Community Favorite
 
Joined: Dec 1999
Posts: 3,600
Likes: 837
From: PA
Default

Originally Posted by 9492
I should have mentioned in my original post that according to the Corvette 1968-82 Restoration Guide there is no mention of black-out on mufflers. It indicates that 70-72 mufflers had a galvanized finish. It shows several examples of non-restored mufflers with no black-out.
Every original exhaust that I've seen on a 1968 to 1972 Corvette has the mufflers blacked out. White paper part number tags on each muffler/rear pipe assembly and each exhaust tip... Part numbers for the forward pipes stamped into the tubing at the rear of each pipe.

I want my restoration to be as correct as possible and wanted to know which source is correct.
There are no absolutely perfect aftermarket pipes/mufflers out there. Gardner's is the best, but still requires some work to make it look ok as far as judging goes. Even then, you'll probably lose a couple of points in NCRS judging.

Regards,

Stan Falenski
Reply
Old Dec 22, 2011 | 02:34 PM
  #6  
Alan 71's Avatar
Alan 71
Team Owner
15 Year Member
Active Streak: 120 Days
Community Influencer
Top Answer: 5
 
Joined: Sep 2006
Posts: 31,270
Likes: 4,362
From: Westminster Maryland
Default

Hi 9492,
I believe the mufflers did have some black-out paint on them. I believe it was on the lower portion, and rear, of the muffler seen when the car was sitting on the ground. The idea was to make the muffler less noticeable when looking at the car.
It was a very quick job as was the rest of the black-out.
If in fact you do have the exhaust system your car left St. Louis with I'd think the paint could be gone after all these years. A production line exhaust system is a REAL find!!!!
Regards,
Alan
Reply

Get notified of new replies

To muffler finish





All times are GMT -4. The time now is 10:14 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