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

73 replacement muffler

Thread Tools
 
Search this Thread
 
Old Oct 14, 2004 | 10:05 PM
  #1  
dans73ttop's Avatar
dans73ttop
Thread Starter
Intermediate
15 Year Member
 
Joined: Sep 2004
Posts: 49
Likes: 0
From: Philadelphia Pa
Default 73 replacement muffler

I am trying to replace the passenger side muffler on my 73 4 speed. i just want to get it running and will replace entire system later. I went with volunteer vette. But I am not happy. They sent me a muffler that in my opinion is wrong. The outlet end is off center and will not fit into opening with bezel. It seems to me that the outlet must be centered in the muffler. Does anyone have a pic of their original exhaust system to compare?
Reply
Old Oct 14, 2004 | 10:18 PM
  #2  
Petes73's Avatar
Petes73
Racer
25 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Mar 2001
Posts: 272
Likes: 3
From: Marion Ia
Default

No picture I have chambered pipes on mine, but if I remeber correctly the outlet is off set. The extension inlet is to one side instead of centered.
Reply
Old Oct 14, 2004 | 10:19 PM
  #3  
jcswm's Avatar
jcswm
Melting Slicks
 
Joined: Jan 2004
Posts: 2,527
Likes: 1
From: St. Petersburg, Fl///Columbus, Ohio
Default

Damn..... the trash man hauled my rusted out origional exhaust away TODAY!!!
I've kept EVERY origional piece off my car EXCEPT the exhaust.
There is a few '73 4-speed owners on here... hopefully someone elese will be able to share a pic.
Damn..... I can't throw anything away!!!
Reply
Old Oct 14, 2004 | 10:24 PM
  #4  
trw's Avatar
trw
Melting Slicks
20 Year Member
 
Joined: May 2000
Posts: 2,125
Likes: 9
From: Crescent City, CA
Default

Just looked at mine.

Both inlets and outlets are off center to the center of the car. Exhaust tips are centered on a 73, 70-72 use off center tips.

Hope this helps.
Terry
Reply
Old Oct 14, 2004 | 10:30 PM
  #5  
dans73ttop's Avatar
dans73ttop
Thread Starter
Intermediate
15 Year Member
 
Joined: Sep 2004
Posts: 49
Likes: 0
From: Philadelphia Pa
Default

Thanks guys,
This muffler is supposed to be for a 73 Evidently they use a standard body and weld the correct tip configuartions. They are trying to tell me that the outlet tip is supposed to be offcenter on the muffler but it just wont fit. it appears that I have the original system. The key is the outlet placement on the muffler body. They say it is correct and want me to pay shipping to send it back. I am not happy with this company. I dont think I will use them again. I dont think they actually crawl underneath any cars that they sell parts for.
Reply
Old Oct 14, 2004 | 11:04 PM
  #6  
Patrick73's Avatar
Patrick73
Burning Brakes
 
Joined: Aug 2004
Posts: 856
Likes: 2
From: Tyler Texas
Default

Dan: I have never purchased from Volunteer, but have heard good things about them re 1973 mufflers. My current 1973 mufflers have center outlets; and the chrome 73 exhaust tips are also centered.

The 71-72 tips are off centered as stated by TRW. The 73 mufflers and the 71-72 mufflers are different! In fact, if you wanted to use 71-72 chrome exhaust tips, you would need the 71-72 muffler to go with them.

Let us know how this problem comes out. All 73 owners have the same issue.
Reply
Old Oct 15, 2004 | 11:54 AM
  #7  
kdf1986's Avatar
kdf1986
Safety Car
20 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Jun 2004
Posts: 4,652
Likes: 80
From: Lakeland Florida
Default Exhaust

I have a 1973 and I think the muffler and exhaust tips should be offset, not centered.

The 70-72 exhaust tips appear to be straight, but the 73 exhaust tips are offset, and at an angle. In most parts books the 73 exhaust is listed separately due to this change.

kdf 1973 454
kdf 1986 L98
Reply
Old Oct 15, 2004 | 12:19 PM
  #8  
JLMvette73's Avatar
JLMvette73
Instructor
 
Joined: Jun 2003
Posts: 182
Likes: 0
From: Clinton Indiana
Default

The openings for a '73 are centerd in the tips. The inlet pipe of the tip should be angled inward towards the center of the car to attach to the outlet pipe of a correct '73 muffler. I have both a set of both SS repo tips & a set of NOS chrome tips that are made with this configuration.
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 Oct 16, 2004 | 01:21 AM
  #9  
Patrick73's Avatar
Patrick73
Burning Brakes
 
Joined: Aug 2004
Posts: 856
Likes: 2
From: Tyler Texas
Default

Jerry: Where did you purchase the correct configuration 73 mufflers for your car? Are your mufflers the "stock" round appearance ones or the "hideway"/71-72 type? Patrick
Reply
Old Oct 17, 2004 | 12:45 PM
  #10  
dans73ttop's Avatar
dans73ttop
Thread Starter
Intermediate
15 Year Member
 
Joined: Sep 2004
Posts: 49
Likes: 0
From: Philadelphia Pa
Default

Ditto Jerry, Volunteer vette apparently does not want to talk to me anymore. Can anyone recommend anyone else to purchase a replacement muffler that I can trust to be correct. I believe I have the smaller hideaways but am not sure. I am going to take a pic of the left side which is still intact and ask for comment
Reply
Old Oct 18, 2004 | 10:02 AM
  #11  
JLMvette73's Avatar
JLMvette73
Instructor
 
Joined: Jun 2003
Posts: 182
Likes: 0
From: Clinton Indiana
Default

Originally Posted by Patrick73
Jerry: Where did you purchase the correct configuration 73 mufflers for your car? Are your mufflers the "stock" round appearance ones or the "hideway"/71-72 type? Patrick
I have an older set of the smaller "hideaway"style on the car. Actually, I tend to believe they are Walker "turbo muffler" style mufflers. They do have the correct '73 outlet pipe configuration.

Jerry
Reply
Old Oct 18, 2004 | 10:24 AM
  #12  
JLMvette73's Avatar
JLMvette73
Instructor
 
Joined: Jun 2003
Posts: 182
Likes: 0
From: Clinton Indiana
Default

Originally Posted by dans73ttop
Ditto Jerry, Volunteer vette apparently does not want to talk to me anymore. Can anyone recommend anyone else to purchase a replacement muffler that I can trust to be correct. I believe I have the smaller hideaways but am not sure. I am going to take a pic of the left side which is still intact and ask for comment
I looked at the mufflers that Corvette Central sells for '73s at Bloomington this year. They looked to have the correct outlet configuration. When speaking with the folks from CC, they were quite aware of the difference in '73 mufflers. And I'm fairly certain that they offered both the original OEM style round muffler and a smaller aftermarket muffler. I think you'll find that the outlet on a '73 muffler is offset, rather than centered on the end of the muffler, but is so designed that it lines up fairly close to the center of the exhaust opening bezel on the lower rear valance. Thus my comment about the inlet pipe on the exhaust tip needing to be slightly bent inward toward the center of the car. Without seeing the muffler that you received from VV, it's hard to tell if the one they sent you is or isn't correct. I do know that VV is a quite dependable parts supplier, but then everyone makes mistakes. You might also consider contacting Allen's exhaust. They definitely know whats going on with vette exhaust systems and sell quality merchendise..........
Reply
Old Oct 18, 2004 | 10:35 AM
  #13  
JLMvette73's Avatar
JLMvette73
Instructor
 
Joined: Jun 2003
Posts: 182
Likes: 0
From: Clinton Indiana
Default

I have an excellent picture of a driverside, round, OEM muffler with the OEM style chrome tip. If any of you want to see it, post an email addy for me to send it to.............
Reply
Old Oct 19, 2004 | 08:39 PM
  #14  
dans73ttop's Avatar
dans73ttop
Thread Starter
Intermediate
15 Year Member
 
Joined: Sep 2004
Posts: 49
Likes: 0
From: Philadelphia Pa
Default

I talked to vv and they finally agreed that the outlet side of muffler should be centered. They said they to a 73 specialist in the area and he agreed. They are taking the muffler back and I am sending the old muffler which they will try to match. It doesn't sound like this area is their strong point. They rely on an outside guy who is a book guy only.
Reply
Old Oct 19, 2004 | 11:27 PM
  #15  
Patrick73's Avatar
Patrick73
Burning Brakes
 
Joined: Aug 2004
Posts: 856
Likes: 2
From: Tyler Texas
Default

Dan: Thank you for the update. Keep us posted. I will be curious to see what muffler is now sent to you. I looked at my 73 muffler again--outlet on muffler is centered; I have stock 73 chrome exhaust tips (not 70-72's!).
Reply
Old Oct 21, 2004 | 08:44 PM
  #16  
dans73ttop's Avatar
dans73ttop
Thread Starter
Intermediate
15 Year Member
 
Joined: Sep 2004
Posts: 49
Likes: 0
From: Philadelphia Pa
Default

Hello all,
I am educating myself very quickly whether I want to or not. The difference appears to be in the stainless tips. The 70 to 72 tips have the connector on the side. The 73 has the connector dead center. If you look at some the catalogs selling mufflers they will tell you that if you are buying the muffler for a 73 you must use a 70 to 72 tip. In other words they are not selling you a true 73 muffler which requires an outlet centered for the 73 centered tip.
Reply
Old Oct 21, 2004 | 08:59 PM
  #17  
trw's Avatar
trw
Melting Slicks
20 Year Member
 
Joined: May 2000
Posts: 2,125
Likes: 9
From: Crescent City, CA
Default

1973 Aluminized 2.5" Mufflers
Part# 20547



This is Eckler's stockreplacement. As I see them the inlet and outlets are not centered. The pipe in the tip is centered.

Terry
Reply

Get notified of new replies

To 73 replacement muffler





All times are GMT -4. The time now is 05:24 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