Go Back   Corvette Forum > C3 Corvettes, 1968 - 1982 > C3 Tech/Performance
Sign in using an external account
Register Forgot Password?
Register Albums Search Today's Posts Mark Forums Read FAQ
Search
C3 Tech/Performance
V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette Sponsored by
VBP

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C6 Parts & Accessories
C5 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 04-30-2013, 01:02 AM   #1
jsholm2
CF Senior Member
 
jsholm2's Avatar
 
Member Since: Feb 2008
Default C3 exhaust suggestions

Hey Guys,

Looking to purchase some mufflers for my 75. My plan is order a stainless steel pipe kit (off road) to get rid of the cat converters and then bolt on aftermarket mufflers. I have been looking at the Magnaflow mufflers http://www.magnaflow.com/02product/universalmuffler.asp and also Borla mufflers http://www.borla.com/products/proxs_centercenter.html.

I want a good amount of sound even at idle. Can you please tell me what you have had success with? Also, I need to know the diameter of the pipe that was originally installed so that I can make it match up. I have found that some places have the pipe kits that are pre shaped to fit into these vettes. Please include any info that you have.
jsholm2 is offline   Reply With Quote
Old 04-30-2013, 05:18 AM   #2
Freddy76
CF Senior Member

 
Freddy76's Avatar
 
Member Since: Jan 2013
Location: Florida New York
Default

I just installed a conversion kit from Corvette Central. It has 2.5 inch pipes with Magnaflows .If you have stock exhaust manifolds , then the exhaust should fit pretty easy. The pipes start at 2 inch at the manifolds,then go to 2.5 the rest of the way. Easy install and they look and sound great.Very happy with my choice. I have a thread running in this forum , exhaust arrived today , check it out. Plus I had gotten really good advice from other forum members. Good Luck
Freddy76 is offline   Reply With Quote
Old 04-30-2013, 08:40 AM   #3
User-C3
CF Member
 
Member Since: Oct 2011
Location: Detroit Michigan
Trevor Mantkus
Default

I had magnaflow on my mine when I first purchased it, sounded clean with a bit of drone but not how I like a muscle car to sound. I switched to dual flowmaster super 44's and loved them, sounded so good. instead of running them all the way out the back and having the pipes drop low under the rear end I placed the mufflers flat under the floor, right where the seats are and then ran dumps before the rear end. I was having scraping issues because of how low my car is. If I did that again I would do turn outs and run thin long tips out the side before the wheels. But If your trying to keep it more stock then I'm sure one of the kits will make you happy. Could save some money laying it out yourself and having a shop bend some tubing and weld it up.
User-C3 is offline   Reply With Quote
Old 04-30-2013, 02:24 PM   #4
Mr Sidepipes
CF Senior Member
 
Mr Sidepipes's Avatar
 
Member Since: Feb 2005
Default

running an Allen off road exhaust on mine, price was right and they sound great.
http://www.allencorvetteexhaustsystems.com/
Mr Sidepipes is offline   Reply With Quote
Old 04-30-2013, 08:41 PM   #5
johnt365
CF Senior Member

 
johnt365's Avatar
 
Member Since: Dec 2004
Location: Austin Texas
Default

I went from a turbo style muffler to a straight through type like Mangnaflow. The mufflers on my car are considered generic Magnaflows or knock off's. Here some data, pics and a video for sound.
Click the image to open in full size.

What they sound like on a car with a small block and headers.


Some flow data of the Magnaflow Vs Jones Exhaust

johnt365 is offline   Reply With Quote
Old 05-01-2013, 11:52 AM   #6
Hop's 78
Junior Member
 
Hop's 78's Avatar
 
Member Since: Apr 2012
Default

I have flowmaster 40's and they give a nice "old school" sound.
Hop's 78 is offline   Reply With Quote
Old 05-01-2013, 12:05 PM   #7
qwank
CF Senior Member

 
qwank's Avatar
 
Member Since: Feb 2011
Location: Southern NH
Default

flowmaster
qwank is online now   Reply With Quote
Old 05-01-2013, 12:20 PM   #8
Tim H
CF Senior Member
 
Tim H's Avatar
 
Member Since: Oct 2000
Location: Southern Indiana
Default

Flowmasters if you want to sound like a real hot rod, anything else to sound like a 73 Ford pickup with a 3 on the tree.
__________________
1976 Stingray, 350, 4 speed, 750 Holley, Comp Cams 474 lift, 276/284, Professional Products polished "crosswind" intake, Summit headers, Flowmasters!
Tim H is offline   Reply With Quote
Old 05-01-2013, 12:37 PM   #9
pauldana
CF Senior Member
Support Corvetteforum!
 
pauldana's Avatar
 
Member Since: May 2003
Location: palmdale ca
Default

2 3/4" manderal bend exhaust, Borla 3" mufflers and an X-pipe for me...... 7K RPM shifts....


IMHO, 3" was to big to deal with with out C3's and 2.5" was to small for my needs....

good luck brother!!!


p:-)
__________________
Baby......

"Supreme Allied Commander" California Stingrays 2011-2012
Used to love smoking ricers... now i love smoking Ferrari's ;-)

The biggest C3 run in SoCal 4 years running!!! come join us NEXT YEAR 2014!!!
pauldana is offline   Reply With Quote
Old 05-01-2013, 01:04 PM   #10
jsholm2
CF Senior Member
 
jsholm2's Avatar
 
Member Since: Feb 2008
Default

Quote:
Originally Posted by Freddy76 View Post
I just installed a conversion kit from Corvette Central. It has 2.5 inch pipes with Magnaflows .If you have stock exhaust manifolds , then the exhaust should fit pretty easy. The pipes start at 2 inch at the manifolds,then go to 2.5 the rest of the way. Easy install and they look and sound great.Very happy with my choice. I have a thread running in this forum , exhaust arrived today , check it out. Plus I had gotten really good advice from other forum members. Good Luck
Thanks Freddy 76. That's the same kit I've been looking at. Seems like it would be a relatively simple install and everything is shaped the way it needs to be to fit in.

Has anyone heard these vettes with borla mufflers? It seems to be a rare thing to find. The PRO XS mufflers would probably sound nice on these cars but I'd hate to try them without hearing to compare.
jsholm2 is offline   Reply With Quote
Old 05-01-2013, 03:01 PM   #11
jim-81
CF Senior Member

 
jim-81's Avatar
 
Member Since: Dec 2011
Location: Chardon Ohio
Default

Quote:
Originally Posted by Freddy76 View Post
I just installed a conversion kit from Corvette Central. It has 2.5 inch pipes with Magnaflows .If you have stock exhaust manifolds , then the exhaust should fit pretty easy. The pipes start at 2 inch at the manifolds,then go to 2.5 the rest of the way. Easy install and they look and sound great.Very happy with my choice. I have a thread running in this forum , exhaust arrived today , check it out. Plus I had gotten really good advice from other forum members. Good Luck
I have this system and love it.
jim-81 is offline   Reply With Quote
Old 05-02-2013, 07:51 PM   #12
0MagnaFlow
Former Vendor
 
Member Since: Apr 2005
Default

We're glad so many of you are happy with your MagnaFlow systems! We want to make sure you have the quality you need - and of course, the sound and power you want!
MagnaFlow is offline   Reply With Quote
Old 05-02-2013, 08:01 PM   #13
cuisinartvette
CF Senior Member
St. Jude Donor '05
 
Member Since: Oct 2004
Location: Chatsworth Ca.
Default

So hard to tell from clips exactly what yours wil sound like.

Cam profile headers/manifolds hp level etc ALL has a changing effect on the note. Even tuning can change the note

If it was up to me Id change mufflers like mood swings

Pick the sound you like dont worry about power youll probably never notice a difference until you get waaaaay up there in power levels
cuisinartvette is offline   Reply With Quote
Old 05-02-2013, 08:10 PM   #14
MAXCO
CF Senior Member

 
MAXCO's Avatar
 
Member Since: Jul 2012
Location: St. Catharines Ontario
MaxRBailey
Default

Here's a couple videos of my '78 with Borlas during the corvette corral pace lap at the Mosport ALMS race last year.


I think I fixed the links.

Last edited by MAXCO; 05-02-2013 at 08:18 PM.
MAXCO is offline   Reply With Quote
Old 05-02-2013, 08:23 PM   #15
harveyhalabookie
CF Senior Member

 
Member Since: Feb 2011
Default

Quote:
Originally Posted by jim-81 View Post
I have this system and love it.
harveyhalabookie is offline   Reply With Quote
Old 05-02-2013, 09:45 PM   #16
pauldana
CF Senior Member
Support Corvetteforum!
 
pauldana's Avatar
 
Member Since: May 2003
Location: palmdale ca
Default

Quote:
Originally Posted by MAXCO View Post
Here's a couple videos of my '78 with Borlas during the corvette corral pace lap at the Mosport ALMS race last year.

http://youtu.be/V83NaMK6QH8
http://youtu.be/tEs21S_31M8

I think I fixed the links.
Borla!!! All the way brother!!!!

Hey... You cruiseing with us the plastic fantastic?!?!
__________________
Baby......

"Supreme Allied Commander" California Stingrays 2011-2012
Used to love smoking ricers... now i love smoking Ferrari's ;-)

The biggest C3 run in SoCal 4 years running!!! come join us NEXT YEAR 2014!!!
pauldana is offline   Reply With Quote
Old 05-02-2013, 09:45 PM
 
Go Back   Corvette Forum > C3 Corvettes, 1968 - 1982 > C3 Tech/Performance
Reload this Page C3 exhaust suggestions
 
 
 
Reply


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -4. The time now is 10:28 PM.


Emails & Password Backup

Search Engine Friendly URLs by vBSEO 3.5.2