Muffler's for a nice rumble? - Pontiac GTO Forum
Pontiac GTO Pontiac GTO Forum

» Auto Insurance
Wheel & Tire Center

Go Back   Pontiac GTO Forum > The 1964-1974 Pontiac GTO > 1964-1974 GTO General Discussion
Register Home Forum Active Topics Photo Gallery Garage Search Today's Posts Mark Forums Read Auto EscrowInsurance

GtoForum.com is the premier Pontiac GTO Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 12-24-2012, 09:31 PM   #1 (permalink)
 
poncho power's Avatar
 
Join Date: Nov 2012
Posts: 77
My Photos: (0)
Garage
Muffler's for a nice rumble?

My 68 Lemans has a 350 in it. I really don't want to deal with the headache's of headers. I was wondering if there is a clear favorite out there for mufflers that give the car a nice sounding rumble? The car basically has new exhaust on it from the engine all the way back, but I'm not real impressed with the sound of the exhaust. Any suggestions?
poncho power is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-25-2012, 10:36 AM   #2 (permalink)
Super Moderator
 
ALKYGTO's Avatar
 
Join Date: Mar 2010
Location: Wentzville, Mo.
Posts: 2,384
My Photos: (6)
Garage
I would say the ever popular Flowmasters (three chamber) or I have the Hooker Aerochamber mufflers on mine. Reasonably priced and very well constructed.

Or if you want it LOUD put on some Purple Hornies.
__________________
ALKYGTO is online now   Reply With Quote
Old 12-25-2012, 10:50 AM   #3 (permalink)
 
kilkm68's Avatar
 
Join Date: May 2011
Location: Peoria, IL
Posts: 199
My Photos: (10)
Garage
Cherry Bombs- disturbing the peace since 1968
kilkm68 is offline   Reply With Quote
Old 12-25-2012, 11:05 AM   #4 (permalink)
 
FlambeauHO's Avatar
 
Join Date: Nov 2011
Location: Pensacola, FL
Posts: 1,064
My Photos: (5)
I second the Flowmasters three chamber vote.
FlambeauHO is offline   Reply With Quote
Old 12-25-2012, 04:02 PM   #5 (permalink)
 
jmt455's Avatar
 
Join Date: Mar 2012
Location: SE Michigan
Posts: 688
My Photos: (0)
Here's a different point of view...
I am not a fan of the Flowmaster sound; I prefer the sound (and flow rates) of either the Goerlich XLerator or DynoMax Welded Ultra-Flo.

They are not as brash as the Flowmaaster.
__________________
1968 Pontiac GTO
1983 Pontiac Bonneville (G) wagon
2008 Pontiac G8 base
jmt455 is online now   Reply With Quote
Old 12-25-2012, 04:48 PM   #6 (permalink)
 
d50h's Avatar
 
Join Date: May 2009
Location: Katy Texas
Posts: 92
My Photos: (0)
Quote:
Originally Posted by kilkm68 View Post
Cherry Bombs- disturbing the peace since 1968

the shorter the louder
__________________
2006 QSM/RED/M6/18"David
d50h is offline   Reply With Quote
Old 12-26-2012, 02:36 PM   #7 (permalink)
Super Moderator
 
BearGFR's Avatar
 
Join Date: Aug 2008
Location: Springtown, TX
Posts: 4,467
My Photos: (12)
Garage
A lot of the sound is dependent on the characteristics of the engine and the rest of the exhaust system.

I'm running headers, Pypes 2 1/2" exhaust, X-pipe, and Pypes Race-Pro mufflers. Here's a couple of links where you can hear what it sounds like.
(skip forward to about 1:36)

Bear
__________________
BearGFR
Garland, TEXAS
BearGFR is offline   Reply With Quote
Old 12-26-2012, 04:43 PM   #8 (permalink)
 
Join Date: Dec 2010
Location: Austria
Posts: 555
My Photos: (0)
Garage
I would like to know how a GTO sounds with magnaflow mufflers.. here is a short clip of mine with the Flowmasters.. (I found a test online where they checked how loud some mufflers are and for performance.. no signs that flowmasters flow worse than most others! If I find it again I will post it)

Chris-Austria is offline   Reply With Quote
Old 12-28-2012, 11:30 AM   #9 (permalink)
 
Join Date: Dec 2009
Location: Phoenix, AZ
Posts: 49
My Photos: (0)
The 2 1/2" system on my '67 was bent to original specs, but with an "H" pipe and the shorter body DynoMax SuperTurbo's - I also have HO manifolds. After a lot of looking, I found some data that indicated the DynoMax SuperTurbos can provide zero flow restriction up to abot 185 HP per muffler - that works out about right for my ~360 HP 400 engine. They make a great sound, although there was an obnoxious "drone" around 1600 RPM at light throttle (cruise in O/D at about 50 MPH). I had noticed the same thing on another car I put those mufflers on and that issue seems to have gone away as I put miles on the car. Or maybe I just learned not to drive at that speed/load combo :-) I think the drone is getting less as I drive the GTO, too.
The headpipes are 2 1/4" in order to have enough clearance where the frame, starter & suspension monting points make for a tight fit.
TommyG67 is offline   Reply With Quote
Old 12-31-2012, 11:14 AM   #10 (permalink)
 
Join Date: Dec 2011
Location: Perry Hall, MD
Posts: 87
My Photos: (0)
I went with Flowmaster Super 44's and love the deep rumble but I get a drone from 1800-2200 RPM. I have 2.5" pipes.
__________________
400/400
10 Bolt w/3:55 posi
Expresso Brown w/Gold Interior
jimchevy is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac GTO > 1964-1974 GTO General Discussion


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Whats the best muscle rumble muffler? fusser87 Intake and Exhaust Discussions 12 05-07-2009 09:53 PM
Nice 64 Just Listed Koppster 1964-1974 GTO General Discussion 7 02-08-2009 12:37 PM
nice cop car Tower The Lounge 1 10-15-2006 08:28 AM
Blower motor loud rumble noise?? cat1055man Service, Maintenance and Technical Discussion 1 07-16-2006 11:48 AM
LS-2 GTO exhaust rumble vs. GT Mustang exhaust rumble tiger gto Intake and Exhaust Discussions 10 03-31-2006 07:10 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 09:53 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.