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Magnaflow -vs-Flowmaster-vs-DynoMax

twamd80driver

Well-known member
Joined
Sep 29, 2004
Messages
102
Location
Cleveland, OH
Corvette
1976 L-82 4-Speed
Given:

1976 L-82 4 speed
True Dual Stainless Exhausts 2.5"

No Other Modifications except I am getting rid of the two cats and putting strait pipes in.

Which Muffler? Webber Racing is telling me the Magnaflow 11226 Universal? I want a good sound, but not too loud, and a good breather....Can anyone shed some light on this choice?
Thanks in advance!
 
M

MusclesWit350

Guest
I tried MagnaFlows and I hated it. Too quiet not much over stock.... I say go with Flowmasters or no mufflers at all... Just my 2cents

Kyle
 

Garagetoyz

Well-known member
Joined
Sep 20, 2005
Messages
53
Location
New Jersey
Corvette
78 Silver Anniversary 4 spd Crate engine
I put on dynomax with blackjack headers. Nice rumble at idle but they are a bit more quiet than I wanted, however the HP increase over stock is remarkable. The sound was described to me by a friend as I blew past him at full throttle as being "throaty". I dont mind as I like the sound of the Holley wide open anyway. Good luck
 
Joined
Nov 23, 2002
Messages
1,060
Location
Motorcity USA
Corvette
1973 L-48 Coupe
I have Flowmasters with factory tips out the back...looks and sounds great.
I did my carpet and added underlayments trying to block out some of the heat from my headers.The heat still finds its way in, just takes longer....but the added benifit is sound proofing.It makes the flowmasters very quiet in the cab when im at highway speeds.
Good Luck, Chas
 

Space Cowboy

Well-known member
Joined
Oct 8, 2003
Messages
408
Location
Houston Texas
Corvette
1968 Convertible - Candy Apple - 427/475+
I have Flowmaster Delta 40's on my 427... they sound great. Not too loud either. I think the Delta 50's would be way too loud.
 
R

rsmlap

Guest
I'm happy with the Magnaflows. Would not want it to be too much louder on long drives. MUCH better than stock.
 

Koop

Well-known member
Joined
Mar 16, 2005
Messages
545
Location
Kalifornia
Corvette
YELLOW 69 modified GM Crate ZZ383, LS2 TBSS
I have Magnaflows with thorley headers. This set up is reasonably quiet until you put your foot in it, step in it hard and it's LOUD and MEAN! I was pulled over by a cop that wanted to know what set up I had in the car so he could make his Vette sound like mine (he also gave me a slow it down warning).

I have a '69 so the only Cats on my car are stuck to the tires. (Hmmm, that explains that squealing I've been hearing).
 

waterboy1976

Well-known member
Joined
Aug 18, 2003
Messages
510
Location
Cleveland,Ohio
Corvette
1973 4-speed Coupe FOR SALE/ SOLD!!!!
Heya TWA.....I have flowmaster 40s on my 73.....you should come out and hear it in person I live in Elyria.... Weber built my motor....
 
Joined
Feb 25, 2003
Messages
887
Location
Clarksville, Tennessee
Corvette
1979 Bright Red L-82
:upthumbs I just put new ones on mine and I love the sound....I used Flowmaters #40.
 

Koop

Well-known member
Joined
Mar 16, 2005
Messages
545
Location
Kalifornia
Corvette
YELLOW 69 modified GM Crate ZZ383, LS2 TBSS
I've had Flowmasters, the sound great. They just put to much noise into the interior for me. I like the way the Magnaflow directs the sound out the back and the MF has much less drone at hwy speeds.

Eitherway the car will sound much better than stock.
 

Nut

Well-known member
Joined
Oct 15, 2000
Messages
890
Location
Bowie, MD
Corvette
Vette-less for now
I have Flowmaster Delta 40's on my 427... they sound great. Not too loud either. I think the Delta 50's would be way too loud.


The Flowmaster Delta 50's are not bad at idle; actually they sound awesome along with my Blackjack headers too. They will get a little loud at certain hwy speeds; but then again...... that was a good excuse to buy a new stereo and speakers upgrade :D I had Magna Flows I bought from Evolution1980 (Andre) and they were just too quiet. Go with the Flows.

......... nut
 

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