Looking at putting true duals on my '80 this coming Saturday. I've got the stock GM Goodwrench 350 under the hood. Trying to get a general consensus on which mufflers to go with. Looking for that low rumble at idle and a good (but not an obnoxiously loud sound (ie. cop getting attention ) sound when accelerating. No resonance is preferred. I'm leaning towards the Flowmaster Delta 40 Series but I'm open to any suggestions. Thanks in advance.



Jay

PS For those of you who use "other" mufflers, please list those if you don't mind. Thanks!

 

I have the Ultraflows but I don't think they are what you are looking for. They have a fairly quiet idle and cruise and only open up and become loud when you step on it.

 

If you don't want resonances don't get Flowmasters.

The UltraFlow is a 'straight thru' design. If that's too quiet for you you can insert a pipe (i.e. 1/4 of the muffler lenght) to make it louder. The 3" ID mufflers are the best - a 3" OD pipe fits perfectly in there

 

I always get compliments on my Chambered set-up.

 

I'm going to go (relatively soon) with the Hooker Aero Chambers...441 cfm, and they aren't as loud as some of the flow masters...best of both worlds.
Plus they're a bargain at around $50 a piece.

trw

 

OEM..................................... ........................................ ...225
Gibson SuperFlow 788200.................................. ............311
TTS Bullet Cat Converter............................... ..................324
Flowmaster 40 series 42540................................... .......352
Flowmaster 50 Series.................................. ...................362
Flowmaster 40 series 43040................................... .......392
Dynomax Super Turbo................................... .................410
Flowmaster 62631................................... .......................435
Carsound Cat Converter............................... ..................436
FLP Cat Converter............................... ............................440
Edelbrock Victor 5535.................................... ..................562
Flowmaster 40 series 435409.................................. ........576
Edelbrock RPM series 5511.................................... ..........579
Flowmaster Delta Force Racing 54040-10........................634
Edelbrock 304 series 5560.................................... ...........640
Edelbrock Gen App 5505.................................... ..............708
Dynomax Race Magnum Welded 17216...........................711
Borla XR-1 40600................................... ..........................836
Borla XR-1 40615................................... ..........................854
Dynomax UltraFlow SS 17263................................... .......1000
Dynomax Race Magnum Welded 17218...........................1000
Borla XR-1 40575................................... ..........................1100
Dynomax UltraFlow............................... ...........................1133
Edelbrock Victor 5537.................................... ..................1400
Borla XR-1 40450................................... ..........................1400
Borla XR-1 40741................................... ..........................1450
Dynomax UltraFlow SS 17296, 17268..............................2200
Dynomax Race Magnum Welded 17220, 17224...............2200
Dynomax Race Magnum Welded 17225...........................2600

Source-??? (I found this on the DC Forum a while back)

 

Looks like "other" is the winner.

Should have let other entries into poll.

Now you will never know.

 

I am wanting to hear a set of 40 Delta Flows. I would like for mine to be a little louder during accelleration. Right now at cruise, the car just goes away and all you hear is wind noise. I have shorty headers, 2 1/2 exhaust to stock style mufflers.

 

I'm sorry to be negative here but loud exhaust on low compression motors sounds like a UPS truck to me. Keep to the quieter versions and you'll be happy. I wish I knew what the mufflers were on my car but they sound pretty good (like a mid 60's vette). They were welded to the stock pipes when I got the car. Joe

 

I have the ultra-flos on my '82. Sound awsome when I open it up. I have 40 series on my truck and the resonance will drive you mad at certain RPM.

 

Magnaflow's are real nice, Nice low rumble, seemed too quiet at first but after a couple weeks but now they are great, not too loud. IMO is you want loud go with the Flowmaster's.

 

Borla's...

 

here'w what MAD 2.5" chambered sounds like with headers, hooked up to my 383. Low quality audio/video, doesn't do it justice, but you get the idea. If you don't want LOUD, don't buy these

http://home.swfla.rr.com/woot/images/Movie.wmv

 

Last Saturday I had Dynomax ceramic headers put on and 2.5" pipes with super 40 flowmasters and I love it! There not loud and annoying, they sound awsome when your just sitting there at a stop light, and there not loud at all when you get going. There perfect to me.

 

 

Old Engine setup (GW350)
http://students.engr.scu.edu/~sbeeby/steveRun1.wmv
http://students.engr.scu.edu/~sbeeby/steveRun2.wmv

New Engine setup (GW350, AFR 195s, 216/216/110* cam)
http://students.engr.scu.edu/~sbeeby/vette.mp3

True dual 2.5" Dynomax Ultra Flos with dual cats. ~8:1 compression.

-Steve

 

For you guys running the Ultraflows.....do they tuck up under the body or hang down like the stock mufflers?

Bill

 

Well, after doing additional research on the net, reading your comments here and talking with the exhaust man, it appears that the Flowmasters are out and Magnaflows will be going in. The best thing I found out today was the exhaust man said that if I wasn't happy with the sound he would exchange mufflers for me for no additional charge. He said he wouldn't do that for just anybody but those with nice cars like the vette he'd make an exception. Needless to say it made my day!
I'll try and post a before and after sound clip if I can figure out how to make one. Thanks for all your inputs.



Jay

 

 

Thanks Pacin', very nice installation. Looks much better up inside like that than mine.