Quiet muffler recommendation. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

formula_raider · 03-01-2006, 12:13 AM

I know this subject will bring alot of different opinions but I just thought I would give it whirll!
I am ready to put in my exhaust system, after a full engine build up. I am going with a 2 1/2" dual exhaust with long tube headers. I am running the exhaust through the body infront of the rear tires. I am really concerned about the noise because the outlet of the exhaust. I want something that has a nice tone but not loud or alot of resonance. I had flowmaster 40s previously and they are way too loud. I am debating between the flowmaster delta 50's or possibly the new Magnaflow 3-chamber XL Turbo muffler. Anybody have a good suggestion. I still need it to flow well, I will be pushing over 400HP.

dougs69c10 · 03-01-2006, 12:30 AM

delta series are a good quiet, yet decent flowing mufflers, hadnt had any experience with the xl turbos.

4x4Poet · 03-01-2006, 03:36 AM

spintechmufflers.com/spintech/spintechindex.asp

Bowtie67 · 03-01-2006, 07:34 AM

Couple things here, one is to use an X-pipe or and H-pipe, these do help keeping the noise down, the other might be using the new HushPower 2 mufflers by flowmaster, they have a nice compact design and according to their sight, they have less interior resonance, I ran the big block 70 series on my small block last year and they where pretty tame cruising and you deffinately new it when you got into it, they also had a nice idle tone, but with thte cam in mine it's pretty hard not to get noticed.

ed455 · 03-01-2006, 07:45 AM

Magnaflow has a great tone without being harsh. The larger the muffler, the quieter they are. I have 3" exhaust, which is hard to make reasonably quiet. I went with Magnaflows biggest 3" muffler. It's stainless steel and they are made for motor homes. They really are big though.

cdowns · 03-01-2006, 10:32 AM

i've always used plain old generic "turbo" mufflers @ about $20 each worked good for me

boundstaffpress · 03-01-2006, 11:01 AM

My favorite sound so far was my chevelle with dynomax super turbos on a 350. 2.5" tubes with an H pipe and shorty dynomax headers. Very even with a low raspy tone that I could drive through town at night.

davidh · 03-01-2006, 12:10 PM

I have some fully welded Dynamax mufflers can't remember there exact name they were the $50 each ones they are quiet. Summits house brand $20 and fully welded $45 ea (on my 63 bel-air) are quiet too. As long as they are running all the way out back I think you're ok. Mufflers then dumped at the rear axle will never be quiet.

Jason915 · 03-02-2006, 12:21 PM

I like the Dynomax Super Turbo's they have a nice mellow sound to them.

03-01-2006, 12:13 AM	#1
formula_raider Registered User Join Date: Nov 2005 Location: San Marcos, Tx Posts: 62	Quiet muffler recommendation. I know this subject will bring alot of different opinions but I just thought I would give it whirll! I am ready to put in my exhaust system, after a full engine build up. I am going with a 2 1/2" dual exhaust with long tube headers. I am running the exhaust through the body infront of the rear tires. I am really concerned about the noise because the outlet of the exhaust. I want something that has a nice tone but not loud or alot of resonance. I had flowmaster 40s previously and they are way too loud. I am debating between the flowmaster delta 50's or possibly the new Magnaflow 3-chamber XL Turbo muffler. Anybody have a good suggestion. I still need it to flow well, I will be pushing over 400HP.

03-01-2006, 12:30 AM	#2
dougs69c10 Registered User Join Date: Feb 2006 Location: Birmingham,Alabama Posts: 260	Re: Quiet muffler recommendation. delta series are a good quiet, yet decent flowing mufflers, hadnt had any experience with the xl turbos. __________________ 1969 c10 stepside 250 inline six, 4speed granny tranny, 4.11 posi rear end

03-01-2006, 03:36 AM	#3
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	Re: Quiet muffler recommendation. spintechmufflers.com/spintech/spintechindex.asp __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.

03-01-2006, 07:34 AM	#4
Bowtie67 Registered User Join Date: Jan 2004 Location: NH Posts: 2,266	Re: Quiet muffler recommendation. Couple things here, one is to use an X-pipe or and H-pipe, these do help keeping the noise down, the other might be using the new HushPower 2 mufflers by flowmaster, they have a nice compact design and according to their sight, they have less interior resonance, I ran the big block 70 series on my small block last year and they where pretty tame cruising and you deffinately new it when you got into it, they also had a nice idle tone, but with thte cam in mine it's pretty hard not to get noticed. __________________ 1967 C10 - SWBSS Pro Street 427sbc, 700R4 & 4.10 Gears 1948 Chevy FleetMaster Coupe, LS1, (almost done) 1950 Chevy StyleLine Coupe 250/6 3x2 Dueces 2009 Toyota Tundra 1996 Harley RoadKing "I maybe getting old, but I can still burn rubber with the best of them"

03-01-2006, 07:45 AM	#5
ed455 Captain Ed Join Date: Jul 2003 Location: Port Charlotte, FL Posts: 1,241	Re: Quiet muffler recommendation. Magnaflow has a great tone without being harsh. The larger the muffler, the quieter they are. I have 3" exhaust, which is hard to make reasonably quiet. I went with Magnaflows biggest 3" muffler. It's stainless steel and they are made for motor homes. They really are big though. __________________ If you ain't bleedin', you ain't workin'! 1999 C3500 LS 7.4L

03-01-2006, 10:32 AM	#6
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Quiet muffler recommendation. i've always used plain old generic "turbo" mufflers @ about $20 each worked good for me __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

03-01-2006, 11:01 AM	#7
boundstaffpress Jamie Hyneman is my twin Join Date: Nov 2005 Location: La Junta, Colorado Posts: 705	Re: Quiet muffler recommendation. My favorite sound so far was my chevelle with dynomax super turbos on a 350. 2.5" tubes with an H pipe and shorty dynomax headers. Very even with a low raspy tone that I could drive through town at night. __________________ Justin SOLD 1967 K10 Fleetside, 283, Front and Rear Posi SOLD Color Wiring Diagrams Now in High Resolution V8 and Cab and Cab and Chassis

03-01-2006, 12:10 PM	#8
davidh Senior Member Join Date: Feb 2004 Location: Ponca city now kingfisher Oklahoma Posts: 1,221	Re: Quiet muffler recommendation. I have some fully welded Dynamax mufflers can't remember there exact name they were the $50 each ones they are quiet. Summits house brand $20 and fully welded $45 ea (on my 63 bel-air) are quiet too. As long as they are running all the way out back I think you're ok. Mufflers then dumped at the rear axle will never be quiet.

03-02-2006, 12:21 PM	#9
Jason915 Registered User Join Date: Jan 2005 Location: Colorado Springs Posts: 693	Re: Quiet muffler recommendation. I like the Dynomax Super Turbo's they have a nice mellow sound to them. __________________ 1971 GMC K1500 SWB Fleetside, 4" skyjacker softride and, 14 Bolt FF, HD Dana 44 4.10's 1970 K5 TBI conversion lifted etc SOLD 1968 C20 camper truck SOLD “To ban guns because criminals use them is to tell the innocent and law-abiding that their rights and liberties depend not on their own conduct, but on the conduct of the guilty and the lawless.” Jeff Snyder

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