Quiet muffler with good flow
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Senior User
Joined: Apr 2015
Posts: 406
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From: Macon,GA
Quiet muffler with good flow
Hey so i just finished my crate motor and trans in the blue beast. I have 2.5 in true duals and hooker headers but I am looking for quieter mufflers that wont restrict too much. I dont want to wake the dead in suburbia every time i start the truck. I had thrush welded that were way too loud. Can some one suggest something that they have used that will have a growl when I get on it but not drone like crazy?
Postmaster
Joined: Nov 2011
Posts: 2,553
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For (reasonably) quiet cruise and some bellow at WOT I like turbo style mufflers. Bigger generally means less restriction/less noise. A parts store or Summit generic smaller turbo is "better". The biggest Dynomax brand Turbo you can fit is "best" for low restriction and low(er) noise IMO.
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Laughing Gas
Joined: Jan 2016
Posts: 828
Likes: 66
From: Hartford, WI
I just had dual 2.5" exhaust put on my truck with an x pipe and dual oval Magna flow mufflers. Awesome! Unless I'm standing on it the exhaust isn't loud and has a nice tone.
The engine is a mostly stock '77 460 I pulled from a F350 camper special and put it in my '77 F150 4x4.
Later, Shortbox4x4
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Laughing Gas
Joined: Nov 2013
Posts: 1,207
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From: S.E. Louisiana;so far USA
Dynomax claims that their VT mufflers are drone free and have a built in "cutout" that only opens under heavy acceleration.
New Universal Drone-Free DynoMax® VT® Muffler Added / DynoMax® Press Releases
I have no personal experience, and can imagine that after some years the cutout may not work perfectly, but it's a nice concept anyway.
New Universal Drone-Free DynoMax® VT® Muffler Added / DynoMax® Press Releases
I have no personal experience, and can imagine that after some years the cutout may not work perfectly, but it's a nice concept anyway.
Fleet Mechanic
Joined: Sep 2014
Posts: 1,628
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From: NE Texas
Getting set to put on a 2.5 I/O Walker Quiet-Flow...EFI manifolds and 45166 Y-pipe, plan on doing 2.5" all the way to the rear. Used to be a truism that the more tailpipe you had after the muffler, the quieter it was, so I am mounting the muffler to the Y-pipe and pipe from there back. If you really want it to be even quieter, a resonator at the rear would also help. I'm odd, I guess - I want the truck to breathe better but I don't want any more noise than necessary. If it was as quiet as a Prius and turned 10 second quarters I'd be thrilled.
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Senior User
Joined: Apr 2015
Posts: 406
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From: Macon,GA
Thanks guys, I think I am going to go with a 3 chamber magnaflow xl exhaust. Having long tube headers and 2.5 true duals means I have alot of growl to silence. My 62 year old mother thought I didn't even have mufflers it was so loud. Haha
Posting Guru
Joined: Sep 2004
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My vote would be dynomax super turbo as well. Flow potential is at the top, nice deep tone at idle and if you get on it, but normal driving/ cruise nearly stock quiet. Most people complain they are too quiet.
Like yourself I tried the thrush welded, drone was insane.
Like yourself I tried the thrush welded, drone was insane.
Thread Starter
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Senior User
Joined: Apr 2015
Posts: 406
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From: Macon,GA
Still on the fence about an exhaust choice. I would like to run an x or H pipe but my drive shaft is smack dab in the middle of my two exhaust pipes. Does any one know if one would quiet down an exhaust?