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10-30-2015, 01:52 PM
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#1 |
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Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Mufflers/LS 5.3
Megnaflow Dynamax Borlas
Which ones do you like or dislike?
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53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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10-30-2015, 02:26 PM
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#2 |
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Registered User
Join Date: Apr 2014
Location: Birmingham, AL
Posts: 560
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Re: Mufflers/LS 5.3
I am also interested to hear.
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10-30-2015, 03:09 PM
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#3 |
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Registered User
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,589
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Re: Mufflers/LS 5.3
I like my Magnaflow. 18" long body, oval, dual 2.5 in, single 3" out. Great sound, no drone.
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10-30-2015, 05:27 PM
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#4 |
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Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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Re: Mufflers/LS 5.3
I have Hooker street rod 'shorties", & run mandrel bent downs. 2 1/2" pipe/H pipe, & 50's Flows , set as far back as possible. The tail pipes exit straight out back (also 2 1/2 "). The truck has an awesome sound....mellow @ idle , or cruise, but barks pretty hard ,when "danced on"
 With a 3.42 rear gear/.76 OD, on the hyway(at proper speeds), mellow, no drown. Longhorn
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
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10-30-2015, 05:39 PM
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#5 |
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Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,134
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Re: Mufflers/LS 5.3
We used a cheap jegs pair # 300012
http://www.jegs.com/i/JEGS-Performan...00012/10002/-1 It sounds good when you romp it and quite when its at idle with a little rumble |
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10-30-2015, 07:32 PM
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#6 |
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Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: Mufflers/LS 5.3
Borla if you can find them Cheap/Used, Not sure I would pay retail for them, I have one on my 5.3L Camaro. Quiet tone at idle...Gets louder when you step on it.
I had some Magnaflows on my old '70 C10 (400hp 350).....Didn't care for the sound....Too raspy & loud for me. 50 series Flowmasters are good, What I had on my '70 before they rusted out after 8 years or so. If you daily driving it....This probably won't be an issue. Not much experience with Dynomax. |
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10-30-2015, 08:05 PM
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#7 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: Mufflers/LS 5.3
I've got Dmax race bullets on my 6.0, and I enjoy the sound, but its by no means quiet.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING  |
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10-30-2015, 08:23 PM
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#8 |
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Registered User
Join Date: Mar 2009
Location: League City,TX
Posts: 66
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Re: Mufflers/LS 5.3
Borla Xr-1 (round or oval)
Borla pro xs
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1973 K5, full vert, 6" BDS lift, 35 Mickey T MTs 1984 K10, 8" lift on 35s 2004 3/4 4wd, 33s Toyo Mts, Long Tube headers, 3K multidisk 80e, tons of miles 2011 Yukon XL | Bone stock 2013 Audi Q5 |
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10-30-2015, 09:57 PM
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#9 |
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Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: Mufflers/LS 5.3
LS1 with 2.5" pipes x-pipe and Magnaflows.
Idle https://www.youtube.com/watch?v=WqrdIgxwq2Q Some throttle action. https://www.youtube.com/watch?v=74QKz5Ad-HA
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10-30-2015, 10:48 PM
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#10 |
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Registered User
Join Date: Sep 2013
Location: Lancaster, PA
Posts: 32
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Re: Mufflers/LS 5.3
I'm trying Black Widow mufflers on my project. Something different
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72 C10 swb LS 5.3 LSA Blower/4l60 performabuilt 01 Pontiac Trans Am WS6 |
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10-31-2015, 02:51 AM
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#11 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: Mufflers/LS 5.3
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING |
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10-31-2015, 05:07 AM
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#12 |
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Registered User
Join Date: Jun 2014
Location: Piedmont, OK
Posts: 364
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Re: Mufflers/LS 5.3
I have run flowmaster 44's, or flowmaster 40's, or flowmaster 10's, or magnaflow 14" duals. they all have different sounds and different features. it really depends on what you are looking for. best advice is to go to youtube and watch/listen to videos of other guys mufflers and decide for your self.
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1971 K30 burb carbed LS6 th400 np205 d70f 14bff 4whl discs lifted 35 bfg's 1994 k3500 rcsb trophy truck ls427 4l85e bw4401 9.25ifs 14bff g80 35 bfg's 1998 K3500 rclb ls427 4l85e bw4401 9.25ifs 14bff g80 35 bfg's 1999 k3500 crewcab dually 4x4 496ci 4l85e bw4401 9.25ifs 14bff g80 6" lift 37 bfg's |
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10-31-2015, 10:24 AM
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#13 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,601
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Re: Mufflers/LS 5.3
I thought I was buying magnaflows off ebay for mine but when I got them there was no name anywhere on the muffler..they are 2 1/2" stainless.. I went back and looked at the ad and it said magflow..not magnaflow..I tried them anyway and am pleased with the sound behind my 6.0..not overly loud but has a nice rumble to it. I have mine turned down in front of the axle also.
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10-31-2015, 01:42 PM
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#14 |
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Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Re: Mufflers/LS 5.3
Thanks folks, still have not put in a order for two muffs.
Decisions............
__________________
53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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10-31-2015, 07:02 PM
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#15 |
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Registered User
Join Date: Jul 2014
Location: Dayton, TX
Posts: 335
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Re: Mufflers/LS 5.3
I just put the MagnaFlows on mine and do no like the glass pack like sound at all. I'll probably end up swapping them out for FlowMasters.
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'83 Silverado Step Side '85 GMC short bed. '86 Chevy Step Side Custom Deluxe LQ9/4L80 swap (SOLD) |
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11-02-2015, 06:10 PM
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#16 |
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Registered User
Join Date: May 2011
Location: Missoula, MT
Posts: 934
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Re: Mufflers/LS 5.3
I have Mangnaflow's dual 2.75' into a single 4", long oval body muffler on my 03 6.0 and it sounds good in the cab but I heard my wife step on it when she took off in it the other day and I didn't like it, real raspy.
I have 2 dynomax 2.5" super turbos on my 69 that I will use on my 5.3 conversion that were on the 350 I pulled and they were perfect! Flow rates and sound make me wonder why I use anything else. They are real quiet at idle and aggressive when you push the go pedal, all while being able to move allot of air so they don't become a restriction. Most of the Flowmasters I have been around all drone, but that could be to tail pipe length and have little to do with the muffler.
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69 GMC C10 build thread- http://67-72chevytrucks.com/vboard/s...d.php?t=501676 03 Silverado build thread-http://67-72chevytrucks.com/vboard/s...d.php?t=591582 |
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11-02-2015, 07:32 PM
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#17 |
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Registered User
Join Date: Nov 2013
Location: Natchitoches, LA
Posts: 70
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Re: Mufflers/LS 5.3
I know several that swear by MagnaFlow. One of them owns a muffler shop. I have personally ran DynoMax Super Turbos in the past. Now I enjoy OEM quietness after selling my last truck with an 18" glass pack.
CT |
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11-03-2015, 12:23 AM
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#18 |
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Registered User
Join Date: Feb 2004
Location: brownfield texas (west texas)
Posts: 1,936
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Re: Mufflers/LS 5.3
I'm itching to try a pair of 9444 spintech mufflers. From all the sound clips I have heard they make even a small cam sound like nasty popcorn, ahhh I love that sound !
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The Ghost 67 short wide full custom. 550 hp LSX, 4l80E, narrowed 9". Body dropped w/air ride! ........................ ___ .........________//__{\_____ ,,,,,,,/__(⊙)___//___/__(O)_/ @disciple2.rc 💪instagram💪 LED TAILS |
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11-03-2015, 12:27 AM
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#19 |
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Registered User
Join Date: Feb 2004
Location: brownfield texas (west texas)
Posts: 1,936
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Re: Mufflers/LS 5.3
https://youtu.be/IGTsqpk0rEk, don't know the cam size but most all YouTube clips have that crackle.
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The Ghost 67 short wide full custom. 550 hp LSX, 4l80E, narrowed 9". Body dropped w/air ride! ........................ ___ .........________//__{\_____ ,,,,,,,/__(⊙)___//___/__(O)_/ @disciple2.rc 💪instagram💪 LED TAILS |
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