Your opinion on mufflers for 86 350? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*1LOW4X4* · 12-05-2010, 03:36 AM

Hey guys, my 86 has a pretty strong engine with an agressive cam and all that, but after the 3" collectors on the headers, it steps down to like 1 3/4" pipe and then goes thru some glasspack type mufflers, then dumps before the axle.

I like the dump part, but I'm going dual 2 1/2" pipe and wanted to know what mufflers would sound good but not break the bank. 40 series flowmaster?

I dont know. I need 2 1/2" single in and out mufflers of some sort, and wanted your opinion. Thanks!

heres a vid of it running now.

79'84'chevy · 12-05-2010, 04:50 AM

super 40 flowmasters sound nice. so do the 44's

flamingbig10 · 12-05-2010, 11:57 AM

flow master super 10s
http://www.summitracing.com/parts/FLO-842518/

baclay9 · 12-05-2010, 12:14 PM

Spintech's sound great and have a much better reputation for flow than flowmasters do. The sportsman series are comparible in sound to 40 series flows but don't have the "tinny" sound associated with flowmasters.

Everyone is going to have an opinion on this though so you will just have to pick one and go for it. My friend has a very hot 350 in his truck and is running 40 series flows and it sounds really mean! I just don't like the "tinny" sound when he gooses it.

I went back and forth on this as I am building a motor for my truck right now and will be doing exhaust soon. On the one hand I knew how good my buddies truck sounded but also knew I wasn't crazy about the WOT sound. One the other hand I found these fairly new Spintech mufflers that everyone that has tried them seems to be raving about them. I have never actually heard them in person just on Youtube. They sound incredible though and have awesome reviews. I decided to take a chance on them. I personally went with The Prostreet 6000 series Spintech which I am guessing is comparable in volume to a 1 chamber flowmaster. The Prostreets are very small mufflers only measureing 4"x6"x12". As I said earlier the Sportsman series may be more up your alley. Good luck man!

Dalaigh · 12-05-2010, 01:15 PM

I would stay way from Flowmaster, because you want to dump. Dumping the exhaust cause a bit of droning from any exhaust system, and flowmaster drone bad enough to start, it'll drive you nuts. I have Thursh welded mufflers, they are the same design idea as the Flowmaster super 40's and sound similar, but they don't drone or have that tinny sound.

THE "10" SILVERADO · 12-05-2010, 01:34 PM

Quote:

Originally Posted by 79'84'chevy

super 40 flowmasters sound nice. so do the 44's

Never heard the 44's before....any difference in sound?

Malo83 · 12-05-2010, 02:37 PM

Quote:

Originally Posted by Dalaigh

I would stay way from Flowmaster, because you want to dump. Dumping the exhaust cause a bit of droning from any exhaust system, and flowmaster drone bad enough to start, it'll drive you nuts. I have Thursh welded mufflers, they are the same design idea as the Flowmaster super 40's and sound similar, but they don't drone or have that tinny sound.

I'm running a single 3" exhaust and cat into a Flow 40 muffler with the 3" inlet and dual 2.5 outlets dumped in front of the axle and love it,deep agressive sound

3r!c84 · 12-05-2010, 06:25 PM

heres my truck. hot 400sbc with flowmaster 40s

YouTube - 84 c10 400sbc

my pop corn maker

*1LOW4X4* · 12-05-2010, 08:22 PM

Nice, couldn't tell if they were dumped? Also what's the specs on your cam, and your exhaust? Headers etc?
Posted via Mobile Device

gchemist · 12-05-2010, 09:25 PM

For actual better exhaust flow, Magnaflow!!

lilpoindexter · 12-05-2010, 09:36 PM

Flowmasters, with a cross over pipe, if you don't already have one. Flowmaster is the king of all mufflers.

*1LOW4X4* · 12-05-2010, 09:42 PM

Quote:

Originally Posted by gchemist

For actual better exhaust flow, Magnaflow!!

LOL I actually have a massive Stainless dual 3" in and Dual 3" out under my '01....I like it.

dexter: would adding a crossover pipe help me?

baclay9 · 12-05-2010, 10:36 PM

Quote:

Originally Posted by 3r!c84

heres my truck. hot 400sbc with flowmaster 40s
YouTube - 84 c10 400sbc
my pop corn maker

Love your idle man!!! I hope mines lope sounds that good.
Posted via Mobile Device

gchemist · 12-05-2010, 10:42 PM

I'll put up my setup against a Flowmaster setup any day. For power with an identical engine, I'll blow it away.

3r!c84 · 12-05-2010, 10:43 PM

Quote:

Originally Posted by 1LOW4X4

Nice, couldn't tell if they were dumped? Also what's the specs on your cam, and your exhaust? Headers etc?
Posted via Mobile Device

400sbc worked up some.. with
long tube headers into 2.5 pipe dumped before the rear end. no x or h pipe.
.503/.510 lift Elgin cam

bucannon · 12-06-2010, 05:08 AM

Flowmaster super 44's

k10shortbox · 12-09-2010, 12:51 AM

I vote spintechs as well, I put them on mine and they sound very throaty without the drone and they are dumped

INSIDIOUS '86 · 12-09-2010, 01:11 AM

I have a bid of my truck with a lopey idle and a 3 in system with x pipe and purple hornie dumps ile post the vid. I'm on an iPhone so getting a phone vid to here will take time
Posted via Mobile Device

INSIDIOUS '86 · 12-09-2010, 01:55 AM

you have no idea how long it took to get this from my phone to here lol.
hope you guys like it my truck is just at the threshold of overloading the microphone on my phone so sound isnt as good as it really is

http://s270.photobucket.com/albums/j...t=IMG_0057.mp4

THE "10" SILVERADO · 12-09-2010, 09:39 AM

Quote:

Originally Posted by INSIDIOUS '86

you have no idea how long it took to get this from my phone to here lol.
hope you guys like it my truck is just at the threshold of overloading the microphone on my phone so sound isnt as good as it really is

http://s270.photobucket.com/albums/j...t=IMG_0057.mp4

I've never seen the tach on that part of the instrument cluster before......good idea!

jkade · 12-09-2010, 10:11 AM

If you want a good cheap muffler get a Full Boar... they are pretty much the same as a flow master. I have a set on my 86 K10 and I love them and I am going to put a set on my M1009 with the 6.0 and it should be making well over 400hp.

INSIDIOUS '86 · 12-09-2010, 12:18 PM

Quote:

Originally Posted by THE "10" SILVERADO

I've never seen the tach on that part of the instrument cluster before......good idea!

Thanks it's a harbor frieght tach that cost 12 bucks and has like 8 colors. Took alot to get it in there though.

Has anybody on the forum have a video of there spintechs?
Posted via Mobile Device

WigglesTheHoly · 12-09-2010, 01:23 PM

man it never fails I stop by the site and I end up reading a post and deciding to drop money on the same thing lol.

manimal · 12-09-2010, 02:05 PM

Magnaflow or DynoMax. They are a straight through muffler and will make more power than a Flowmaster OR spintech. Plus they sound GREAT.

3r!c84 · 12-09-2010, 02:19 PM

Quote:

Originally Posted by manimal

Magnaflow or DynoMax. They are a straight through muffler and will make more power than a Flowmaster OR spintech. Plus they sound GREAT.

I'm thinking about changing over to magnaflow mufflers from my flowmasters
Posted via Mobile Device

12-05-2010, 03:36 AM	#1
1LOW4X4 Account Suspended Join Date: Jul 2010 Location: Southeast Texas Posts: 189	Your opinion on mufflers for 86 350? Hey guys, my 86 has a pretty strong engine with an agressive cam and all that, but after the 3" collectors on the headers, it steps down to like 1 3/4" pipe and then goes thru some glasspack type mufflers, then dumps before the axle. I like the dump part, but I'm going dual 2 1/2" pipe and wanted to know what mufflers would sound good but not break the bank. 40 series flowmaster? I dont know. I need 2 1/2" single in and out mufflers of some sort, and wanted your opinion. Thanks! heres a vid of it running now.

12-05-2010, 04:50 AM	#2
79'84'chevy Registered User Join Date: Sep 2010 Location: Cody, Wyoming Posts: 76	Re: Your opinion on mufflers for 86 350? super 40 flowmasters sound nice. so do the 44's __________________ deer hunting, fish catching, 4x4ing country boy

12-05-2010, 11:57 AM	#3
flamingbig10 6.0 powered square Join Date: Feb 2008 Location: Mesquite texas Posts: 3,459	Re: Your opinion on mufflers for 86 350? flow master super 10s http://www.summitracing.com/parts/FLO-842518/ __________________ Aaron 1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326

12-05-2010, 12:14 PM	#4
baclay9 Registered User Join Date: Apr 2010 Location: Newcastle, OK Posts: 1,344	Re: Your opinion on mufflers for 86 350? Spintech's sound great and have a much better reputation for flow than flowmasters do. The sportsman series are comparible in sound to 40 series flows but don't have the "tinny" sound associated with flowmasters. Everyone is going to have an opinion on this though so you will just have to pick one and go for it. My friend has a very hot 350 in his truck and is running 40 series flows and it sounds really mean! I just don't like the "tinny" sound when he gooses it. I went back and forth on this as I am building a motor for my truck right now and will be doing exhaust soon. On the one hand I knew how good my buddies truck sounded but also knew I wasn't crazy about the WOT sound. One the other hand I found these fairly new Spintech mufflers that everyone that has tried them seems to be raving about them. I have never actually heard them in person just on Youtube. They sound incredible though and have awesome reviews. I decided to take a chance on them. I personally went with The Prostreet 6000 series Spintech which I am guessing is comparable in volume to a 1 chamber flowmaster. The Prostreets are very small mufflers only measureing 4"x6"x12". As I said earlier the Sportsman series may be more up your alley. Good luck man!

12-05-2010, 01:15 PM	#5
Dalaigh Canadian Trucker Join Date: Nov 2010 Location: Sarnia, ont canada Posts: 648	Re: Your opinion on mufflers for 86 350? I would stay way from Flowmaster, because you want to dump. Dumping the exhaust cause a bit of droning from any exhaust system, and flowmaster drone bad enough to start, it'll drive you nuts. I have Thursh welded mufflers, they are the same design idea as the Flowmaster super 40's and sound similar, but they don't drone or have that tinny sound.

12-05-2010, 08:22 PM	#9
1LOW4X4 Account Suspended Join Date: Jul 2010 Location: Southeast Texas Posts: 189	Re: Your opinion on mufflers for 86 350? Nice, couldn't tell if they were dumped? Also what's the specs on your cam, and your exhaust? Headers etc? Posted via Mobile Device

12-05-2010, 09:25 PM	#10
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Your opinion on mufflers for 86 350? For actual better exhaust flow, Magnaflow!! __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

12-05-2010, 09:36 PM	#11
lilpoindexter Registered User Join Date: Sep 2010 Location: los angeles Posts: 1,134	Re: Your opinion on mufflers for 86 350? Flowmasters, with a cross over pipe, if you don't already have one. Flowmaster is the king of all mufflers.

12-05-2010, 10:42 PM	#14
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Your opinion on mufflers for 86 350? I'll put up my setup against a Flowmaster setup any day. For power with an identical engine, I'll blow it away. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

12-06-2010, 05:08 AM	#16
bucannon Salty Sailor Join Date: May 2009 Location: Savannah, Ga Posts: 603	Re: Your opinion on mufflers for 86 350? Flowmaster super 44's __________________ 86 c-10 Custom Deluxe Savannah, Georgia

12-09-2010, 12:51 AM	#17
k10shortbox Registered User Join Date: Mar 2009 Location: Sioux Falls, SD Posts: 44	Re: Your opinion on mufflers for 86 350? I vote spintechs as well, I put them on mine and they sound very throaty without the drone and they are dumped

12-09-2010, 01:11 AM	#18
INSIDIOUS '86 Registered User Join Date: Jul 2009 Location: washington Posts: 4,178	Re: Your opinion on mufflers for 86 350? I have a bid of my truck with a lopey idle and a 3 in system with x pipe and purple hornie dumps ile post the vid. I'm on an iPhone so getting a phone vid to here will take time Posted via Mobile Device Last edited by INSIDIOUS '86; 12-09-2010 at 01:22 AM.

12-09-2010, 01:55 AM	#19
INSIDIOUS '86 Registered User Join Date: Jul 2009 Location: washington Posts: 4,178	Re: Your opinion on mufflers for 86 350? you have no idea how long it took to get this from my phone to here lol. hope you guys like it my truck is just at the threshold of overloading the microphone on my phone so sound isnt as good as it really is http://s270.photobucket.com/albums/j...t=IMG_0057.mp4 Last edited by INSIDIOUS '86; 12-09-2010 at 02:00 AM. Reason: ran out of fuel

12-09-2010, 10:11 AM	#21
jkade Senior Member Join Date: Nov 2005 Location: AL Posts: 2,517	Re: Your opinion on mufflers for 86 350? If you want a good cheap muffler get a Full Boar... they are pretty much the same as a flow master. I have a set on my 86 K10 and I love them and I am going to put a set on my M1009 with the 6.0 and it should be making well over 400hp.

12-09-2010, 01:23 PM	#23
WigglesTheHoly IT Guy/ Father/ Chevy lover Join Date: Feb 2010 Location: Hoisington, KS Posts: 568	Re: Your opinion on mufflers for 86 350? man it never fails I stop by the site and I end up reading a post and deciding to drop money on the same thing lol. __________________ 78 Chevy (Pictures) SOLD 79 Chevy LWB (pasture) 83 Chevy LWB (crushed rusted beyond repair) 02 TrailBlazer SOLD 03 VW Passat wagonSOLD 95 extended cab silveradoSOLD (still in family) 05 Crew Cab Silverado 5.3 (The Turd) WTB: 66 El camino Technology Specialist aspiring to be a gear head.



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12-09-2010, 02:05 PM	#24
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: Your opinion on mufflers for 86 350? Magnaflow or DynoMax. They are a straight through muffler and will make more power than a Flowmaster OR spintech. Plus they sound GREAT. __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT

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