Exhaust Poll - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70GMCer · 09-28-2007, 03:58 PM

Yes, another poll. This time I can't make up my mind on which exhaust system to use. They all have their pros and cons. Either I want the Magnaflow 2.5" stainless system for $500.00 or have another made using 2.5" pipe with Flowmasters for around the same price. Or, what other system is out there? What do you think???

*ksjh1316* · 09-28-2007, 04:05 PM

Sorry not much help the orginal muffler and piping is still on my truck can't believe its in decent shape still after 36 years maybe the 74k helped out some. Looking forward to the results though I will have to change mine when I do the 350 swap.

Scott68-93-97 · 09-28-2007, 04:14 PM

I like the magnaflow sound over the flows myself, I have a magnaflow on my diesel and flows on the 68 and 97, but the flows are coming off, Im actually going to run the hooker aerochamber its a similar design to edelbrocks muffler at a fraction of the cost

68Stepbed · 09-28-2007, 05:21 PM

The big question is what do you like better? I personally think the Magnaflow sytem with the x-pipe setup sounds too high pitched and raspy. I klnow a guy with a custom bent 2.25" system with Magnaflow mufflers and no x-pipe and it sounds really nice.

I had a custom built 2.5" system built at a local shop with Flowmaster Super 40's for right at $400.00. It was a bit pricey, but the Super 40's are a little higher than others. I was actually gonna have Magnaflow mufflers installed after hearing the truck stated above because they're not as expensive, but he only had one muffler. I love the way it sounds! The Super 40's have a deep rumble and aren't as loud as original 40 series. You can tell I have a small block in my truck, but you have to really listen to make sure it's not a big block IMO.

The Magnaflow system is nice with stainless pipe and mandrel bends, but even after you pay to get it, you still have to pay someone to install it. That is, unless you're pretty savvy with a cutter and welding. The system is made for LWB trucks so it can be fit down for SWB trucks, so it still has to be cut and fitted first. It's also made for headers, so if you're using manifolds, you'll still have to have pipes made to connect them.

My vote is for a custom built system with whatever kind of mufflers YOU like.

**jerry moss** · 09-28-2007, 05:47 PM

i've worked in the same muffler shop for over 22 years and i usually judge which muffler to use by the persons age. mid 30s on up i try to sell magnaflows--they're more mellow at cruising speed.late teens up to early 30s usually get flows-- they have a resonance noise at cruising speed that can be annoying to some people.

ctouchet · 09-28-2007, 05:51 PM

I will say Flow Masters 40Series I took the afternoon off of work and finished my exhaust. New Heddman Elite Hedders with Dual 2 1/2" Flowmasters with turndowns in front of rearend.

lofly'a · 09-28-2007, 06:27 PM

i guess i'm old now........turn downs with flows in "front" of the rearend (deafening). looking for mellow with a good rap when i hammer it, (out da' back).

70c10 · 09-28-2007, 07:41 PM

Steve- Flowmaster has a U-Fit kit that has been pretty popular considering it's all mandrel bends and over the axle pieces and any configuration you could think of! If you are coming out in front of the wheels it's not worth buying because you will not use much of the kit. http://www.jegs.com/webapp/wcs/store...1_10263:metal:

http://www.classictrucks.com/tech/07...kit/index.html

Spray-Bomb · 09-29-2007, 12:05 AM

You don't want my vote !!!

I have prolly the loudest daily driven truck on the board !!!

mark's68 · 09-29-2007, 01:25 AM

I'm running headman long tube 1 3/4'' primary into 2 1/2'' flowmaster 50 series delta flow angled out in front of the rear tires with 2 1/2'' pipes. This is behind a STOUT 388. It sounds great.

chvtrkman · 09-29-2007, 01:30 AM

I think everyone has a certain "special" sound they want to achieve when installing an exhaust system. In my younger days I really liked the exhaust note I got on my 68 Chevelle w/396 running Thrush turbos thru 2.25 in. pipes.

On my truck I went the "cheap alternative" route, and ran 2.5 in. pipes with Summit Racing welded mufflers that turn out just forward of the rear wheel.
I have to admit, they sound nice at idle, but are a bit louder than I wanted when I stomp on it.(2500+ rpm)

**kwmech** · 09-29-2007, 02:47 AM

I've got a 3'' single exhaust series 40 on my suburban that I like the sound of and recently I had a magnaflow put on my 69 GMC which is also a 3'' single. Magnaflow is a lot quieter. Performance, from what I could tell is about the same. Different trucks though. Both small blocks

Frizzle Fry · 09-29-2007, 04:51 PM

Quote:

Originally Posted by Spray-Bomb

You don't want my vote !!!

I have prolly the loudest daily driven truck on the board !!!

I'll take that challenge. I have long tube headers 2.5" into Flow 40s and out the side before the rear (no crossover). Oh and that's fed by a 476; daily driven

Unless you run open headers...

My vote is for magnaflow because I'm sick of the flows resonance. But the flows do sound wicked at idle and WOT.

Spray-Bomb · 09-29-2007, 05:10 PM

Quote:

Originally Posted by Frizzle Fry

I'll take that challenge. I have long tube headers 2.5" into Flow 40s and out the side before the rear (no crossover). Oh and that's fed by a 476; daily driven

Unless you run open headers...

My vote is for magnaflow because I'm sick of the flows resonance. But the flows do sound wicked at idle and WOT.

Ok SBC

Mine has true dual 3" with Cherry Bomb extreme (single chamber) mufflers dumping out about a foot behind the cab under the bed

If I had more compression I could beat you up with loud

can you set off car alarms ??? I can

Frizzle Fry · 09-29-2007, 05:16 PM

Quote:

Originally Posted by Spray-Bomb

Ok SBC

can you set off car alarms ??? I can

Just rolling by near idle or parking I set them off sometimes

I'm switching to 3" with x-over and some quieter mufflers (maybe magnaflow)soon. So you'll have me beat then for sure.

EAST SIDE LOW LIFE · 09-30-2007, 12:51 PM

I'm running a set of Sanderson 3/4 length headers, 2.5' pipes right out to the back with 4' s/s tips. Oh yea just about for got running Flows.

I ran until a few days ago Headman full length headers and that resonence at 50 mph was clearly notciable. With the 3/4 length Sandersons the exhaust sounds richer, a lot fuller not so much of a low drone.

esll.

scatesracing · 09-30-2007, 01:54 PM

Thats one of the first things i do when i get a different ride.... Is put flow masters on them...

yenko427 · 10-05-2007, 11:03 PM

I have flowmasters on my 1993 gmc and love them. But on my 71 chevy 1/2 I have Full boar exhaust with a h pipe. Anybody else using Full Boar.

scatesracing · 10-04-2007, 06:52 PM

Quote:

Originally Posted by Spray-Bomb

Ok SBC

Mine has true dual 3" with Cherry Bomb extreme (single chamber) mufflers dumping out about a foot behind the cab under the bed

If I had more compression I could beat you up with loud

can you set off car alarms ??? I can

Oh yea well can you knock pictures off the walls in the house and get you wife to come out screaming at ya ????? LOL

Mondo · 10-04-2007, 11:19 PM

I prefer a single 3 inch system... a 3 inch flows the same as 2 - 2.5s (hydraulics is strange that way)

70GMCer · 09-29-2007, 07:23 AM

A lot of good info.....I've heard that Magnaflow system sounds like a Ferrari. Can anyone comment on that? I guess that's what might be holding me back from getting that system. I like the idea of a complete stainless setup, and at a good price as Magnaflow.

**Boog** · 09-29-2007, 08:06 AM

I have forgotten the link but there are a couple of sites out there with sound clips of popular vehicles with different brands of mufflers to compare. Maybe exhaust soundclips.com or something like that. Probably search Magnaflow or Flowmaster and get the link.

grayw0lf · 09-29-2007, 08:19 AM

Please... no more Flowmasters.

Every truck, SUV, car, 4-wheeler, & quarter horse has a Flowmaster.

Stop the madness & go with something that sounds like a classic truck. Go w/ glasspacks..

see ten · 09-29-2007, 09:38 AM

Flowmasters are like Torque Thrust II rims.....There's a reason everone runs em..........They're nice! Here's a sound/vid clip of my K10 shot at Craig's by Putter.

http://s16.photobucket.com/albums/b4...t=MOV00542.flv

68Stepbed · 09-29-2007, 03:04 PM

I finally posted this last night. I don't have any vids from the outside yet. Here's one of a ride along in my 68. Remember, I have no interior or insulation yet in this video, so it won't be as loud inside the cab after interior is done.

http://videos.streetfire.net:80/vide...b701737824.htm

View Poll Results: Which exhaust to use
Magaflow Stainless	18	24.66%
Flowmaster	40	54.79%
Other	15	20.55%
Voters: 73. You may not vote on this poll

09-28-2007, 03:58 PM	#1
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Exhaust Poll Yes, another poll. This time I can't make up my mind on which exhaust system to use. They all have their pros and cons. Either I want the Magnaflow 2.5" stainless system for $500.00 or have another made using 2.5" pipe with Flowmasters for around the same price. Or, what other system is out there? What do you think??? __________________ 1997 GMC Sierra Ext 1965 Mustang Last edited by 70GMCer; 09-28-2007 at 04:00 PM.

09-28-2007, 04:05 PM	#2
ksjh1316 Account Suspended Join Date: Jul 2007 Location: Wichita KS Posts: 1,599	Re: Exhaust Poll Sorry not much help the orginal muffler and piping is still on my truck can't believe its in decent shape still after 36 years maybe the 74k helped out some. Looking forward to the results though I will have to change mine when I do the 350 swap.

09-28-2007, 04:14 PM	#3
Scott68-93-97 Registered User Join Date: Jul 2006 Location: Fair Oaks, CA Posts: 475	Re: Exhaust Poll I like the magnaflow sound over the flows myself, I have a magnaflow on my diesel and flows on the 68 and 97, but the flows are coming off, Im actually going to run the hooker aerochamber its a similar design to edelbrocks muffler at a fraction of the cost __________________ 1968 Short Fleet 350/700r4 http://67-72chevytrucks.com/vboard/s...d.php?t=249435 1997 Bagged XtdCab Vortec350/4L60e http://67-72chevytrucks.com/vboard/s...44#post2286144 1993 XtdCab Longbed 4x4 6.5Turbo/NV4500 "Daily Driver" 1985 Toyota XtdCab 4x4 22re/W-56/Dual T-cases, Doug Thorley Header, Homebrew front and rear spring packs, Tons of Mods to suspension and drivetrain, 35" boggers, coming soon ARB's and 5.29's, Possible 4.3/700r4 swap

09-28-2007, 05:21 PM	#4
68Stepbed Registered User Join Date: Mar 2005 Location: 10-Uh-See Posts: 5,609	Re: Exhaust Poll The big question is what do you like better? I personally think the Magnaflow sytem with the x-pipe setup sounds too high pitched and raspy. I klnow a guy with a custom bent 2.25" system with Magnaflow mufflers and no x-pipe and it sounds really nice. I had a custom built 2.5" system built at a local shop with Flowmaster Super 40's for right at $400.00. It was a bit pricey, but the Super 40's are a little higher than others. I was actually gonna have Magnaflow mufflers installed after hearing the truck stated above because they're not as expensive, but he only had one muffler. I love the way it sounds! The Super 40's have a deep rumble and aren't as loud as original 40 series. You can tell I have a small block in my truck, but you have to really listen to make sure it's not a big block IMO. The Magnaflow system is nice with stainless pipe and mandrel bends, but even after you pay to get it, you still have to pay someone to install it. That is, unless you're pretty savvy with a cutter and welding. The system is made for LWB trucks so it can be fit down for SWB trucks, so it still has to be cut and fitted first. It's also made for headers, so if you're using manifolds, you'll still have to have pipes made to connect them. My vote is for a custom built system with whatever kind of mufflers YOU like. __________________ Matt 68 C10 stepside, LS1/700R4, TCI Engineering suspension system

09-28-2007, 05:47 PM	#5
jerry moss Born Psycho Join Date: Feb 2001 Location: brentwood,cal,usa Posts: 4,915	Re: Exhaust Poll i've worked in the same muffler shop for over 22 years and i usually judge which muffler to use by the persons age. mid 30s on up i try to sell magnaflows--they're more mellow at cruising speed.late teens up to early 30s usually get flows-- they have a resonance noise at cruising speed that can be annoying to some people. __________________ jerry moss 72 cheyenne super K20- tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,tow hooks,bumper guards,toolbox,aux. fuel tank,posi front and rear,plus other goodies!!! SOLD 69 suburban K20-tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,4 inch all spring lift,4 speed, 14 bolt full floater, dana 44 HD,warn winch,posi front and rear,tow hooks,plus other goodies. 73/80 chevy/gmc K20 SB400,turbo 400,205,tilt,a-c,gas hog. 77 K/5 cheyenne blazer-daily driver/beater. SON HAS IT NOW BRENTWOOD,CALIFORNIA

09-28-2007, 05:51 PM	#6
ctouchet Registered User Join Date: Nov 2005 Location: Maurice,Louisiana Posts: 169	Re: Exhaust Poll I will say Flow Masters 40Series I took the afternoon off of work and finished my exhaust. New Heddman Elite Hedders with Dual 2 1/2" Flowmasters with turndowns in front of rearend. __________________ 2012 F150 SuperCrew 2011 GMC 1500 (COMPANY TRUCK) 1982 Chevy Blazer 2WD (Work in Progress)

09-28-2007, 06:27 PM	#7
lofly'a Registered User Join Date: May 2000 Location: Alexandria, LA 71301 Posts: 1,451	Re: Exhaust Poll i guess i'm old now........turn downs with flows in "front" of the rearend (deafening). looking for mellow with a good rap when i hammer it, (out da' back). __________________ -02 avalanche (daily driver) -66 gto ragtop 389/400 (garage queen, hand-me-down from dad) -72 Tribute Trans Am (6.0LS/T56 6-speed) in progress -2003 YUKON (Wife's) -71 gmc swb fleet (current project, gonna shave everything, bags, stuff w/ 20's, gen III powertrain) -48 3100 SWB - 12/31/23 LONG TERM Project

09-28-2007, 07:41 PM	#8
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,857	Re: Exhaust Poll Steve- Flowmaster has a U-Fit kit that has been pretty popular considering it's all mandrel bends and over the axle pieces and any configuration you could think of! If you are coming out in front of the wheels it's not worth buying because you will not use much of the kit. http://www.jegs.com/webapp/wcs/store...1_10263:metal: http://www.classictrucks.com/tech/07...kit/index.html __________________ Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads

09-29-2007, 12:05 AM	#9
Spray-Bomb Texas Big Wig Join Date: Jan 2007 Location: Mineola, Texas Posts: 5,620	Re: Exhaust Poll You don't want my vote !!! I have prolly the loudest daily driven truck on the board !!! __________________ Just not low enough... ----------------------------- Sinister Killer

09-29-2007, 01:25 AM	#10
mark's68 Registered User Join Date: Aug 2007 Location: greenville,ms. Posts: 47	Re: Exhaust Poll I'm running headman long tube 1 3/4'' primary into 2 1/2'' flowmaster 50 series delta flow angled out in front of the rear tires with 2 1/2'' pipes. This is behind a STOUT 388. It sounds great.

09-29-2007, 01:30 AM	#11
chvtrkman Registered User Join Date: Sep 2007 Location: PA. Posts: 178	Re: Exhaust Poll I think everyone has a certain "special" sound they want to achieve when installing an exhaust system. In my younger days I really liked the exhaust note I got on my 68 Chevelle w/396 running Thrush turbos thru 2.25 in. pipes. On my truck I went the "cheap alternative" route, and ran 2.5 in. pipes with Summit Racing welded mufflers that turn out just forward of the rear wheel. I have to admit, they sound nice at idle, but are a bit louder than I wanted when I stomp on it.(2500+ rpm) __________________ _____________________________________________ 69 C-20 292, 4 spd O/D, 4:56 rears. No a/c p/s p/b p/w......restoration project,"Operation:Stovebolt" 78 C-10 305 TH350 new (old) daily driver 02 Suburban Z71 a.k.a. the family truckster 99 Silverado 1500 Z71

09-29-2007, 02:47 AM	#12
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,599	Re: Exhaust Poll I've got a 3'' single exhaust series 40 on my suburban that I like the sound of and recently I had a magnaflow put on my 69 GMC which is also a 3'' single. Magnaflow is a lot quieter. Performance, from what I could tell is about the same. Different trucks though. Both small blocks

09-30-2007, 12:51 PM	#16
EAST SIDE LOW LIFE Senior Member Join Date: Mar 2007 Location: VANCOUVER ISLAND, B.C., Canada Posts: 1,602	Re: Exhaust Poll I'm running a set of Sanderson 3/4 length headers, 2.5' pipes right out to the back with 4' s/s tips. Oh yea just about for got running Flows. I ran until a few days ago Headman full length headers and that resonence at 50 mph was clearly notciable. With the 3/4 length Sandersons the exhaust sounds richer, a lot fuller not so much of a low drone. esll. __________________ Tomorrow is for doing today's stuff. ************************************* This truck has just the right amount of energy for me! Author: Warren Lake .... (member)

09-30-2007, 01:54 PM	#17
scatesracing Machinist Join Date: Sep 2007 Location: Derby Kansas Posts: 296	Re: Exhaust Poll Thats one of the first things i do when i get a different ride.... Is put flow masters on them...



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10-05-2007, 11:03 PM	#18
yenko427 Registered User Join Date: Jun 2007 Location: Sweeny,Texas Posts: 96	Re: Exhaust Poll I have flowmasters on my 1993 gmc and love them. But on my 71 chevy 1/2 I have Full boar exhaust with a h pipe. Anybody else using Full Boar.

10-04-2007, 11:19 PM	#20
Mondo Registered User Join Date: Aug 2007 Location: Bakersfield, Ca Posts: 538	Re: Exhaust Poll I prefer a single 3 inch system... a 3 inch flows the same as 2 - 2.5s (hydraulics is strange that way)

09-29-2007, 07:23 AM	#21
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Re: Exhaust Poll A lot of good info.....I've heard that Magnaflow system sounds like a Ferrari. Can anyone comment on that? I guess that's what might be holding me back from getting that system. I like the idea of a complete stainless setup, and at a good price as Magnaflow. __________________ 1997 GMC Sierra Ext 1965 Mustang

09-29-2007, 08:06 AM	#22
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,453	Re: Exhaust Poll I have forgotten the link but there are a couple of sites out there with sound clips of popular vehicles with different brands of mufflers to compare. Maybe exhaust soundclips.com or something like that. Probably search Magnaflow or Flowmaster and get the link. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

09-29-2007, 08:19 AM	#23
grayw0lf Registered User Join Date: Apr 2004 Location: Clanton, AL Posts: 1,253	Re: Exhaust Poll Please... no more Flowmasters. Every truck, SUV, car, 4-wheeler, & quarter horse has a Flowmaster. Stop the madness & go with something that sounds like a classic truck. Go w/ glasspacks.. __________________ 85' CUCV M1009!!! The newest addition! 6.2diesel, Th400, NP208, & only 36k miles! 70' C-10 LWB Fleetside - Looking good these days! 05' Dodge Neon 88' Winner Escape Sport 1750 - 4.3v6 94' Seadoo SP 84' Honda TRX200, bare nekkid. Just a frame & tires. Always looking for another project or any good deal!

09-29-2007, 09:38 AM	#24
see ten WTB this ad Join Date: Sep 2004 Location: Lafayette Georgia Posts: 5,074	Re: Exhaust Poll Flowmasters are like Torque Thrust II rims.....There's a reason everone runs em..........They're nice! Here's a sound/vid clip of my K10 shot at Craig's by Putter. http://s16.photobucket.com/albums/b4...t=MOV00542.flv

09-29-2007, 03:04 PM	#25
68Stepbed Registered User Join Date: Mar 2005 Location: 10-Uh-See Posts: 5,609	Re: Exhaust Poll I finally posted this last night. I don't have any vids from the outside yet. Here's one of a ride along in my 68. Remember, I have no interior or insulation yet in this video, so it won't be as loud inside the cab after interior is done. http://videos.streetfire.net:80/vide...b701737824.htm __________________ Matt 68 C10 stepside, LS1/700R4, TCI Engineering suspension system

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