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#1 |
Registered User
![]() Join Date: Mar 2007
Location: Marbury, Alabama
Posts: 195
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Flowmasters getting on my nerves...
Okay I am running a 427 with flowtech headers with 40 series flowmasters dumped under the bed of my truck. And it was okay when I wasn't driving the truck that much but as i spend more time driving the truck, it is way too loud for my taste (Getting old I guess
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#2 |
Quit if it's not FUN!!!
Join Date: Jul 2010
Location: Indian Trail, N.C,
Posts: 864
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Re: Flowmasters getting on my nerves...
I switched my BBC/'62 Bel-AIR from 40 Flowmasters to Magnaflow Super Turbos. Much more liveable inside and still sounded healthy.
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#3 |
Registered User
![]() Join Date: Jun 2006
Location: Tucson, Az
Posts: 705
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Re: Flowmasters getting on my nerves...
Whatever muffler you chose you still need to get the exhaust to exit out back out from under the truck the resignation from the exhaust will still be there maybe try tail pipes first. Well that's my 2 cents worth of advice. And an X pipe helps alot too
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#4 |
Registered User
Join Date: Apr 2010
Location: Boise, ID
Posts: 1,280
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Re: Flowmasters getting on my nerves...
Sorry but I am not afraid to admit that I am learning. What is dumped?
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#5 |
Registered User
Join Date: Oct 2011
Location: Houston, Texas
Posts: 884
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Re: Flowmasters getting on my nerves...
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#6 | |
Registered User
Join Date: Nov 2008
Location: Italy
Posts: 1,278
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Re: Flowmasters getting on my nerves...
Quote:
![]() The muffler shop tech told me that a dumped setup causes the sound to reverberate between the ground and bed causing a lot of sound to be transferred into the cab.
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'68 C-10 SWB 383 Stroker (Sold 3/2/2013) '87 R2500 LWB 454 TBI converted to Carb ![]() |
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#7 |
Registered User
Join Date: Jun 2012
Posts: 1,089
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Re: Flowmasters getting on my nerves...
Yeah I would run them out the back first, this way its still loud just behind you..
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#8 |
Registered User
Join Date: Jul 2011
Location: Farmville, Va
Posts: 3,026
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Re: Flowmasters getting on my nerves...
I must agree since I did the same thang, run them out the back and get that droning noise out of your head.
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#9 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Flowmasters getting on my nerves...
I was a Flowmaster guy for about 20 years, until I bought my first Magnaflows. Now I won't ever own any more Flowmasters.
I prefer the raspy, snarl sound of Magnaflow over the deep resonating of Flowmasters. |
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#10 | |
C/10 junkie
Join Date: Nov 2010
Location: Stockton Ca
Posts: 9,093
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Re: Flowmasters getting on my nerves...
Quote:
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Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!" ![]() |
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#11 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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I guess I'm the odd ball here. I run generic mufflers and love them. No since in paying that kind of money for something never seen in my opinion.
By the cheapest muffler you can. I have mine dumped over the rear end. I can talk normal in the cab and hear the radio fine. I wouldn't spend a bunch on a muffler for a D/D. ![]() ![]()
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#12 |
Registered User
![]() Join Date: Mar 2007
Location: Marbury, Alabama
Posts: 195
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Re: Flowmasters getting on my nerves...
I think this is more of the sound I want. The flows sound hollow.
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#13 |
Registered User
Join Date: Sep 2012
Location: canoga park, ca.
Posts: 120
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Re: Flowmasters getting on my nerves...
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#14 |
BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 19,866
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Re: Flowmasters getting on my nerves...
I just picked up an off topic truck (old unibody) with a healthy 350 Chev, 3 inch exhaust and Flowmasters. It dumps about midway under the box. The cab is all bare metal with no insulation at all. Its very loud in the cab and right now it just gives me a big grin when I jump on it =)
Now if I had to drive it all the time I would go insane. Future plans are to completely insulate the cab with Lizard Skin sound and heat barrier. Its just a fun little truck so I wont be going crazy. I did have Flow 40s on a 71, but they were pretty far back in the system and the exhaust ended up all the way out the back with no dump. It was fine in the cab.
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#15 |
Registered User
Join Date: Jan 2012
Location: Glencoe Alabama
Posts: 510
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Re: Flowmasters getting on my nerves...
I've got a good ole Thrush glasspack exiting out the rear and it sounds like my old truck back in the 70's. My Monte has 3" series 40 flowmasters and I can't hear anything in the cockpit. I love both sounds.
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72 Cheyenne super 10 08 3500 HD 4dr dually 12 ford flex (wifes ride) 76 Monte Carlo 83 Chevy short wide Silverado 96 Mazda Miata, 2000 Allegro Bus |
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#16 |
Registered User
![]() Join Date: Mar 2012
Location: Okanagan Valley, BC, Canada
Posts: 1,237
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Re: Flowmasters getting on my nerves...
I have a flowmaster 40 coming off stock manifolds, and it dumps under the bed of my 78 c10. I thought it was loud until I got my 1970 with long tube headers and dual 40's running out the back. Its really loud, but now that Im used to it, I want it louder. I just sounds so good when you stomp on it. Perfectly tuned for the ears.
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#teamlongbed "I refuse to go disc brakes. I actually love drum brakes. It makes for an adventure." - 50bomb 1978 Chevy shop truck - static 6/8" 1970 GMC 1500 - Accuair eLevel Resto-mod http://67-72chevytrucks.com/vboard/s...d.php?t=537497 |
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#17 |
Registered User
![]() Join Date: Mar 2010
Location: tulsa,ok
Posts: 1,085
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Re: Flowmasters getting on my nerves...
I had flowmasters on everything I owned for years, now I prefer Dynomax mufflers. just my .02 cents.
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MY BUILD THREAD http://67-72chevytrucks.com/vboard/s...d.php?t=423629 1969 custom/10 swb--SOLD 1968 swb 50th anniv.--SOLD 1967 camaro ss/rs..LS-6-speed, 16-year long project 1956 chevy nomad 1955 chevy 210 2-dr sedan 1978 el-camino ss 1-owner |
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#18 |
Registered User
Join Date: Sep 2012
Location: Queen Creek, AZ
Posts: 551
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Re: Flowmasters getting on my nerves...
I am running the 50 series flowmasters on my 69' 454 and they sound amazing exiting behind the truck but too quiet for me. Might be what your looking for if your staying with flowmaster. I personally am going to switch it up to super 44's or 40's when I can but I drive about 10x a year and want it wicked loud!
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#19 |
Registered User
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,506
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Re: Flowmasters getting on my nerves...
Pipes out the back will help get rid of the resonance even if you run straight pipes. It was bad enough with my 71 when I had a pair of burned out glass packs that had been on a 65 I had had that turned out and exited in front of the rear wheels. It was fun on runs to town but I drive 23 miles to work and the drone got pretty tiresome after a couple of years. I went to Headers, turbos (unknown brand but free) and tail pipe that exit behind the rear wheels and it's comfortable in the cab now but it still has a good rumble and sounds great with the windows down.
I've always said that I like a sweet and distinctive set of pipes but I've long outgrown loud just for the sake of being loud. |
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#20 |
Account Suspended
Join Date: Oct 2012
Location: phx, az
Posts: 868
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Re: Flowmasters getting on my nerves...
mufflers make your motor sound neat, but you cant hide horspower.
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#21 |
Registered User
Join Date: Jan 2000
Location: ca
Posts: 1,110
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Re: Flowmasters getting on my nerves...
I'm running Flow tech Terminators and am happy with them. The truck was my daily driver for a few years & they're not too loud inside. They don't have that hollow Flowmaster sound (which I don't care for)
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68 short step, 406/700r4, 9" w/discs. |
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#22 |
Divorced .....WITH KIDS
Join Date: Dec 2003
Location: mississippi
Posts: 619
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Re: Flowmasters getting on my nerves...
I have flow master super 40s dumped . Noise really only bothers me after a long ride and I'm stopped somewhere . The main problem isnt the noise it's the dust. Everyday I drive the truck I have to wash it. Next off day I'm running pipes out back . Didn't want to cause I plan on bagging truck this winter .
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1969 GMC SWB 1975 Chevy Malibu 80k 1963 Ford Galaxie 63k (inherited) 2005 Nissan Armada (wife's idea) |
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#23 | |
Registered User
Join Date: Nov 2008
Location: Italy
Posts: 1,278
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Re: Flowmasters getting on my nerves...
Quote:
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'68 C-10 SWB 383 Stroker (Sold 3/2/2013) '87 R2500 LWB 454 TBI converted to Carb ![]() |
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#24 |
Registered User
Join Date: Jun 2011
Location: Central OR
Posts: 703
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Re: Flowmasters getting on my nerves...
I run Summit El Cheapo Turbos that terminate at the end of the 12 foot bed. It not obnoxious at idle but not quiet either. The cab is quiet. Worth every penny.
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1955 GMC 250 8 Flatbed 1971 C30 157" 350 4spd 10' Flatbed 81 GMC K30 CnC 9' Flatbed 454 T400 89 GMC Jimmy Stock https://67-72chevytrucks.com/vboard/...d.php?t=810958 71 LT1 Convertible, 72 Coupe 69 CJ5, 75 CJ6, 67 M715, 72 M35A2 Bobbed, 95 XLC2 |
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#25 |
Registered User
![]() Join Date: Mar 2007
Location: Marbury, Alabama
Posts: 195
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Re: Flowmasters getting on my nerves...
I think I am going to run them out the back first and see if it helps. This is the cheapest route right now.
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