flowmaster 40 vs 44 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cameyer · 02-11-2013, 04:36 AM

I'm looking to upgrade the mufflers on my 64 k10 and want a really aggressive muffler. i've got a 327 from a 68 c20 in mine and am looking for a really loud rumble at idle, right now i'm looking at flowmasters original 40 and their super 44 what do you guys think?

iluvmyak47 · 02-11-2013, 04:39 PM

Hey there! Before i bought my 65 c10, i had a 79 trans am with a big lopey cam, full lengths and a 2 1/2 h pipe with a pair of 44's dumped. It sounded awsome at idle, and resonated like you wouldnt believe. I used to set off car alarms when i rolled through parking lots. Then i bought a 72 grand prix and ran 2 1/2 true dual from the manifolds dumped at the rear end with a pair of summit racing full welded single chambers. That car was as loud as my t/ and i only spent abot $60 for the pair of mufflers. But if your going for best sound at idle go with the single chamber 40's.
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Billett · 02-11-2013, 04:54 PM

http://youtu.be/n8MZI8fIo4E

I love them, but if I were to do it again I'd go with Hooker Aero chambers or Hooker max flows.

As far as flowmasters go, Super 40's or original 40s. I can hear mine at idle quite a ways a way. The 40's do that as well, but don't have quite the same high pitch at higher rpms.

DesertCat · 02-11-2013, 05:00 PM

The PO of my truck put some 40's on it. I hate them, terrible drone, just too much. As soon as I can they are getting 86'd.

There is a difference between "loud" and "noise", the Flowmasters are simply the latter IMHO.

forestb · 02-11-2013, 05:37 PM

If you want them loud get some turn downs. Guaranteed to set off car alarms and wake you neighbors up in the morning. My new exhaust will not have them do to the for mentioned reasons.

cameyer · 02-12-2013, 02:12 AM

Thanks for the input guys. I think I'm going to lean more towards the super 44's I like their deep tone
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**dtkarst** · 02-12-2013, 03:11 AM

Only 44s I have are on my 88 monte ss with a 383. Best sounds I have heard from a muffler
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1Bad62Pro/Street · 02-13-2013, 02:16 PM

Flowmasters:

Differences in 1, 2, and 3 chamber mufflers.

1 Chamber - aggressive tone.
2 Chamber - moderate tone.
3 Chamber - mild tone.

Sound Testing: Flowmasters 8 Hottest Mufflers -...

**First c10** · 05-19-2013, 01:14 AM

Anyone have the pro series?
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casey g · 05-19-2013, 01:45 AM

not sure if this will help but this is a full stainless system built by flowmaster for my truck.

super 40s. let me know if the link doesnt work.

https://www.facebook.com/#!/photo.ph...type=2&theater

chevyrestoguy · 05-19-2013, 07:46 AM

If you haven't bought the mufflers yet, I would encourage you to do some research on mufflers before you buy.

Believe me, the sound of a Flowmaster will get old quickly, especially the drone at highway speeds. Forget about having a conversation without shouting or listening to the stereo at lower levels. I had 40 Series Flowmasters in 3", loved them at first, and then changed them out.

There are much better mufflers out there. The packed mufflers like Magnaflows, Dynomax and Borla always make 10-15 more horsepower on the dyno, and that's been proven many, many times. The cool thing about the packed mufflers is that they have a nice rumble at idle, and they get loud when you romp on it, and they are much more liveable at highway speeds. Plus, some of them, like the Magnaflows have a polished stainless outer case, unlike the Flowmasters, which are painted steel.

chevyrestoguy · 05-19-2013, 07:52 AM

If you haven't bought the mufflers yet, I would encourage you to do some research on mufflers before you buy.

Believe me, the sound of a Flowmaster will get old quickly, especially the drone at highway speeds. Forget about having a conversation without shouting or listening to the stereo at lower levels. I had Flowmasters, loved them at first, and then changed them out.

There are much better mufflers out there. The packed mufflers like Magnaflows, Dynomax and Borla always make 10-15 more horsepower on the dyno, and it's been proven many, many times. The cool thing about the packed mufflers is that they have a nice rumble at idle, and they get loud when you romp on it, and they are much more liveable at highway speeds. Plus, some of them, like the Magnaflows have a polished stainless outer case, unlike the Flowmasters, which are painted steel.

61_FL_Apache · 05-19-2013, 08:49 AM

From the demo video, I like the Super 44's best.

WCHLVR · 05-19-2013, 01:56 PM

Just got done installing 2 1/2" dual side exit on my 64. I went with the Thrush Welded Muffler (Flowmaster clone) and it sounds outstanding! The price is really nice too.

Snowbound · 05-20-2013, 01:33 AM

I ran Super 40 on my Buick and there was no drone at all.

I think the key is to run the system all the way out the back. If you dump it under the cab or box, you will get a drone no matter what brand you use.
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mud.man.rj · 05-20-2013, 02:28 AM

I have run all kinds of mufflers and everything I own has 400-500 plus Hp and always use super 44's on my builds and all the other builds I do, always happy with no drone to speak off, kicks butt at idle and on the highway.

WCHLVR · 05-20-2013, 02:37 AM

Quote:

Originally Posted by Snowbound

I ran Super 40 on my Buick and there was no drone at all.

I think the key is to run the system all the way out the back. If you dump it under the cab or box, you will get a drone no matter what brand you use.
Posted via Mobile Device

Truth ^ My side exit drones pretty well but only when I'm on the loud pedal.

At least it covers up all the other noises my truck makes! LMAO

ol_skool_chevy · 05-20-2013, 08:48 AM

I have flowmaster 50's and they sound same as the 40 but No drone at upper speeds..I love them....they cost a bit more but well worth it
https://www.youtube.com/watch?v=AiZgAFAtw0o

ol_skool_chevy · 05-20-2013, 08:50 AM

summit makes a nice one also 29.00 each i like them also

https://www.youtube.com/watch?v=2AMiKmGeNa0

tincan1966 · 05-20-2013, 08:52 AM

Quote:

Originally Posted by Snowbound

I ran Super 40 on my Buick and there was no drone at all.

I think the key is to run the system all the way out the back. If you dump it under the cab or box, you will get a drone no matter what brand you use.
Posted via Mobile Device

That's exactly what I was thinking. I've had 40's on my big block '69 C30 with full tail pipes and no drone at all. Also just a little bit of dynamat or hushmat or any kind of sound deadener helps a lot.

I've also ran the Pypes brand of mufflers and they are excellent also

**First c10** · 05-20-2013, 11:54 AM

Has anyone used the pro series?

mud.man.rj · 05-20-2013, 01:30 PM

Haven't used the pro series but heard them, seem to sound simular, the 40's are a bit longer than the 44's also so tend to drone a bit less and also a bit quieter. I tend to use the 44's for the better idle sound and the better fitment due to being short.

**1971 GMC SHORTY** · 05-20-2013, 01:37 PM

I've Used Ever Type Of Muffler Out There.. I Have Used Flow Master For Ever. Did a Tour Of Magna flow I use Them On Ever Build Now I Can Tell The Difference Magna flow Sound Better
My 2 Cents
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scoot_mcgrute · 05-20-2013, 03:32 PM

I ran Hedman Elite headers and 50 series Flowmasters on my 77 Chev. Sounded great but really didn't drone too bad at all. When I get another old truck I'll probably run something similar, maybe an MBRP to match my DD Silverado.

Mud - YouTube

K98AL · 05-21-2013, 02:47 PM

Not trying to hijack here, but I've got dual no-name turbos on my 235. Fenton headers, and the first thing my 77 year-old Dad said was "it's too quiet".

I'm debating on putting a set of Cherry Bombs or Cherry Bomb glasspacks on it...any suggestions? Pros and Cons? I'm not trying to piss off the neighbors, but I want to hear that rumble.

02-11-2013, 04:36 AM	#1
cameyer Registered User Join Date: Sep 2012 Location: santa cruz california Posts: 89	flowmaster 40 vs 44 I'm looking to upgrade the mufflers on my 64 k10 and want a really aggressive muffler. i've got a 327 from a 68 c20 in mine and am looking for a really loud rumble at idle, right now i'm looking at flowmasters original 40 and their super 44 what do you guys think?

02-11-2013, 04:39 PM	#2
iluvmyak47 Registered User Join Date: Nov 2012 Location: Elk Grove CA Posts: 5	Re: flowmaster 40 vs 44 Hey there! Before i bought my 65 c10, i had a 79 trans am with a big lopey cam, full lengths and a 2 1/2 h pipe with a pair of 44's dumped. It sounded awsome at idle, and resonated like you wouldnt believe. I used to set off car alarms when i rolled through parking lots. Then i bought a 72 grand prix and ran 2 1/2 true dual from the manifolds dumped at the rear end with a pair of summit racing full welded single chambers. That car was as loud as my t/ and i only spent abot $60 for the pair of mufflers. But if your going for best sound at idle go with the single chamber 40's. Posted via Mobile Device

02-11-2013, 04:54 PM	#3
Billett Registered User Join Date: Jun 2012 Location: Pittsgrove, NJ Posts: 1,502	Re: flowmaster 40 vs 44 http://youtu.be/n8MZI8fIo4E I love them, but if I were to do it again I'd go with Hooker Aero chambers or Hooker max flows. As far as flowmasters go, Super 40's or original 40s. I can hear mine at idle quite a ways a way. The 40's do that as well, but don't have quite the same high pitch at higher rpms. __________________ Will 1968 C10 - Project Texa Go 6.0/4L80e 2003 Mitsubishi Lancer Evolution 2002 Ford Excursion 7.3L 2024 Toyota Sienna

02-11-2013, 05:00 PM	#4
DesertCat Registered User Join Date: Mar 2011 Location: Valley of the Sunstroke, Arizona Posts: 1,210	Re: flowmaster 40 vs 44 The PO of my truck put some 40's on it. I hate them, terrible drone, just too much. As soon as I can they are getting 86'd. There is a difference between "loud" and "noise", the Flowmasters are simply the latter IMHO. __________________ My build thread - Devastation and Reform http://67-72chevytrucks.com/vboard/s...d.php?t=567131

02-11-2013, 05:37 PM	#5
forestb Registered User Join Date: Jan 2009 Location: Burbank, CA Posts: 3,621	Re: flowmaster 40 vs 44 If you want them loud get some turn downs. Guaranteed to set off car alarms and wake you neighbors up in the morning. My new exhaust will not have them do to the for mentioned reasons.

02-12-2013, 02:12 AM	#6
cameyer Registered User Join Date: Sep 2012 Location: santa cruz california Posts: 89	Re: flowmaster 40 vs 44 Thanks for the input guys. I think I'm going to lean more towards the super 44's I like their deep tone Posted via Mobile Device

02-12-2013, 03:11 AM	#7
dtkarst Senior Member Join Date: Nov 2010 Location: Hays, KS Posts: 2,490	Re: flowmaster 40 vs 44 Only 44s I have are on my 88 monte ss with a 383. Best sounds I have heard from a muffler Posted via Mobile Device

05-19-2013, 01:14 AM	#9
First c10 Registered User Join Date: Dec 2012 Location: Los Banos CA Posts: 2,706	Re: flowmaster 40 vs 44 Anyone have the pro series? Posted via Mobile Device __________________ 1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR SOLD GO GO!!!

05-19-2013, 01:45 AM	#10
casey g Registered User Join Date: Oct 2011 Location: Coeur d'alene ID Posts: 509	Re: flowmaster 40 vs 44 not sure if this will help but this is a full stainless system built by flowmaster for my truck. super 40s. let me know if the link doesnt work. https://www.facebook.com/#!/photo.ph...type=2&theater

05-19-2013, 07:46 AM	#11
chevyrestoguy Registered User Join Date: Mar 2005 Location: apple valley, ca Posts: 2,670	Re: flowmaster 40 vs 44 If you haven't bought the mufflers yet, I would encourage you to do some research on mufflers before you buy. Believe me, the sound of a Flowmaster will get old quickly, especially the drone at highway speeds. Forget about having a conversation without shouting or listening to the stereo at lower levels. I had 40 Series Flowmasters in 3", loved them at first, and then changed them out. There are much better mufflers out there. The packed mufflers like Magnaflows, Dynomax and Borla always make 10-15 more horsepower on the dyno, and that's been proven many, many times. The cool thing about the packed mufflers is that they have a nice rumble at idle, and they get loud when you romp on it, and they are much more liveable at highway speeds. Plus, some of them, like the Magnaflows have a polished stainless outer case, unlike the Flowmasters, which are painted steel. __________________ Check out my latest endeavor: https://roundsixpod.com My build threads: '55 Chevy: http://67-72chevytrucks.com/vboard/s...d.php?t=247512 '64 C-20: http://67-72chevytrucks.com/vboard/s...d.php?t=446527

05-19-2013, 07:52 AM	#12
chevyrestoguy Registered User Join Date: Mar 2005 Location: apple valley, ca Posts: 2,670	Re: flowmaster 40 vs 44 If you haven't bought the mufflers yet, I would encourage you to do some research on mufflers before you buy. Believe me, the sound of a Flowmaster will get old quickly, especially the drone at highway speeds. Forget about having a conversation without shouting or listening to the stereo at lower levels. I had Flowmasters, loved them at first, and then changed them out. There are much better mufflers out there. The packed mufflers like Magnaflows, Dynomax and Borla always make 10-15 more horsepower on the dyno, and it's been proven many, many times. The cool thing about the packed mufflers is that they have a nice rumble at idle, and they get loud when you romp on it, and they are much more liveable at highway speeds. Plus, some of them, like the Magnaflows have a polished stainless outer case, unlike the Flowmasters, which are painted steel. __________________ Check out my latest endeavor: https://roundsixpod.com My build threads: '55 Chevy: http://67-72chevytrucks.com/vboard/s...d.php?t=247512 '64 C-20: http://67-72chevytrucks.com/vboard/s...d.php?t=446527

05-19-2013, 08:49 AM	#13
61_FL_Apache Who Me? Join Date: Sep 2010 Location: Royal Palm Beach, FL Posts: 4,067	Re: flowmaster 40 vs 44 From the demo video, I like the Super 44's best. __________________ Steve 1997 Tahoe LT 4D 2WD (DD) 2001 Blazer 4D 2WD 1961 Apache 10 (sold) 1965 C10 Stepper (sold)

05-19-2013, 01:56 PM	#14
WCHLVR Registered User Join Date: Apr 2013 Location: Bend, Oregon Posts: 126	Re: flowmaster 40 vs 44 Just got done installing 2 1/2" dual side exit on my 64. I went with the Thrush Welded Muffler (Flowmaster clone) and it sounds outstanding! The price is really nice too.

05-20-2013, 01:33 AM	#15
Snowbound Registered User Join Date: Aug 2002 Location: Westbank, BC Posts: 403	Re: flowmaster 40 vs 44 I ran Super 40 on my Buick and there was no drone at all. I think the key is to run the system all the way out the back. If you dump it under the cab or box, you will get a drone no matter what brand you use. Posted via Mobile Device __________________ 1965 Chevy Short Box Stepside, 230 - 3 speed, 4:11 gears, original paint rust free survivor. Now sporting a 383 SBC and TKO-600

05-20-2013, 02:28 AM	#16
mud.man.rj Registered User Join Date: Dec 2011 Location: Creighton Sask. Canada Posts: 4,121	Re: flowmaster 40 vs 44 I have run all kinds of mufflers and everything I own has 400-500 plus Hp and always use super 44's on my builds and all the other builds I do, always happy with no drone to speak off, kicks butt at idle and on the highway.



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05-20-2013, 08:48 AM	#18
ol_skool_chevy Registered User Join Date: May 2010 Location: Hillsboro, Oregon 97123 Posts: 1,300	Re: flowmaster 40 vs 44 I have flowmaster 50's and they sound same as the 40 but No drone at upper speeds..I love them....they cost a bit more but well worth it https://www.youtube.com/watch?v=AiZgAFAtw0o __________________ Measure with a yard stick Mark with Chalk Cut with a torch Built it yourself, don't count on others to to do it for you or with you. It will never get done

05-20-2013, 08:50 AM	#19
ol_skool_chevy Registered User Join Date: May 2010 Location: Hillsboro, Oregon 97123 Posts: 1,300	Re: flowmaster 40 vs 44 summit makes a nice one also 29.00 each i like them also https://www.youtube.com/watch?v=2AMiKmGeNa0 __________________ Measure with a yard stick Mark with Chalk Cut with a torch Built it yourself, don't count on others to to do it for you or with you. It will never get done

05-20-2013, 11:54 AM	#21
First c10 Registered User Join Date: Dec 2012 Location: Los Banos CA Posts: 2,706	Re: flowmaster 40 vs 44 Has anyone used the pro series? __________________ 1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR SOLD GO GO!!!

05-20-2013, 01:30 PM	#22
mud.man.rj Registered User Join Date: Dec 2011 Location: Creighton Sask. Canada Posts: 4,121	Re: flowmaster 40 vs 44 Haven't used the pro series but heard them, seem to sound simular, the 40's are a bit longer than the 44's also so tend to drone a bit less and also a bit quieter. I tend to use the 44's for the better idle sound and the better fitment due to being short.

05-20-2013, 01:37 PM	#23
1971 GMC SHORTY Senior Member Join Date: Apr 2009 Location: SAN FERNANDO VALLE SOL CAL Posts: 1,064	Re: flowmaster 40 vs 44 I've Used Ever Type Of Muffler Out There.. I Have Used Flow Master For Ever. Did a Tour Of Magna flow I use Them On Ever Build Now I Can Tell The Difference Magna flow Sound Better My 2 Cents Posted via Mobile Device __________________ 1966 GMC K25 V6 351E Original Utility Truck 2000 C3500 Hot Rod Utility Truck 2003 ROAD KING 100th 124ci 6 Speed 145CI M/P Pro Street FXR 2002 FXDP 2007 2500HD DURAMAX. DD Studio Teamsters / Mechanic Retired GM Master Tech 20 Years Retired Ford Tech 15 Years

05-21-2013, 02:47 PM	#25
K98AL Registered User Join Date: Dec 2011 Location: Sapulpa, OK Posts: 187	Re: flowmaster 40 vs 44 Not trying to hijack here, but I've got dual no-name turbos on my 235. Fenton headers, and the first thing my 77 year-old Dad said was "it's too quiet". I'm debating on putting a set of Cherry Bombs or Cherry Bomb glasspacks on it...any suggestions? Pros and Cons? I'm not trying to piss off the neighbors, but I want to hear that rumble.

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