Glasspacks or flowmasters? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Tx Firefighter · 01-16-2004, 09:18 PM

I guess you guys didn't read that muffler flow comparison that Car Craft did a few years back. They tested all of the popular mufflers on a flow machine and completely debunked the glasspacks are restrictive theory.

They found that glasspacks flowed as well as pretty much any other muffler.

Anyone who really believes they will get a 15% horsepower gain through free flowing mufflers has bought into the hype surrounding them. Seriously, that would be anywhere from 35-75 horses on a street engine.

baggedondubs67 · 01-16-2004, 09:35 PM

I had glass packs on my truck when I first got it I put them out the back with 3inch pipe to the rearend and then 2 1/2 to the back with 3 inch crome tips and the sound was perfect loud and full of rumble. I also had them out the side before the tire with three inch pipe way to loud but cool. Right now I have 22 inch long smittys glasspacks sound old school dumped and header electronic openers for the loud noise. but its up to you, I think flows sound weak they are good for newer trucks not old good luck on a hard choice.

*rage'nrat638* · 01-16-2004, 09:40 PM

HOOKER AREO CHAMBERS

cheaper too......welded...57.00 ea at summit

TODDS 72 · 01-16-2004, 10:13 PM

Magnaflows

CG · 01-16-2004, 10:23 PM

i like the flows but reading all the posts it looks like you could flip a coin and come out all right

68CST327 · 01-16-2004, 10:35 PM

Magnaflows, baby!

They have that deep throaty roar that sound like the old muscle cars. No offense to the people that like Flowmasters, but they are way too abrasive/harsh sounding to my ears. Not to mention everybody's runnin' em.

special70gmc · 01-16-2004, 10:37 PM

headers,h-pipe and 40 flos dumped yeas its verry loud!

ckenwright · 01-16-2004, 10:40 PM

http://www.boyleworks.com/ta400/psp/exhaust.html

Follow this. It shows a product comparison.

junkyardjohn · 01-16-2004, 11:40 PM

1972C10 -- I GOT 4 FLOWMASTER 40s FROM THAT GUY A WHILE BACK. I THINK I PAID $35 EACH & $15 A PAIR FOR SHIPPING. GREAT MUFFLERS & A GREAT GUY TO DEAL WITH.

JOHN

*1972C10* · 01-17-2004, 02:13 AM

Yeah i just got a pair or the 2 1/2 inchers buy it now 37.49 10 shippin on the first one and 7 on the second ended up being 91.98 shipped for two.

A.P. · 01-17-2004, 04:44 AM

Here is some good info. on mufflers.

http://www.nsxprime.com/FAQ/Miscella...austtheory.htm

Broken_down? · 01-17-2004, 02:43 PM

alot of opinions.. mabye it would help if we had some actual sound. just a thought

rich

danho · 01-17-2004, 03:03 PM

If you want to hear em first go to Flowmaster's website , they have sound bytes.
If you want to hear some glasspacks, park in front of the local high school at lunch time. J/K...gawd i'm getting old.
Dan.

lukecp · 01-17-2004, 03:06 PM

Quote:

Originally posted by danho

If you want to hear some glasspacks, park in front of the local high school at lunch time. J/K...gawd i'm getting old.
Dan.

LOL! Defenitly true around here. Actually....i think i was the only guy with Flows when i was in HS....except for a pair of '97 K10s that had cats with the flows and sounded like crap....

gotmud · 01-17-2004, 03:13 PM

Quote:

Originally posted by baggedondubs67
snip.....Right now I have 22 inch long smittys glasspacks sound old school dumped and header electronic openers for the loud noise. snip.....

Whats an electronic opener???

gmc67swb · 01-17-2004, 03:34 PM

I LIKE THE FLOWMASTERS. IT JUST DEPENDS ON WHAT SOUND YOU LIKE AND YOUR POCKET BOOK.

mtdave2 · 01-17-2004, 07:26 PM

magnaflows... glasspack sound, with out the popping! the flowmasters sounds like a hollow coffee can! butm we all have our own tastes

Injected68LS1 · 01-18-2004, 04:12 AM

I had 2 chamber flowmasters on my truck for the last 7 years. I liked them when I was younger but I tore them off last week because I couldn't take the noise anymore. They are loud.

I just bought some turbo mufflers from Summit racing for $15 each! They sound great and you can't beat them for the price. I actually feel like there is a little more power now. If you want a good mellow sound for cheap get these.

GreenMystChevy · 01-18-2004, 04:38 AM

I have glasspacks on my truck and flows on my Chevelle.

I feel that the sound coming from the flows belong on the built Velle while the sounds from the glasspacks work very well on my 'ol primered pick'mup truck.

My next truck will have flows because I personally believe that they just sound better than glasspacks and give it more of a "tuned" or "classy" sound.

If you go with glasspacks and want them louder, turn them backwards. Depending on the ones you get, it allows the gasses (sound) to travel over the pockets that trap the sound. Closer to straight pipes.

01-16-2004, 09:18 PM	#26
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	I guess you guys didn't read that muffler flow comparison that Car Craft did a few years back. They tested all of the popular mufflers on a flow machine and completely debunked the glasspacks are restrictive theory. They found that glasspacks flowed as well as pretty much any other muffler. Anyone who really believes they will get a 15% horsepower gain through free flowing mufflers has bought into the hype surrounding them. Seriously, that would be anywhere from 35-75 horses on a street engine. __________________ I'm on the Instagram- @Gearhead_Kevin

01-16-2004, 09:35 PM	#27
baggedondubs67 Registered User Join Date: Jan 2003 Location: Avenal, Ca. Posts: 22	glasspacks I had glass packs on my truck when I first got it I put them out the back with 3inch pipe to the rearend and then 2 1/2 to the back with 3 inch crome tips and the sound was perfect loud and full of rumble. I also had them out the side before the tire with three inch pipe way to loud but cool. Right now I have 22 inch long smittys glasspacks sound old school dumped and header electronic openers for the loud noise. but its up to you, I think flows sound weak they are good for newer trucks not old good luck on a hard choice. __________________ I would rather die on my feet then to live on my knees. Emiliano Zapata

01-16-2004, 09:40 PM	#28
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	HOOKER AREO CHAMBERS cheaper too......welded...57.00 ea at summit Last edited by rage'nrat638; 01-16-2004 at 09:44 PM.

01-16-2004, 10:13 PM	#29
TODDS 72 Not the nightly winner Join Date: Jul 2002 Location: CHARLEMONT MA.USA Posts: 763	Magnaflows Attached Images __________________ 72C10SWB BLUE 350/350 86K10LWB BLUE 5.7 700r4 7.5' fisher plow 93S10XCAB4X4 BLUE 4.3 4L60e 69gmc c10 v8 3 on the tree yellow 72k10 swb 350 3 on the tree green 86k15 swb5.0L 4spd brown

01-16-2004, 10:35 PM	#31
68CST327 Registered User Join Date: Aug 2002 Location: USA Posts: 443	Magnaflows, baby! They have that deep throaty roar that sound like the old muscle cars. No offense to the people that like Flowmasters, but they are way too abrasive/harsh sounding to my ears. Not to mention everybody's runnin' em. Last edited by 68CST327; 01-16-2004 at 10:37 PM.

01-16-2004, 10:23 PM	#30
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 20,019	i like the flows but reading all the posts it looks like you could flip a coin and come out all right

01-16-2004, 10:37 PM	#32
special70gmc Registered User Join Date: Sep 2002 Location: long island, new york Posts: 1,333	headers,h-pipe and 40 flos dumped yeas its verry loud! Attached Images __________________ 1986 c-10 swb 5/7 drop 20'' coys 1958 belair 2door

01-16-2004, 10:40 PM	#33
ckenwright Registered User Join Date: May 2003 Location: Phoenix, AZ Posts: 104	http://www.boyleworks.com/ta400/psp/exhaust.html Follow this. It shows a product comparison.

01-16-2004, 11:40 PM	#34
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,425	1972C10 -- I GOT 4 FLOWMASTER 40s FROM THAT GUY A WHILE BACK. I THINK I PAID $35 EACH & $15 A PAIR FOR SHIPPING. GREAT MUFFLERS & A GREAT GUY TO DEAL WITH. JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

01-17-2004, 02:13 AM	#35
1972C10 Account Suspended Join Date: Dec 2003 Location: Texas Posts: 2,686	Yeah i just got a pair or the 2 1/2 inchers buy it now 37.49 10 shippin on the first one and 7 on the second ended up being 91.98 shipped for two.

01-17-2004, 04:44 AM	#36
A.P. Black 72 Chevy Join Date: May 2002 Location: Los Angeles, California Posts: 662	Here is some good info. on mufflers. http://www.nsxprime.com/FAQ/Miscella...austtheory.htm

01-17-2004, 03:03 PM	#38
danho Pesemistic Optimist Join Date: Dec 2002 Location: Prineville, Oregon Posts: 227	If you want to hear em first go to Flowmaster's website , they have sound bytes. If you want to hear some glasspacks, park in front of the local high school at lunch time. J/K...gawd i'm getting old. Dan.

01-17-2004, 03:34 PM	#41
gmc67swb Registered User Join Date: Feb 2003 Location: Mesquite, Tx Posts: 396	I LIKE THE FLOWMASTERS. IT JUST DEPENDS ON WHAT SOUND YOU LIKE AND YOUR POCKET BOOK. __________________ GM 330HP/350, Magnuson 122HH, Tremec TKO 5spd

01-17-2004, 07:26 PM	#42
mtdave2 newly minted old timer Join Date: Dec 1999 Location: Hudson WI Posts: 3,521	magnaflows... glasspack sound, with out the popping! the flowmasters sounds like a hollow coffee can! butm we all have our own tastes __________________ ____________________________________________ 72 c20 longhorn 65k org miles and counting! 69 k10 Suburban

01-18-2004, 04:12 AM	#43
Injected68LS1 Registered User Join Date: Jul 2003 Location: So. Cal. Posts: 389	I had 2 chamber flowmasters on my truck for the last 7 years. I liked them when I was younger but I tore them off last week because I couldn't take the noise anymore. They are loud. I just bought some turbo mufflers from Summit racing for $15 each! They sound great and you can't beat them for the price. I actually feel like there is a little more power now. If you want a good mellow sound for cheap get these. __________________ 1968 Chev SWB with 1998 Corvette LS1 305hp and 320 ftlb to the wheels (stock engine!) AEM EMS and wideband O2 sensors Bowtie Overdrive's 700R4, stage 3 Baer 4 wheel discs and 20s http://iciclelanding.com/aperture?album=2049&view=album



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01-18-2004, 04:38 AM	#44
GreenMystChevy Registered User Join Date: Jan 2002 Location: Woodinville, WA Posts: 513	I have glasspacks on my truck and flows on my Chevelle. I feel that the sound coming from the flows belong on the built Velle while the sounds from the glasspacks work very well on my 'ol primered pick'mup truck. My next truck will have flows because I personally believe that they just sound better than glasspacks and give it more of a "tuned" or "classy" sound. If you go with glasspacks and want them louder, turn them backwards. Depending on the ones you get, it allows the gasses (sound) to travel over the pockets that trap the sound. Closer to straight pipes. __________________ Jeremy '71 C-10 '72 GMC K2500 '72 Nova (Dad's) '70 Chevelle SS '55 Sedan Delivery Attempting to build up this here 4x4...make her real tall and purty...well, maybe just tall

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