Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Flowmaster Muffler/Exhaust

Thread Tools
 
Search this Thread
 
Old Aug 10, 2005 | 08:45 AM
  #21  
-Q-'s Avatar
-Q-
TECH Fanatic
iTrader: (10)
 
Joined: Mar 2003
Posts: 1,106
Likes: 2
From: St Simons Isl, GA
Default

I have a Flowmaster on my car and like it pretty well. Sounds freakin awesome in my opinion. I made good power with it too. It was on the car when I got it, so if I had to buy a catback to replace the stock unit, I honestly would go with something else just for the hp. But since I already had it, I'd rather spend the $300+ on other mods.
Reply
Old Aug 10, 2005 | 08:54 AM
  #22  
LT1MAN's Avatar
TECH Fanatic
20 Year Member
iTrader: (6)
 
Joined: Mar 2005
Posts: 1,723
Likes: 0
From: Charlotte, NC
Default

i have an lt1 with a flowmaster and i wouldn't have anything else, sure the flow may restrict 2 more horsepower or so than some of the other brands but a little restiction = a better sound. personally, imo i think its worth 2 horsepower for a great sound.

on an ls1 note, my brother has a 98 ls1 camaro and when he bought it, it had a magnablow on it, sounded pansy as hell compared to mine. so he bought an 80 series blowmaster (same as mine) and got a much better sound and picked up some hp too. doesn't sound anywhere near as good as mine but it sounds a lot better.
Reply
Old Aug 10, 2005 | 10:31 AM
  #23  
KrazyDan's Avatar
TECH Fanatic
 
Joined: Jan 2003
Posts: 1,415
Likes: 1
From: San Diego/Schertz,Texas
Default

its sound awsome, but so do a lot of other catbacks. find one that flows better
Reply
Old Aug 10, 2005 | 11:56 AM
  #24  
Redneck Z's Avatar
TECH Addict
iTrader: (3)
 
Joined: Feb 2005
Posts: 2,305
Likes: 2
From: Citrus Heights, CA
Default

Speaking of sound. I put my 98 w/magnaflow next to my friends 98 w/flowmaster side by side. At the time we had the same mods. I would have payed someone $50 if they could have told me what the difference was. They sounded NEARLY identical. I wouldn't say the "flowmaster sound" is worth losing hp over. There are too many great sounding mufflers that flow good to put a bottleneck on your car. If sound is an issue check out www.ls1sounds.com.
Reply
Old Aug 10, 2005 | 01:10 PM
  #25  
LS1 Sounds's Avatar
TECH Fanatic
iTrader: (11)
 
Joined: Nov 2003
Posts: 1,781
Likes: 0
From: Marysville, WA
Default

The only way I would put Flowmasters on my car is with a true-dual setup.
Reply
Old Aug 10, 2005 | 02:00 PM
  #26  
redmist's Avatar
TECH Regular
 
Joined: Feb 2004
Posts: 438
Likes: 0
Default

I have a dual in/out 2.5 flowmaster crossover muffler with no cats, sounds awesome but not too loud. Pipes exit right before the rear tires (BMW conversion). No intention of changing it.
Reply
Old Aug 10, 2005 | 07:16 PM
  #27  
NHRAMAN's Avatar
TECH Senior Member
iTrader: (1)
 
Joined: Apr 2005
Posts: 8,807
Likes: 0
From: Vancouver,[KITSILANO].B.C. Canada *WestCoast*
Talking

Originally Posted by Redneck Z
QUOTE: Flowmaster and cutout sound great--1-3 hp less than a straight through muffler--not much really,considering you get that classic sound..

From what I've seen it's more like 5-7rwhp on a stock car and 12-15+rwhp with heads and cam. IMO I think of a classic flowmaster sound on a mustang. The LS1's don't sound any more special with a flowmaster than they do with any other muffler out there. I'd rather have a good flowing muffler, so I don't have to drive around everywhere with my cutout open to bypass a poor flowing flowmaster. My car is loud with the cutout open and screams "please give me a ticket."
Well,there is some doubt on the flow--tests are done with water-not air-although obviously a straight-through muffler is going to be better---2 different types of flow patterns-apparently the companies do not say this-[I have seen dyno-sheets posted that go both ways,different cars,different days,different dyno's,and operators!]-info was on another board---anyway,I like the sound with cutout closed as well--if it is as much as you say,it is probably at 5500-6000 rpm,which I don't touch in this car..with cutout open,and some going through the flowmaster,it sounds good to me,in and out of the car...to each their own sound...
Reply
Old Aug 11, 2005 | 04:48 PM
  #28  
8GTOKLR's Avatar
TECH Enthusiast
iTrader: (6)
 
Joined: Apr 2005
Posts: 730
Likes: 0
From: Socal
Default

Originally Posted by -Q-
I have a Flowmaster on my car and like it pretty well. Sounds freakin awesome in my opinion. I made good power with it too. It was on the car when I got it, so if I had to buy a catback to replace the stock unit, I honestly would go with something else just for the hp. But since I already had it, I'd rather spend the $300+ on other mods.

Thats what I am saying. Why spend another 300+ for maybe a slight gain. I dont roadrace so it makes no difference to me. Anything is better than a kinked factory exhaust. Us poor people can go out and buy the corsca or the gmmg. I feel sorry for the poor schmuch that put the flowmaster on in the first place..lol blame him lol. In the end its 300 we dont gotta spend and What i spent on chip or ftra or some form of short throw shifter
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Aug 11, 2005 | 08:52 PM
  #29  
2_wacko's Avatar
TECH Veteran
iTrader: (2)
 
Joined: Nov 2002
Posts: 4,274
Likes: 0
From: WestTexas
Default

I have a flow it sounds ok but I got a cutout to go with it.
Reply
Old Aug 16, 2005 | 06:28 PM
  #30  
magius231's Avatar
TECH Resident
20 Year Member
Photogenic
Photoriffic
Liked
iTrader: (8)
 
Joined: Aug 2005
Posts: 753
Likes: 5
From: Winston Salem, NC
Default

depends on what you want. I put a flowmaster on mine because I liked the sound, and because I can't afford $800+ for headers/duals yet. It sounds good, only cost me $135 installed, and will work until I get the duals. If your wanting it as your final muffler system I probably wouldn't do it...
Reply




All times are GMT -5. The time now is 10:58 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE