flowmasters
Moderator




Joined: Jul 2001
Posts: 5,225
Likes: 70
From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
40 series? 80 is loud enough for me though 
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1988 Jet Black IROC
5.7L W/ 64000 miles
Flowmaster Exhaust
Fully Loaded
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My IROC In Readers Rides
My IROC

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1988 Jet Black IROC
5.7L W/ 64000 miles
Flowmaster Exhaust
Fully Loaded
------------------
My IROC In Readers Rides
My IROC
To answer your question...
Flowmaster (Series 40) is the best (performance wise) and loudest system they put out...
-ONE2FLY
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1990 IROC-Z Camaro
Artic White w/ Gold Decals, 305cid V8 TPI, 700R4 Auto w/ OD, 16" 1992 Z-28 rims (w/ white trim), Z-rated Extremos 245/50/16s (new), Power Options, T-Tops, Tinted Windows, Flowmaster Exhuast w/ High-Flow Cat-Back....
Flowmaster (Series 40) is the best (performance wise) and loudest system they put out...
-ONE2FLY
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1990 IROC-Z Camaro
Artic White w/ Gold Decals, 305cid V8 TPI, 700R4 Auto w/ OD, 16" 1992 Z-28 rims (w/ white trim), Z-rated Extremos 245/50/16s (new), Power Options, T-Tops, Tinted Windows, Flowmaster Exhuast w/ High-Flow Cat-Back....
Supreme Member
Joined: Aug 2001
Posts: 1,236
Likes: 0
From: Warwick,RI
Car: 88 IROC-Z/00 GTP/05 VUE Redline
Engine: LB9 305/3800 SC/3.5 SOHC V-TEC
Transmission: A4/A4/A5
Chambered mufflers are bad for performance from what I hear...But hey if you like it go for it. A 30 series would have to be the loudest then since it's a single chamber muffler. But I see most people running 40 series mufflers.
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"Turn a 12 second dream into a 10 second reality"
406 SB coming soon..
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"Turn a 12 second dream into a 10 second reality"
406 SB coming soon..
Can you put a Flowmaster Series 30 on a 3rd Gen? I don't think I've ever seen or heard one... hmm...
-ONE2FLY
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1990 IROC-Z Camaro
Artic White w/ Gold Decals, 305cid V8 TPI, 700R4 Auto w/ OD, 16" 1992 Z-28 rims (w/ white trim), Z-rated Extremos 245/50/16s (new), Power Options, T-Tops, Tinted Windows, Flowmaster Exhuast w/ High-Flow Cat-Back....
-ONE2FLY
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1990 IROC-Z Camaro
Artic White w/ Gold Decals, 305cid V8 TPI, 700R4 Auto w/ OD, 16" 1992 Z-28 rims (w/ white trim), Z-rated Extremos 245/50/16s (new), Power Options, T-Tops, Tinted Windows, Flowmaster Exhuast w/ High-Flow Cat-Back....
Moderator




Joined: Jul 2001
Posts: 5,225
Likes: 70
From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
80 is loud enough for me! Cant imagine what a 40-30 would sound like!
------------------
1988 Jet Black IROC
5.7L W/ 64000 miles
Flowmaster Exhaust
Fully Loaded
------------------
My IROC In Readers Rides
My IROC
[This message has been edited by IROCThe5.7L (edited October 18, 2001).]
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1988 Jet Black IROC
5.7L W/ 64000 miles
Flowmaster Exhaust
Fully Loaded
------------------
My IROC In Readers Rides
My IROC
[This message has been edited by IROCThe5.7L (edited October 18, 2001).]
Trending Topics
iv seen my exact car with a 40 series on it, and to me it didn't seam as loud as my 80 series. but the rate about the same on their site, 40 series are best for dual exhaust set ups.
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- David
88' GTA 5.7L TPI MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series
http://www.geocities.com/david_angel_16
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- David
88' GTA 5.7L TPI MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series
http://www.geocities.com/david_angel_16
Supreme Member


Joined: Apr 2001
Posts: 1,342
Likes: 14
From: Dayton, O.
Car: 91 Camaro Z28
Engine: LS7
Transmission: M12/T56
Axle/Gears: 3.79
I think the 50 series comes with the Force II system and without headders mine sounds pretty mean (even with a 305). I cant imagine a 40 series with good headders!
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Chuck Kulchar
1991 RS
Open Element w/K&N
3" cat and Force II cat-back
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Chuck Kulchar
1991 RS
Open Element w/K&N
3" cat and Force II cat-back
are the american thunders good?
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Trent
---Car---
89 Firebird
305 L03 TBI A4
t-tops
Open Element Edelbrock Aircleaner w/ K&N air filter
Summit Chrome Valve Covers
---Stero---
Pioneer DEH-P730 Premium
Infinity 2way 4652 4x6's
Pioneer 4way ts-a6985 6x9's
profile cl640 110x4
Future:im profile 1200sx 900watt x 1, and a pioneer cdx-p1270 12 disk cd changer
------------------
Trent
---Car---
89 Firebird
305 L03 TBI A4
t-tops
Open Element Edelbrock Aircleaner w/ K&N air filter
Summit Chrome Valve Covers
---Stero---
Pioneer DEH-P730 Premium
Infinity 2way 4652 4x6's
Pioneer 4way ts-a6985 6x9's
profile cl640 110x4
Future:im profile 1200sx 900watt x 1, and a pioneer cdx-p1270 12 disk cd changer
Supreme Member
Joined: Mar 2001
Posts: 2,047
Likes: 0
From: The State of Hockey
Car: 1987 Trans Am GTA
Engine: Miniram'd 383, 24X LS1 PCM
Transmission: TH700R4, 4200 stall
Axle/Gears: 9", 4.33:1
My catback is an American Thunder one. I am not sure what series the muffler is but it is L O U D. Course, I do have a few other mods..........

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1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA
The Minnesota F-body Club

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1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA
The Minnesota F-body Club
<font face="Verdana, Arial" size="2">Originally posted by Trent257:
are the american thunders good?
</font>
are the american thunders good?
</font>
Bugs
1 chamber . "not for road use" that statment right there tells you how loud its going to be
but yes the 40 is the loudest "legal" muffler flowmaster makes.------------------
1988 Sport Coupe 305 TBI
K&N
Flowmaster 80
Daily driver:
1988 K1500 5.7 4x4 shortbed flowmaster cat-back gutted cat.
AIM: RyanNH84
[This message has been edited by NHcamaro (edited October 19, 2001).]
If you want loud, go with Loud Mouth by SLP
------------------
- David
88' GTA 5.7L TPI MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series
http://www.geocities.com/david_angel_16
------------------
- David
88' GTA 5.7L TPI MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series
http://www.geocities.com/david_angel_16
<font face="Verdana, Arial" size="2">Originally posted by CobraKiller:
Chambered mufflers are bad for performance from what I hear...But hey if you like it go for it. A 30 series would have to be the loudest then since it's a single chamber muffler. But I see most people running 40 series mufflers.
The 30 series are a lot quieter than the 40s, but the 30s are better for performance, according to flowmaster. Check their website, www.flowmastermufflers.com The 30s are supposed to be somewhat quiet but really deep sounding. I'm going with Borla or Hooker, though.
</font>
Chambered mufflers are bad for performance from what I hear...But hey if you like it go for it. A 30 series would have to be the loudest then since it's a single chamber muffler. But I see most people running 40 series mufflers.
The 30 series are a lot quieter than the 40s, but the 30s are better for performance, according to flowmaster. Check their website, www.flowmastermufflers.com The 30s are supposed to be somewhat quiet but really deep sounding. I'm going with Borla or Hooker, though.
</font>
Senior Member

Joined: Aug 1999
Posts: 618
Likes: 0
From: Central, NJ
Car: 1989 IROC-Z
Engine: 350 Vortech Supercharged ZZ4 TPI
Transmission: T56
Axle/Gears: 3.73
You say that "most people" run the 40 series. One what car, Mustangs? The 40 series does not fit a 3rd gen unless you completely ditch the factory exhaust routing. The 80 series is a crossflow which is what our cars use, the 40 series is not.
This muffler above, is the 40 series Flowmaster. That will not fit if you want the factory (OEM) exhaust routing... i.e. it is NOT A BOLT-ON. Notice: This muffler is not a crossflow style which 3rdgen's use. It is in one side, out the other.
This muffler above is an 80 series Flowmaster and is a bolt on for a thirdgen. This is the style (crossflow) muffler that all 3rd gen's use. Notice: This muffler sits sideways and the intermediate pipe goes into the one side and then the two pipes curve out of the outlets and sit under the bumper.
Yes, the 40 series is the loudest out of the 30,40,50,80 series, but will not fit a 3rdgen.
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1989 Chevrolet Camaro IROC-Z
L98 - 350c.i. TPI, rebuilt 700R4 auto w/shift kit, Dual catalyst Monza PaceSetter Cat-Back, SLP 1 5/8 Coated Headers, 3.23 Posi rear, Hypertech Thermomaster chip with 160stat, MSD 6A, March Under-Drive pulleys, AFPR, K&N's, !Air Box w/ Ram Air, moddified MAF, !TB Coolant, Spohn Dual Cat SubFrame Connectors, Alarm, Keyless entry, remote starter, 92 Z28 AeroWing, Brand New Paint (6/21/01)
Future: ZZ4 TPI w/EGR, T56, 3.42 or 3.73, Spohn strut tower brace and LCA's, Accell Universal 24# injectors
1989 Chevrolet Celebrity Eurosport <--DEAD AS OF 9/20/01
2.8 MPFI, no mods
225,000 miles and still ticking!
More info and pics on my webpage:http://go.to/iroc-z
AOL IMer: GPA 0point0
This muffler above, is the 40 series Flowmaster. That will not fit if you want the factory (OEM) exhaust routing... i.e. it is NOT A BOLT-ON. Notice: This muffler is not a crossflow style which 3rdgen's use. It is in one side, out the other.
This muffler above is an 80 series Flowmaster and is a bolt on for a thirdgen. This is the style (crossflow) muffler that all 3rd gen's use. Notice: This muffler sits sideways and the intermediate pipe goes into the one side and then the two pipes curve out of the outlets and sit under the bumper.
Yes, the 40 series is the loudest out of the 30,40,50,80 series, but will not fit a 3rdgen.
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1989 Chevrolet Camaro IROC-Z
L98 - 350c.i. TPI, rebuilt 700R4 auto w/shift kit, Dual catalyst Monza PaceSetter Cat-Back, SLP 1 5/8 Coated Headers, 3.23 Posi rear, Hypertech Thermomaster chip with 160stat, MSD 6A, March Under-Drive pulleys, AFPR, K&N's, !Air Box w/ Ram Air, moddified MAF, !TB Coolant, Spohn Dual Cat SubFrame Connectors, Alarm, Keyless entry, remote starter, 92 Z28 AeroWing, Brand New Paint (6/21/01)
Future: ZZ4 TPI w/EGR, T56, 3.42 or 3.73, Spohn strut tower brace and LCA's, Accell Universal 24# injectors
1989 Chevrolet Celebrity Eurosport <--DEAD AS OF 9/20/01
2.8 MPFI, no mods
225,000 miles and still ticking!
More info and pics on my webpage:http://go.to/iroc-z
AOL IMer: GPA 0point0
<font face="Verdana, Arial" size="2">Originally posted by breathment:
If you want loud, go with Loud Mouth by SLP
</font>
If you want loud, go with Loud Mouth by SLP
</font>
Is there anyway they can be put on 3rd gens?? If so, how??? I bet i'd be sweet..
-mike
yes, anything can be done with money, it fits easier with the dual cat set up i think, but iv seen it done before. just requires a little custom work
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- David
88' GTA 5.7L TPI MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series
http://www.geocities.com/david_angel_16
------------------
- David
88' GTA 5.7L TPI MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series
http://www.geocities.com/david_angel_16
Senior Member

Joined: Aug 1999
Posts: 618
Likes: 0
From: Central, NJ
Car: 1989 IROC-Z
Engine: 350 Vortech Supercharged ZZ4 TPI
Transmission: T56
Axle/Gears: 3.73
The SLP loudmouth doesn't fit, for it is for 4th gens.
However, you can buy the SLP Loudmouth resonator and get that put in and BANG! You now have an SLP Loudmouth.
However, you can buy the SLP Loudmouth resonator and get that put in and BANG! You now have an SLP Loudmouth.
The 30 series is not the one chamber muffler. The one chamber does not have a series number to it. In order of loudness they go like this Race Mufflers, 1 chamber, 40 series, 50 series, 30 series, 70 series.
The 80 series is a crossflow design that is about as loud as the 50 series. The 30 series is similar to the 50 series but the case is 1 inch thicker providing a slightly quiter deeper tone. The 30 series is also what comes with the Flowmaster force II systems for our cars, it is a single 3in in/out system. The american thunder system comes with an 80 series crossflow muffler. A single in/out muffler will flow better than crossflow style due to less turbulence inside the muffler.
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Black 89 IROC...355, Solid Crower Cam, TFS heads.
12.0 @ 120.3mph with a 1.9 60ft...all motor...no traction
The 80 series is a crossflow design that is about as loud as the 50 series. The 30 series is similar to the 50 series but the case is 1 inch thicker providing a slightly quiter deeper tone. The 30 series is also what comes with the Flowmaster force II systems for our cars, it is a single 3in in/out system. The american thunder system comes with an 80 series crossflow muffler. A single in/out muffler will flow better than crossflow style due to less turbulence inside the muffler.
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Black 89 IROC...355, Solid Crower Cam, TFS heads.
12.0 @ 120.3mph with a 1.9 60ft...all motor...no traction
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