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80 series flowmaster

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Old Jan 24, 2009 | 03:10 PM
  #1  
91_GTA305's Avatar
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From: Alice, Tx
Car: 1991 Trans Am
Engine: sb chevy's.
Transmission: 700R4
Axle/Gears: 2.73
80 series flowmaster

how does the flowmaster sound on a 305? does it help much if you redo the whole piping to 3 inch and make it true duals. What about hp. gains? Does anyone have video clips of their thirdgen with a 80's series.
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Old Jan 30, 2009 | 03:46 PM
  #2  
David 91RS/Z28's Avatar
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From: Baton Rouge, LA USA
Re: 80 series flowmaster

I'd stay away from flowmaster. The design just doesn't work with an F-body designed system. I can't tell you how many times I've seen swaps from Flows to something else and there's always a gain. Look at the Hooker catback systems. They work awesome, sound sweet, and are priced decent.
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Old Jan 31, 2009 | 01:40 AM
  #3  
IROCThe5.7L's Avatar
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From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Re: 80 series flowmaster

If your 305 isn't heavily modded, go with what you think sounds the best. It's not going to make a difference HP wise if you go with a Flowmaster or Aerochamber. Pick which system sounds the best to you, and be happy.
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Old Jan 31, 2009 | 01:45 AM
  #4  
travishenry's Avatar
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From: Elverta, California
Car: 1988 Z28 Camaro
Engine: TPI 350
Transmission: TH350
Axle/Gears: 3.73 10 bolt
Re: 80 series flowmaster

I had 80 series on my car and like they said no hp gain from it. but it sound sweet. I put my muffler where the cat goes and ran the exhaust out the side right infront of the rear wheels. Looked and sounded great. But no hp gain.
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Old Jan 31, 2009 | 02:43 AM
  #5  
BlueIroc-Z's Avatar
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From: WA
Car: 1989 Camaro Iroc-Z
Engine: 305 TPI (LB9)
Transmission: 700R4
Axle/Gears: 2.77 posi
Re: 80 series flowmaster

I have a flowmaster 80 on my 305 Camaro. It is a single 3" cat back, dual 3" outs on the muffler. Y-pipe is stock and I am running a standard catalytic converter.

It has a nice sound to it. Nice low tone, fairly quiet at idle. Compared to my dad's Camaro which has a 350 (low compression truck motor w/tpi on top), mine is only a little bit quieter. His has the same setup except it has 2.5" tips.

On another note, when I first bought mine, it had no catalytic. And, it sounded more aggressive than it does now. Definitely a noticeable difference in sound when we brought it home after getting the cat installed.

Here's a link to the sticky with a bunch of sound clips.
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Old Jan 31, 2009 | 05:31 PM
  #6  
IROCZTWENTYGR8's Avatar
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From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
Re: 80 series flowmaster

Search youtube for exhaust sounds, go with what you like, the muffler won't make or break your car. True duals will be expensive and aren't necessary.
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Old Jan 31, 2009 | 07:46 PM
  #7  
FueledSoul's Avatar
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From: Minnesota
Car: 84 camaro, 88 trans am, 98 camaro
Engine: Modded , stock, LSX modded
Transmission: 700r4, 700r4, t-56
Axle/Gears: 327, 308, 373
Re: 80 series flowmaster

sounds like crap
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Old Jan 31, 2009 | 07:50 PM
  #8  
SiCkRs's Avatar
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From: Norwalk, CA
Car: 91Z28
Engine: 5.7 ls1
Transmission: 4l60e
Axle/Gears: 3.42
Re: 80 series flowmaster

I have american thunder on my 350 tpi it sounds awsome
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