dual cats catback????
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Joined: Mar 2008
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From: Keizer, OR/FT.Lewis, WA
Car: 91 Z28
Engine: 5.7 tpi
Transmission: t-5
Axle/Gears: limited slip 3.42
dual cats catback????
does anyone know if any catback exhausts were made for the dual cat setup? ive tried looking around but everything is single cat if so who makes it and whats your opinion on it. thanks
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Joined: Oct 2000
Posts: 378
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From: colorado springs
Car: 1991 Z-28
Engine: 350
Transmission: TH700
Re: dual cats catback????
Edelbrock makes one but there is cutting and welding involved. flowmaster makes one #17150. I had dual cats and it was a pain to prevent exhaust leaks. I decided to convert to a single 3" cat for more options. I didn't notice any loss of performance.
Joined: Apr 2006
Posts: 1,534
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From: Jacksonville, NC
Car: 92 Camaro
Engine: Dart SHP 406 HSR, LE heads
Transmission: Performabuilt Level 2, Vig 3200
Axle/Gears: S60 373
Re: dual cats catback????
If an exhaust shop is decent, they can convert it using something such as a flowmaster Y pipe (similar to mufflex's y pipe but ALOT cheaper)
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Junior Member
Joined: Mar 2008
Posts: 29
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From: Keizer, OR/FT.Lewis, WA
Car: 91 Z28
Engine: 5.7 tpi
Transmission: t-5
Axle/Gears: limited slip 3.42
Re: dual cats catback????
ok thanks guys so you think i should just convert to single 3 in. all the way back
Joined: Jul 1999
Posts: 10,950
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: dual cats catback????
The only difference in cat-backs is at the front where it connects to the y-pipe. Any good muffler shop can make that connection for you. You can use any cat-back designed for a thirdgen or a fourthgen.
Keep the dual cat setup, 2 pipes are better than one.
Keep the dual cat setup, 2 pipes are better than one.
Thread Starter
Junior Member
Joined: Mar 2008
Posts: 29
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From: Keizer, OR/FT.Lewis, WA
Car: 91 Z28
Engine: 5.7 tpi
Transmission: t-5
Axle/Gears: limited slip 3.42
Re: dual cats catback????
haha i thought about getting rid of the cats but it is my DD so i cant really and plus im in the military and the cops on post hate loud cars. it already has a cat back system on it from when i purchased it off a guy but its a no name and i dont really like the setup. another thought was just to put in hifh flow cats and just change the axle back cuz well this muffler doenst sound to great. ill try to get a sound clip soon if possible.
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Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
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From: Gardnerville, Nv.
Car: 00 Camaro SS
Engine: 5.7
Transmission: 6 speed
Re: dual cats catback????
I have the Flowmaster dual catback system on mine. Kevin is right, any catback,single cat or not will work and any exhaust shop can mate it up. Leave the cats on, it doesn't really rob any power, it helps the environment and it won't put out those nasty exhaust fumes that make your eye's/nose burn.
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From: Joplin, Missouri
Car: '91 Z28
Engine: L98 H/C/I - 400whp
Transmission: T56
Axle/Gears: Moser 12-Bolt(4:30 w/spool)
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