IMCO Crossflow muffler?
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Joined: Apr 2004
Posts: 193
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From: G-Wood, SC
Car: 2 1988 GTAs
Engine: 5.0 and 5.7
Transmission: 700R4
Axle/Gears: 3.27 posi's in both
IMCO Crossflow muffler?
I just did a search on the Exhaust forum looking for some feedback on one of these and didn't see anything. I currently have the Flowmaster American Thunder 3" inlet and 3" outlet dual tailpipe setup on my '88 5.0 GTA. The muffler that came with the system is practically a 3 chamber 50 series. I went to an exhaust guy down the road from my house and told me that IMCO makes a 3" inlet dual 3" outlet crossflow thats basically a copy of the Flowmaster 80. Anyone have one or heard one before? I want to keep the system totally 3". Only way to do that with a normal 80 series is to have someone flare out the 2.5" outlets on an 80. Not to mention the Imco was about $60 cheaper installed than the flow.
Thread Starter
Member
Joined: Apr 2004
Posts: 193
Likes: 0
From: G-Wood, SC
Car: 2 1988 GTAs
Engine: 5.0 and 5.7
Transmission: 700R4
Axle/Gears: 3.27 posi's in both
Update. I had the muffler installed. This thing is the meanest sounding muffler I have ever heard on a 3rd gen. Its freakin nasty. If you guys want a good alternative and also very affordable muffler I highly recommend this thing. Its damn near an empty case compared to a Flowmaster 80.
Joined: Apr 2004
Posts: 3,001
Likes: 62
From: Salt Lake City, Utah
Car: 1988 camaro "SS"/ 1991 305/T5
Engine: 383 LT1 in progress/LT1TBI 355 soon
Transmission: Probuilt 700R4 3600 stall/ T5
Axle/Gears: Moser axles, 3.42 Eaton Posi
i`ve got an imco on my car and i think it sounds pretty mean.it`s been on the car since i bought it .my friends say they can hear me coming from a coulple blocks away and when you open it up the thing just screams.
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Joined: Jul 2002
Posts: 350
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From: Middle GA
Car: 87 IROC-Z
Engine: 355 carb'd
Transmission: 700R4
Axle/Gears: 3.73
I love the sound of the IMCO!! My boyfriend has it on his IROC and it's just soooooooooo awesome and sexy! I will be getting that on mine sometime towards the end of this year.
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Joined: Jun 2004
Posts: 295
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From: Michigan
Car: 1989 Formula
Engine: L98
Transmission: 700R4
Axle/Gears: 9 bolt GW6
soundclips? any1 have a web site or something so i can check them out? i dont like the way my 3inch american thunder sounds after my header install
Thread Starter
Member
Joined: Apr 2004
Posts: 193
Likes: 0
From: G-Wood, SC
Car: 2 1988 GTAs
Engine: 5.0 and 5.7
Transmission: 700R4
Axle/Gears: 3.27 posi's in both
If you go to www.grabthepower.com you can hear sound clips on different truck applications. Their soundclips suck compared to the real thing. I totally agree on the wide open remark. It sounds badass cruising but when you stomp on it man, it freakin roars. I had the 530831 that came with my american thunder system. It was OK but quiet compared to this thing. I was mistaken about the 3" outlet remark. It only comes 2.5" out but any good shop can blow the outlets out to 3" with no problem. I can put video on my PC but I don't know how to upload them for people to hear.
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Joined: Jun 2004
Posts: 295
Likes: 0
From: Michigan
Car: 1989 Formula
Engine: L98
Transmission: 700R4
Axle/Gears: 9 bolt GW6
yea my american thunder now just sounds weak after the header install...i donno mayb im crazy. did u just swap muffler? thx for the link
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Member
Joined: Apr 2004
Posts: 193
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From: G-Wood, SC
Car: 2 1988 GTAs
Engine: 5.0 and 5.7
Transmission: 700R4
Axle/Gears: 3.27 posi's in both
I kept the pipes. For what I paid for that system I was using the pipes. They have those nice mandrel bends and nice stainless steel tips so I just had the guy replace the muffler. Muffler is the exact same length and width but its quite a bit narrower with almost nothing on the inside but the big flow wing. I got out in it this morning and drove it about 30 miles down the back winding roads around my house just so I could get on it and enjoy the car. Sure feels like there is some more get up and go too.







