GMMG...maybe
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Member
iTrader: (4)
Joined: Mar 2009
Posts: 399
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From: Gonzales, LA
Car: 85 Camaro Z28
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: 3.42
GMMG...maybe
Ok boys and girls.... I have been reading and reading and I am starting to lean towards the GMMG system which can be had right now new for $625 shipped.... Now, my question is.... is there anything out there that sounds meaner than this setup as its.... really sweet sounding....
My current set up is
85 Camaro Z28 with 89 350 TPI, headers, cat delete, mild cam.... currently have some jegs catback the PO put on it....It sounds ok, but I want a much louder and meaner idle and rev... I know I won't get the "dragster" sound with my current drivetrain, but I want to find an exhaust that can get me as close to it as possible....
My current set up is
85 Camaro Z28 with 89 350 TPI, headers, cat delete, mild cam.... currently have some jegs catback the PO put on it....It sounds ok, but I want a much louder and meaner idle and rev... I know I won't get the "dragster" sound with my current drivetrain, but I want to find an exhaust that can get me as close to it as possible....
Supreme Member

Joined: Dec 2004
Posts: 1,204
Likes: 0
From: chicago IL
Car: 91 formula
Engine: 350 tuned port. bolt ons
Transmission: 700r4
Axle/Gears: 3.73
Re: GMMG...maybe
Ok boys and girls.... I have been reading and reading and I am starting to lean towards the GMMG system which can be had right now new for $625 shipped.... Now, my question is.... is there anything out there that sounds meaner than this setup as its.... really sweet sounding....
My current set up is
85 Camaro Z28 with 89 350 TPI, headers, cat delete, mild cam.... currently have some jegs catback the PO put on it....It sounds ok, but I want a much louder and meaner idle and rev... I know I won't get the "dragster" sound with my current drivetrain, but I want to find an exhaust that can get me as close to it as possible....
My current set up is
85 Camaro Z28 with 89 350 TPI, headers, cat delete, mild cam.... currently have some jegs catback the PO put on it....It sounds ok, but I want a much louder and meaner idle and rev... I know I won't get the "dragster" sound with my current drivetrain, but I want to find an exhaust that can get me as close to it as possible....
Joined: Sep 2000
Posts: 2,499
Likes: 194
From: Moorpark, CA
Car: '91 GTA, '92 T/A Convertible
Engine: GTA: 350 w/Vortec heads, T/A: 305
Transmission: Pro-built 700R4
Axle/Gears: GTA: 3.27, T/A: 2.73
Thread Starter
Member
iTrader: (4)
Joined: Mar 2009
Posts: 399
Likes: 0
From: Gonzales, LA
Car: 85 Camaro Z28
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: 3.42
Re: GMMG...maybe
The company that builds the systems madhammer.com and byunspeed.com both have them for $625 shipped
Supreme Member

Joined: Sep 2005
Posts: 2,151
Likes: 0
From: Osceola Indiana
Car: 92 RS(sold) 1989 IROC-Z
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: ones that turn
Re: GMMG...maybe
Get the gmmg believe me you wont be dissapointed I love mine and couldn't be happier with it.
Senior Member
Joined: Feb 2011
Posts: 653
Likes: 5
From: Long Island, NY
Car: 87 Trans Am, 99 WS6, 16 Mustang GT
Engine: LB9, LS1
Transmission: 700R4, T56
Axle/Gears: 3.42 Posi, 4.10 Posi
Supreme Member
iTrader: (4)
Joined: Mar 2009
Posts: 3,079
Likes: 4
From: Pepperell, MA
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: GMMG...maybe
granted, their page is a bit basic, but mad hammer is the real deal. the gmmg is a great setup, would have been on my short list of catbacks if i hadnt gotten my magnaflow locally (craigslist) for a song...
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Joined: Oct 2006
Posts: 3,041
Likes: 8
From: West of Toronto
Car: 89 IROC
Engine: 305 TPI / ZZ4 cam
Transmission: Stage 2 700R4, LS1 driveshaft
Axle/Gears: Strange 3.42 w/ Auburn
Re: GMMG...maybe
Always wanted to try a GMMG.
When I get bored with my Borla I'll place an order.
When I get bored with my Borla I'll place an order.
Senior Member
Joined: Aug 2010
Posts: 680
Likes: 2
From: Lincoln, NE
Car: 86 Iroc-Z28
Engine: 5.3
Transmission: 4l60
Joined: Oct 2006
Posts: 3,041
Likes: 8
From: West of Toronto
Car: 89 IROC
Engine: 305 TPI / ZZ4 cam
Transmission: Stage 2 700R4, LS1 driveshaft
Axle/Gears: Strange 3.42 w/ Auburn
Re: GMMG...maybe
No video yet. Check the stickies for sound. Youtube has some nice 3rd gen borla vids.





