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Muffler choice

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Old 11-20-2014, 11:43 AM
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Car: 1989 Trans Am GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.73
Muffler choice

Whats the best/nicest sounding muffler for 89 gta?
Old 11-20-2014, 12:22 PM
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Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: Muffler choice

BORLA. Magnaflow and Flowmaster sound good also. Summit even makes a great sounding one inlet- two outlet muffler to fit your car.

Last edited by dmccain; 11-20-2014 at 01:29 PM.
Old 11-20-2014, 08:03 PM
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Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: Muffler choice

I have a American Thunder Flowmaster 3in cat back including the exit pipes and tips that uses the 80 series . I love it, but it vibrates the photos on the inside wall of the house next to the car port when I pull in.

I finally had to use some mounting tape to keep them straight.

I don't think it's too loud but the thumping pressure coming from it is pretty strong.

You might want to consider getting a 3in cat back as opposed to just a muffler.
The larger pipe produces a better exhaust flow. It also creates a deeper tone.

At least mine is that way. I've heard Third Gen Camaros with stock 5.0s running just the muffler and there is a tone difference, especially with the 3in. exit pipes and tips I have.

.

Last edited by Ron U.S.M.C.; 11-20-2014 at 11:57 PM.
Old 11-20-2014, 08:48 PM
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Car: 1991 Camaro RS yellow
Engine: was '91 V6, now '89 5.7/355 TPI
Transmission: 4 speed automatic
Axle/Gears: Moser 3.73 with zexel posi
Re: Muffler choice

I agree with Ron, as that's the setup I have. But don't forget to ask your spouse; that preference counts, too.
Old 11-21-2014, 06:36 AM
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Car: 1988 Camaro IROC-Z
Engine: 5.7/350
Transmission: 700r4
Re: Muffler choice

I put in just the flowmaster 80 series muffler over a month ago and no complaints here. Sounds very nice on medium throttle and pretty loud under WOT and also crackles when i let off. Definitely worth the price in my opinion
Old 11-21-2014, 08:23 AM
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Car: 1989 formula
Engine: 350 l98
Transmission: 700R-4
Axle/Gears: 327
Re: Muffler choice

second the 80 series muffler had one for about two years and it seems to be getting louder in good way
Old 11-21-2014, 08:58 AM
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Car: 1985 firebird
Engine: 350 .40 over
Transmission: 5 speed borg(NWC), ram clutch
Axle/Gears: ROTATING MERCURY DRIVE.
Re: Muffler choice

spintech .. sportsman race series you wont regret it sounds great at any rpm
Old 11-22-2014, 09:51 PM
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Car: 88 5.7 Iroc, 2000 SS
Engine: Vortec Hot cam TPI/LS1
Transmission: Pro-Built/T-56
Re: Muffler choice

It really depends on what you like -quality tone, loud agressive?

Magaflow sound great, but are really mellow when anything less than half throttle. I have had a 40 series flowM and it sounded really agressive, total hot rod sound, turned heads. The Magna has a quality tone that I get complements on. The spintech, just sounds mean. and if you have a real motor in front of the spintech, the sound is really NASCAR,NHRA action.

For HP, & exhaust flow performance you can't beat the magnaflow race mufflers. and quiet off the throttle.
Old 11-22-2014, 10:20 PM
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Car: 1986 z28
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Re: Muffler choice

Hooker aerochambers sound great but iv not had good luck with build quality so be aware. Had a dynomax ultra flo before the hooker and it sounded great but was very quiet at idle and part throttle but screamed at wide open throttle.
Old 11-22-2014, 10:25 PM
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Car: 1985 firebird
Engine: 350 .40 over
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Re: Muffler choice

This is a picture of the two spintechs I have the bigger one came with my Mufflex 3.5 inch exhaust kit and it was good but I found out it is the more street version I think 6000 or something so I called up spintech and ordered up the sportsman series and it is mean sounding. At wot it sounds like no other exhaust on a Chevy motor.
Attached Thumbnails Muffler choice-img_20141027_171231_326.jpg  
Old 11-23-2014, 07:06 PM
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Car: 1986 Camaro
Engine: 355 tpi
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Re: Muffler choice

Originally Posted by z28yourstang
Hooker aerochambers sound great but iv not had good luck with build quality so be aware. Had a dynomax ultra flo before the hooker and it sounded great but was very quiet at idle and part throttle but screamed at wide open throttle.
I got the aerochamber as well. Loved it before I pulled the heads, cant wait to hear it again
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