thier website doesnt tell me much about american thunder someone mentioned it being just as loud as a 40 series.. is this true?.........if it isnt.......then what is the loudest? american thunder?.....40 series?.....80 series?.....help......buying exhaust as soon as i get a couple answers....

 

i believe that the American Thunder is 40s. they say American Thunder is the loudest System they have and the 40s is the loudest muffler they have. so i believe the American Thunder Cat-back system comes with the 40s muffler. but if you want the look of duel exhaust get the 80s. its just a tiny bit quieter then 40s but comes with duel outlet.
I bought the Hooker Cat-back from www.jegs.com and im getting it in 2-3days and people say it sounds very good and it has a duel outlet Aero Chamber Muffler
Hope this helps.

RED82TA5.7L

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1982 Pontiac Trans Am
Cross-Fire Injected 5.7l V8
Eldebrock Headers, 1 stupid Glasspack right after the cat and dumps out before the rear axle.
Mods: 1.6 Proform Roller Rockers, electric fan.

Future mods: X-Ram( Aftermarket Cross-Fire Injection Manifold that proves to have as much power as TPI www.x-ram.com )
Cross-Fire Injection after market chip that says that it will proform like 90's injections.. http://www.turbocity.com/CorvetteCro...ECMUpgrade.htm
Hooker Cat-back system

 

I just had my american thunder cat back put on, and its not near as loud as i thought it would be. I have slp, going to a catco cat and its all three inch from the collecter back. The main reason that i went with the american thunder is because i wanted the look off the dual outlets with three inch in, three inch out.

i have heard they get louder with time, but i just dont know. And once in a while it sould really metallicy. but over all the quality and installation of the system was very good. the guy who put it son did an awesome job and was an awesome guy, not like most mechanics, that i have had experience with. I'll have pics as soon as i scan the pics

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1986 Trans Am
305 TPI
"If it's not one thing, it's another!"
http://www2.hanover.edu/hierlmeier

 

I have the American Thunder system on my 88 ROC. I used to just have an 80 series muffler, but switched to the cat-back this summer. I definitely like it better. First of all, the look of having to 3" chromed pipes coming straight out the back is awsome. Second, the sound inside the car does not seem to be very loud, but if you hear it driving down the road it is much louder. I don't know why, but my friend drove mine for me and it sounded sweet. I did the install myself. It was pretty straight forward and once the old system was off, it went on very quick. I'll never get anything else.

Matt

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irocet@hotmail.com

drive.to/Stang_Kilr

88 IROC-Z -- 350 L-98, 700R4, Flowmaster, K&N, MAF Sceens Gone, Airfoil, March Pullies, Comp Cams Magnum 1.6 Roller Rockers, Accel U-Groove Plugs, Accel 8.8 mm Wires, Hypertech Cap & Coil, Hypertech Chip, Hotchkis Strut Tower Brace, One Loud Stereo!

 

I think my 40 series single in/out muffler must be twice as loud now as it was when I bought it in August 99. Louder, deeper, meaner, and no longer metallic sounding. The single in/out muffler is the only way to go -preferably with the exhaust pipe tucked under the bumper cover so the sound resonates off of the street.

Tips are for pickup trucks and riceboys.


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91 Trans Am WS6
Bright White
5.0 TPI auto
Flowmaster 3" 2 chamber catback
Trans Go shiftkit
2000 stall converter

supposed 'peanut cammed' car (yeah, right)

Built on Wednesday

[This message has been edited by MrJ (edited November 01, 2000).]