Question about cat-back size
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Senior Member
iTrader: (1)
Joined: Nov 2000
Posts: 930
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From: Albany, GA.
Car: 05 GTO, 88 GTA, 98 SS
Question about cat-back size
I saw in a different post where a guy said that the 2.25" Hooker Cat-Back is alot quieter than the 3". I have an RS so mine is going to need the 2.25. If I want to run the 3" instead, what should I do? I guess I'll have to get a bigger cat? Also I heard the American Thunder system is goes from 2.25 to 3" and enters the muffler as 3". Is this true? What would be the sound difference?
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91 RS
Black w/ red tweed
t-tops
bone stock for now
88 GTA
Red with grey cloth
K&N, TPIS Airfoil
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91 RS
Black w/ red tweed
t-tops
bone stock for now
88 GTA
Red with grey cloth
K&N, TPIS Airfoil
Member
Joined: Feb 2000
Posts: 313
Likes: 0
From: Columbus, Ohio, USA
Car: 88 IROC-Z (Sold)
Engine: 5.7L
Transmission: 700R4
You are right in saying that the American Thunder system goes from a 2.25 to 3". Actually it is only 2.25 for a short bit. Basically long enough for it to leave the cat and gradually increase in size. The cool thing is that the piece that has the change in it is seperate from the rest of the system meaning it could be changed out easily later for a full 3" system. I have the American Thunder cat-back on my car and it sounds awsome. It is kind of a low rumble at idle and lower rpm levels, but when you start to get to 2000+ rpm it really starts to howl. I think it is great.
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!
Matt
------------------
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!
Member
Joined: Jul 1999
Posts: 250
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From: marquette, Mi, 49855
I have a 3" cat back system on my TA, dont know if it will work on your rs. I love mine makes my 305sound like a big block.
My exhaust pictures http://sites.netscape.net/bulldogfrazier/exhaust
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http://sites.netscape.net/bulldogfrazier/homepage
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http://www.fracoinc.com/
Keep your ride shinning with pride
My exhaust pictures http://sites.netscape.net/bulldogfrazier/exhaust
------------------
http://sites.netscape.net/bulldogfrazier/homepage
+
http://www.fracoinc.com/
Keep your ride shinning with pride
TGO Supporter
Joined: Oct 2000
Posts: 1,231
Likes: 0
From: Wilmington NC
Car: C1500
Engine: 350
Transmission: 700r4
Axle/Gears: 2.73
I put the Hooker Super competition on mine, it's 3 inch and it bolts right up to an L03's
cat. I got mine from Jegs.com, just make sure you get the one that says not for HO. It should be about $270.
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1989 Pontiac Firebird Formula LO3 Auto
-180 degree stat
-Hooker Cat-Back
*****Possible summer '01 mods*****
Open Element, Auburn Posi, Keyless Entry, wonder Bar off the IROC, 4th gen seats, T/A tail lights
1985 Camaro IROC-Z LB9 Auto
http://www.geocities.com/krt80/
cat. I got mine from Jegs.com, just make sure you get the one that says not for HO. It should be about $270.
------------------
1989 Pontiac Firebird Formula LO3 Auto
-180 degree stat
-Hooker Cat-Back
*****Possible summer '01 mods*****
Open Element, Auburn Posi, Keyless Entry, wonder Bar off the IROC, 4th gen seats, T/A tail lights
1985 Camaro IROC-Z LB9 Auto
http://www.geocities.com/krt80/
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