Im confused about my exhaust
Thread Starter
Moderator




Joined: Jul 2001
Posts: 5,225
Likes: 70
From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Im confused about my exhaust
Heres the page
http://www.jegs.com/cgi-bin/ncommerc...963&prmenbr=76
Heres what I got (Was on car when I got it )
389-43083 1986-99 Camaro/Firebird: 80 Series, 3''In/2.5 Dual Out - 80 Series
Now is this JUST the muffler? Or is it a cat back?
Is that the American Thunder? Im confused.
Thanks guys!
------------------
1988 Jet Black IROC
5.7L W/ 64000 miles
Flowmaster Exhaust
Fully Loaded
------------------
My IROC In Readers Rides
My IROC
http://www.jegs.com/cgi-bin/ncommerc...963&prmenbr=76
Heres what I got (Was on car when I got it )
389-43083 1986-99 Camaro/Firebird: 80 Series, 3''In/2.5 Dual Out - 80 Series
Now is this JUST the muffler? Or is it a cat back?

Is that the American Thunder? Im confused.
Thanks guys!
------------------
1988 Jet Black IROC
5.7L W/ 64000 miles
Flowmaster Exhaust
Fully Loaded
------------------
My IROC In Readers Rides
My IROC
Joined: Jul 2000
Posts: 7,386
Likes: 1
From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
Thats just the muffler.
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89 RS
STILL Looking For:
An 87 IROC-Z28 350 TPI
------------------
89 RS
STILL Looking For:
An 87 IROC-Z28 350 TPI
Thread Starter
Moderator




Joined: Jul 2001
Posts: 5,225
Likes: 70
From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
Ok thanks guys
- I figured it was just the muffler.
Question #2. Whats a cat back? 3 inch pipe from cat to muffler? I have a 3 inch pipe from cat to muffler. So maybe I do have a cat back?
------------------
1988 Jet Black IROC
5.7L W/ 64000 miles
Flowmaster Exhaust
Fully Loaded
------------------
My IROC In Readers Rides
My IROC
[This message has been edited by IROCThe5.7L (edited October 16, 2001).]
- I figured it was just the muffler.Question #2. Whats a cat back? 3 inch pipe from cat to muffler? I have a 3 inch pipe from cat to muffler. So maybe I do have a cat back?
------------------
1988 Jet Black IROC
5.7L W/ 64000 miles
Flowmaster Exhaust
Fully Loaded
------------------
My IROC In Readers Rides
My IROC
[This message has been edited by IROCThe5.7L (edited October 16, 2001).]
Supreme Member
Joined: Mar 2001
Posts: 1,818
Likes: 0
From: Dixon, IL
Car: RS
Engine: 305
Transmission: 4L60
Axle/Gears: 3.42
If I'm not mistaken all 5.7s came with 3" over the axle piping, standard bents though. if It is madrel bending it is after market.
------------------
late model 91 rs, fully loaded, auto, t-tops, red leather, paint- gm red and yellow blend (light red), custom painted 16" Camaro rims
305 tbi flat base 14"x3" with K&N, hypertech chip, accel super stock plug wires, only use full synthetic oil and delco filter, 2 1/2" cat delete pipe, Edelbrock 3" cat-back
MTX sub and amp, Bose all around
vic_v8@yahoo.com
street kills: New v-6 stang, 96 v6 camaro, totally killed '86 SC Camaro (305), 91 z 28 with 305
15.854@87.57 (I think I could have it 15.5 with good tires and two more runs)
next month: rest of ultimate tbi
------------------
late model 91 rs, fully loaded, auto, t-tops, red leather, paint- gm red and yellow blend (light red), custom painted 16" Camaro rims
305 tbi flat base 14"x3" with K&N, hypertech chip, accel super stock plug wires, only use full synthetic oil and delco filter, 2 1/2" cat delete pipe, Edelbrock 3" cat-back
MTX sub and amp, Bose all around
vic_v8@yahoo.com
street kills: New v-6 stang, 96 v6 camaro, totally killed '86 SC Camaro (305), 91 z 28 with 305
15.854@87.57 (I think I could have it 15.5 with good tires and two more runs)
next month: rest of ultimate tbi
Thread Starter
Moderator




Joined: Jul 2001
Posts: 5,225
Likes: 70
From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
<font face="Verdana, Arial" size="2">Originally posted by Tas:
largest factory is 2.75" not 3"
</font>
largest factory is 2.75" not 3"
</font>
So I have a catback

------------------
1988 Jet Black IROC
5.7L W/ 64000 miles
Flowmaster Exhaust
Fully Loaded
------------------
My IROC In Readers Rides
My IROC
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