Exhaust Upgrade
Thread Starter
Junior Member
Joined: Apr 2022
Posts: 9
Likes: 1
From: Lethbridge Alberta
Car: 1989 Camaro IROC Z
Engine: 350 5.7 TPI
Transmission: Automatic
Exhaust Upgrade
Just recently did a full exhaust upgrade on my 89 IROC Z
350 5.7
350 5.7
- New Hooker 2055HKR Headers with ypipe
- 3’ pipe
- splitter to dual Flowmaster Outlaw Racing Series mufflers
- Dual chrome tips
Supreme Member
Joined: Oct 2004
Posts: 4,528
Likes: 240
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: Exhaust Upgrade
Looks good, how loud is it, Looks like it would be very loud with a ton of resonance.
Joined: Sep 2005
Posts: 27,918
Likes: 2,448
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Exhaust Upgrade
Crush bends... 
Brutal. That one in the I-pipe looks like it shuts down to about half the pipe diameter.
Looks reasonable other than that.
Brutal. That one in the I-pipe looks like it shuts down to about half the pipe diameter.Looks reasonable other than that.
Joined: Mar 2014
Posts: 4,553
Likes: 806
From: South Ms
Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: Exhaust Upgrade
I like that setup. Had a similar setup with 2 mufflers on an 82 and it sounded great
Senior Member
Joined: Dec 2004
Posts: 570
Likes: 69
From: TEXAS
Car: 1987 IROC-Z
Engine: 6.2L
Transmission: Stage III T56
Axle/Gears: 3.73
Re: Exhaust Upgrade
I'd love to hear this thing. If you could, post a youtube video of your exhaust and if there's mods to the 5.7L I'm curious to know them
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