4" For Fun
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From: East central, WI
Car: 89 Camaro RS
Engine: TURBO 94 LT1
Transmission: T-56 6 Speed
Axle/Gears: 10 bolt 4.10
4" For Fun
So I've been missing for quite a while on this board. (Married, kid, house, remodeling etc. )
I finally pulled the Camaro out of almost four years of storage and fixed all sorts of small things.
Then I felt with having the 70mm Turbo online it was time to ditch the Cobbled together exhaust I hade before for some 4"
The system is comprised od a few U / J bends, one straight piece, a left over diesel muffler, and a 3 - 4" adapter.
I figured I could throw it up here and just mention its really not too hard to make.

I finally pulled the Camaro out of almost four years of storage and fixed all sorts of small things.
Then I felt with having the 70mm Turbo online it was time to ditch the Cobbled together exhaust I hade before for some 4"
The system is comprised od a few U / J bends, one straight piece, a left over diesel muffler, and a 3 - 4" adapter.
I figured I could throw it up here and just mention its really not too hard to make.

Joined: May 2007
Posts: 2,340
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From: Montreal, Canada
Car: 1986 Chevrolet Camaro IROC-Z28
Engine: TPI 310ci (LB9)
Transmission: Custom Rebuilt 700R4 - 2600 Stall
Axle/Gears: 10 bolt, 3.73 Eaton Limited-Slip
Re: 4" For Fun
That 4" actually is probably lighter than the old one.
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Junior Member
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Joined: Nov 2006
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From: East central, WI
Car: 89 Camaro RS
Engine: TURBO 94 LT1
Transmission: T-56 6 Speed
Axle/Gears: 10 bolt 4.10
Joined: Nov 2007
Posts: 845
Likes: 4
From: Salt Lake
Car: 1989 IROC & ROLL-Z
Engine: L98 Vortec FIRST TPI
Transmission: T56, Mech Speedo
Axle/Gears: G92 J65 3.27
Re: 4" For Fun
So you welded that on the floor and somehow managed to snake it over the axle in the car? If so I'm impressed.
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From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: 4" For Fun
it looks like there is a slip fit connection where it kicks up in front of the axle
Thread Starter
Junior Member
iTrader: (1)
Joined: Nov 2006
Posts: 69
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From: East central, WI
Car: 89 Camaro RS
Engine: TURBO 94 LT1
Transmission: T-56 6 Speed
Axle/Gears: 10 bolt 4.10
Thread Starter
Junior Member
iTrader: (1)
Joined: Nov 2006
Posts: 69
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From: East central, WI
Car: 89 Camaro RS
Engine: TURBO 94 LT1
Transmission: T-56 6 Speed
Axle/Gears: 10 bolt 4.10
Re: 4" For Fun
I'll try this weekend. Its actually pretty quiet due to the turbo.
Your the third person to ask me that. If I get a few more maybe I'll make a weekend out of it and build a few systems.
Dirt cheap of course compared to mufflex
Your the third person to ask me that. If I get a few more maybe I'll make a weekend out of it and build a few systems.
Dirt cheap of course compared to mufflex
Joined: Nov 2007
Posts: 845
Likes: 4
From: Salt Lake
Car: 1989 IROC & ROLL-Z
Engine: L98 Vortec FIRST TPI
Transmission: T56, Mech Speedo
Axle/Gears: G92 J65 3.27
Re: 4" For Fun
Where did you acquire your tubing? Approximate cost?
Thanks
Thanks
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From: Huntley, Il
Car: 92 GTA
Engine: 350
Transmission: A-4
Re: 4" For Fun
Awesome, I will have to bring it next spring. The car is currently in the process of an LS swap.
Joined: Sep 2003
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From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: 4" For Fun
Hawks makes a 4" catback you can adapt to a thirdgen. No muffler, over axle and dumped..and 400$ for it
Thread Starter
Junior Member
iTrader: (1)
Joined: Nov 2006
Posts: 69
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From: East central, WI
Car: 89 Camaro RS
Engine: TURBO 94 LT1
Transmission: T-56 6 Speed
Axle/Gears: 10 bolt 4.10
Re: 4" For Fun
Also interested in a setup if you decide to make a few. Ive got a 454 single turbo that right now kicks out behind the front tire. Ive got some a long straight piece already so I would really only need the bit from just past the straight to the back + a very quiet muffler.
If its prices around a couple hundred for just that I'd be a buyer ASAP.
If its prices around a couple hundred for just that I'd be a buyer ASAP.
Re: 4" For Fun
http://item.mobileweb.ebay.com/viewi...d=380527342884
For the OP, this may be a good kit to start with then modify for the third gens on the cheap. I just ordered one to see how much modding it'll need. I'll keep you informed.
For the OP, this may be a good kit to start with then modify for the third gens on the cheap. I just ordered one to see how much modding it'll need. I'll keep you informed.
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Organized Drag Racing and Autocross
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Mar 3, 2016 05:19 PM








looks good 

