Will 4th gen exhaust fit on my car?? please help
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Joined: Nov 2005
Posts: 213
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From: KC MO
Car: 90 iroc
Engine: 305 tpi
Transmission: 700R4
Will 4th gen exhaust fit on my car?? please help
Hey all, I was wondering if the cat-back section from a stock 2000 Z28 will fit on my 1990 IROC? Thanks alot
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
SEARCH! 
Yes it fits under the car and over the axle, but it will not directly bolt up to your catalytic converter. You will need a muffler shop to make up an adapter.
Yes it fits under the car and over the axle, but it will not directly bolt up to your catalytic converter. You will need a muffler shop to make up an adapter.
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Joined: Jul 1999
Posts: 12,212
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Not quite...
The LS1 car back systems aren't a direct fit like the LT1 cat back systems. I believe the LS1 cat is in a different location, far enough to keep the system from being an easy bolt on. MY 87 GTA has a LS1 cat back, but it cost more to have it modified to fit, than the system even cost to begin with!
The LS1 car back systems aren't a direct fit like the LT1 cat back systems. I believe the LS1 cat is in a different location, far enough to keep the system from being an easy bolt on. MY 87 GTA has a LS1 cat back, but it cost more to have it modified to fit, than the system even cost to begin with!
Last edited by Stephen; Feb 1, 2007 at 05:14 PM.
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