LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Diff between lt1 & ls1 catbacks

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Old Jan 27, 2004 | 07:26 PM
  #1  
polcat1p's Avatar
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Diff between lt1 & ls1 catbacks

Is the only diff. between the 2 catbacks, the over the axle pipe, or is the other differences?
Thanks Chad
Old Jan 27, 2004 | 07:39 PM
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I believe the only difference is the intermediate pipe. It is a slip fit very similar to the 95-97 dual cat cat backs. You will need an "s pipe" to hook it up. something like this. The two alumanized 90 degree mandrel bends. I bought the mandrel U from jegs for ~ 20 bucks i think.

If you got a 95-97 you could buy a stainless works s pipe through summit. Maybe it would work with a lil modification on the LS1 catback, but wait for someone else to confirm that.

Can somone else confirm that the intermediate pipe is the only difference, i'm 99% sure thats it.

-brent
Old Jan 27, 2004 | 08:06 PM
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polcat1p's Avatar
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The reason i'm asking is there is a ls1 exhaust i might be interested in, but it does not come with the over the axle pipe. I was wondering if i could just buy a single cat pipe to fit into the muffler. It is for a 94z.
Old Jan 27, 2004 | 08:15 PM
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94formula do you know the part number for that u bent pipe you got?
Old Jan 27, 2004 | 10:18 PM
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289-42323

http://www.jegs.com/cgi-bin/ncommerc...27&prmenbr=361

-brent
Old Jan 28, 2004 | 06:43 AM
  #6  
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From: Point Pleasant, NJ... USA
I believe there is also a slight difference in the rear hangers[one of them ]
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