LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Where to put the Cats???

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Old 02-11-2006, 11:25 AM
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Default Where to put the Cats???

After looking at my ORY, there is no room on the driver's side to fit a cat with lines and such right up super close to the piping. On the passenger's side their is all the room in the world. Therefore I figured I would buy one cat and have it welded in right after the Y on the I pipe but I heard that it will restrict the car quite a bit. For some reason my pics arent uploading to photobucket otherwise I could show it better. So what do I do and what cats do I use to do it????
Old 02-11-2006, 11:29 AM
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If it's an ORY, then there's no room for cats. Are you planning to cut the ORY for the cats?
Old 02-11-2006, 11:47 AM
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The correct answer is... nowhere
Old 02-11-2006, 11:51 AM
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Look at the LS1 cars
Old 02-11-2006, 07:33 PM
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Originally Posted by y2k_ta
If it's an ORY, then there's no room for cats. Are you planning to cut the ORY for the cats?
Yes
BTW: I responce to another post..I have no choice I have to have cats on there.
Old 02-11-2006, 08:38 PM
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You can get away with the single cat but I need to do the dual cats for sure. The passenger side is easy but the driver's side is gonna be real tight and might have to move the fuel/brake lines.
Old 02-12-2006, 05:10 PM
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Heres some pics for ya showing the cats and the lines being routed out of the heat. The cats are similar to the Pypes ones.





Old 02-15-2006, 02:49 PM
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To the Top; I still cant decide what to do. I hate to restrict the airflow greatly or run into problems with not having the cat heat up if I put it right after the Y. What do I do??? My dad is drilling me to find a solution and fast...
Old 02-15-2006, 02:51 PM
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just put them right after the collectors.


sounds like you should of got shorty headers
Old 02-15-2006, 07:04 PM
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[QUOTE=StealthFormula]To the Top; I still cant decide what to do. [QUOTE]

Can you not see the pictures above that I gave you??????????? Your answer is right there.
Old 02-15-2006, 07:27 PM
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[QUOTE=flame][QUOTE=StealthFormula]To the Top; I still cant decide what to do.

Can you not see the pictures above that I gave you??????????? Your answer is right there.
Thats exactly what I want to do but my Y-Pipe is definetly higher up closer to the body than yours which is my problem. Is it hard to re-route those lines? and hwo do you do it? I suppose if I can re-route those lines I should just have enough clearance maybe to put 2 cats on the y-pipe just like your setup there.
Old 02-15-2006, 07:56 PM
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throw them in the trash
Old 02-16-2006, 11:49 AM
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[QUOTE=StealthFormula][QUOTE=flame]
Originally Posted by StealthFormula
To the Top; I still cant decide what to do.
Thats exactly what I want to do but my Y-Pipe is definetly higher up closer to the body than yours which is my problem. Is it hard to re-route those lines? and hwo do you do it? I suppose if I can re-route those lines I should just have enough clearance maybe to put 2 cats on the y-pipe just like your setup there.
How do you figure your pipe is higher up?? Those are pacesetter headers and y-pipe same as yours. The y-pipe is 3" diameter and the cats are 4" so thats only 1/2" up and 1/2" down more than the ORY. The lines I bent without even disconnecting them just make sure you don't kink them.
Old 02-16-2006, 01:02 PM
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Just from looking at your pictures, your driver's side portion of the y-pipe has an easy 1" more clearance than mine and I don't have a cat in there yet. So maybe you got an earlier version of their y-pipe that had more clearance or you bent it yourself but my y-pipe is actually just touching the torque arm. I like the way you have yours set up but I don't think I have room and he probably doesn't either. And I really didn't want to move the fuel lines. But I may just put in new lines to solve the problem.
Old 02-17-2006, 05:51 PM
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I got mine January last year. I'm sure alot of it is just installation. There's quite a bit of movement with the two piece design.



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