C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Are these cats too small?

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Old Nov 5, 2002 | 09:52 PM
  #1  
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Default Are these cats too small?

I need to put cats on my car. I want to put them by my tranny though. No more down the exhaust stream.

Specs:
360CID 5.9L
4500 POUNDS
MAXIUM EPA/CARB COVERAGE
Part No. Inlet/Outlet Config.
50003 1-3/4" No Air
50004 2"
50005 2-1/4"




I know I can cut the neck to make it a 3" opening. But I think this is pushing it. :confused:


Or these:
3" casing. Necks can also be cut off to 3"



[Modified by Raysur, 6:19 PM 11/5/2002]
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Old Nov 6, 2002 | 01:52 AM
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Default Re: Are these cats too small? (Raysur)

Raysur , I just had my Exotic Muscle lontubes installed with 3 " Car Sound High flow cats ($140 each from Speed Demon) and mated to my B&B catback with Xpipe. They fit very well and supposedly flow very well . Car pulls much harder! Cant wait to get it on the dyno and to the track. Sounds great in and out...... :seeya
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Old Nov 6, 2002 | 05:55 AM
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Default Re: Are these cats too small? (Raysur)

I have no experience here, but I had always heard that they produce to much heat next to the transmission on a auto equiped vette. Out of coursioty were you having trouble with the cats further down stream? I was thinking that you had posted once, that you had them located where the resinator used to be.
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Old Nov 6, 2002 | 10:10 AM
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Default Re: Are these cats too small? (Raysur)

Will this cat pass EPA?
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Old Nov 6, 2002 | 10:24 AM
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Default Re: Are these cats too small? (dppeaden)

Who makes the ones in the first picture? They look exactly like my stock '96's (except the pipe diameter is a bit small). I'd like to find out in case I need replacements in the future. Thanks.


[Modified by Dan Parker '96, 8:25 AM 11/6/2002]
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Old Nov 6, 2002 | 10:28 AM
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Default Re: Are these cats too small? (Raysur)

Raysur, are you sure those on top are not the pre cats from Car Sound, they sure look like them.......
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Old Nov 6, 2002 | 08:05 PM
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Default Re: Are these cats too small? (Shriker)

The tops are Car Sound cats. I don't want to go downstream because then I have the cut my exhaust system. I don't mind cutting the upper half but I don't want to touch anything else. Too much of a pain.

The top is EPA approved.


[Modified by Raysur, 4:09 PM 11/6/2002]
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Old Nov 7, 2002 | 09:28 PM
  #8  
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Default Re: Are these cats too small? (Raysur)

I found out they are too small. I'm going to get this:



So what i'm going to do is put flanges on my x pipe. And put flanges on this cat. The cat is good up to 460ci.:D So i'm have to tamper with my system.

I don't care if the pipes are only 2" each, this thing will rarely be on my car;).
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Old Nov 9, 2002 | 04:59 AM
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Default Re: Are these cats too small? (Raysur)

So are you going to locate that where the resantor sits?
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