Mine went bad unexpected..(clogged).....$1000 plus to replace Original)
that would make for a good start

 

This is a problem for me, if cats are required on all new cars and you have to keep replacing them when they go bad(some of us), why do they cost so frigging much??

They are pretty simple and straight forward, is it the material used to transform the gases?

 

OE nukes you on price... there are better options in the aftermarket.

secondly, the metal is platinum. It's pricy stuff.

 

And you need to acknowledge that you are breaking the law... not just the letter, but the spirit.

 

Are we talking about a price from the dealer?

Aftermarket bolt-on cats for a '94 aren't anywhere
near $1G.

But you have a point about the perception that
replacement is prohibitive. That's part of why
the posts advocating retention of cats are valuable.
There are people out there who are inclined to stick
with cats if they felt these wouldn't break the bank.

These posts help let them know it is possible and
which brands to choose for the best price/performance
combo.

.

 

$1000 plus is for "MRSP" OE replacements.....that's not installation!! ..........to go with aftermarket I might as well
do the long tube headers while I'm at it..so replacing cats will cost.

 

Aftermarket bolt-on cats for the LT1 are about $250/ea. Not cheap, but not $1000.

Oh, and if the cats in your 94 died "unexpectedly" already it's because the car wasn't maintained properly. As with any other maintenance item, you pay in maintenance or you pay in repairs.

 

Brutal, simply brutal.

But since you mention springing for LT's, have we
got a deal for you !!!

Check out the stickies at the top of the C4 For Sale
section. There are deals on pipes from Stainless Works
and Exotic Muscle.

I know SW offers 1-5/8" header/cat combos for your car for
$1,149. I bought the SW's and am very pleased.

If you'd rather go for larger primaries, Exotic Muscle
offers something similar for coated 1-3/4 primaries.

.

 

Well I'll give you a reason, maybe not a good one, but mine, never the less. When you install long tube headers on a LT1 at the very least you have to relocate the cats. Now the logical place is off of the header collectors. But on a automatic this does not work out well. The clearance is close and all that heat is against the transmission. So at this point you have 2 choices. 1. use a kit like TPIS sells which is essentially a L98 version and uses a y pipe to run everything through a single converter. or 2. install bullet cats where the factory resonator is located. The problem with this is keeping them hot enough to work so far down stream. With this location mine passed but it is not an ideal location and honestly I can see why EPA would have a problem relocating them exspecially so far back.
Now, I have on my flame suit so fire away.

 

What you have stated, is the reason I do not go to LT's. I have an Auto and dont want to go through the hassle of trying to find a good spot for my cats. But, when my cats do finally give out, I am going to LT's w/Bullet cats.

 

No flameing, I know what you're saying. I have a '93 auto with EM longtubes, RT bullitt cats, and 3" B&B. The cats have to go behind the transmission, then the resonator, then the pipes and mufflers. Not an ideal location for cats, but I did barely pass the IM240. So it can be done, just a little more hassle and money.

 

Maybe so, but your not exactly in with the spirit of why the law was created. (smog problem)

 

what the **** do you think I have been writing about? The moon?

 

I don't have a clue as to where you have any right whatsoever to question the usage of my Vette, or why. At this point, I don't know whether to smack you or explain why.

But since I am a nice guy, I will explain.

1) I have participated in several Forum events, and have even organized a few.

2) I would love to attend more, but until recently, the expense of attending was more of a luxury then I care to admit.

3) I choose not to race, because it is my daily driver. I don't have the luxury of blowing it up and fixing it at the drop of a hat. Nor do I have the luxury of being without for an extended period of time.

4) I am sick and tired of people flaming me as I attempt to share my ideas and beliefs. Sure, clean heaters are a nice idea, and I agree it should be done (as I request the landlord to have done)... I pump gas at nite, it cuts down on smog. I recycle. For some reason, you seem to think I should be some ****ing tree hugger, I am NOT. All I want is for us to be adult about this and be responsable about what we can do to help our environment.

What I don't get, CC, is why you are so venomous towards me about this. If someone was asking about running over pedestrians, or killing their wives, or whatever, we would be morally aghast and outraged... but when it comes to removing or gutting cats, we have folks that think it's perfectly ok... and they don't seem to think that their actions are going to effect them, but for some ****ed up reason, only effect me.

The reason why the cat is so hated is 2 fold:

1) It was the poster child for lost performance of the 70s.

2) It's something that was forced upon us by the man.

as an extention of #2, many folks think that since big companies are allowed to pollute without control (which is not true) and that there are so many other sources of pollution (cow's don't count) they can pollute too... It's bull**** and you know it.

To repeat, I am not asking much... I am only hoping that some folks would search their souls and think about it a little (and many have!) before they gut or remove the cat.

Personally, I hate the smell of unmanaged exhaust and a poor tune... it gives me a head ache and causes my eyes to water. I was behind a vintage Olds today (cool, Starfire vert!) that was in very poor tune... all I could smell was a real fat exhaust. Hells bells, a simple tune up would have cleaned that stench up.

We could eliminate this odor from our streets and make our air that much better to breathe... to me it's a no brainer.

I will continue to tote at this windmill. I don't really care what people think of me, I just despise it when people don't think and feel their civil liberties are more important than our collective health and welfare.

It's not much different than drinking and driving. Sure, getting lit is fine... go for it... have done it myself many a time... and will do it again, but you shouldn't drive afterwards, cause you are risking others lives and health. I see emissions standards taking on the same type of draconian enforcement that DUI's have taken on. It's a matter of time, and if we are not responsible enough to keep our air clean, then we will be the death of our own hobby. How short sighted and stupid is that?

 

I gotta call this one. Everything I've seen Bogus post
has been along the vein of adding performance with a
view to minimizing the emissions consequences and
reducing contributions to smog.

Like him, I have trouble understanding why cats are
gutted or pulled when there isn't much benefit on
the performance front and the downside on the
emissions front is so substantial.

It seems like such an easy decision to forego a few
HP in favor of slowing the contamination of this
closed system we all share. Our specialty, low use
cars are a small part of a bigger problem but if we
can't get our heads around this little bit of it, what
chance is there for dealing with the bigger issue ?

Let's start in our own backyard and pay it forward.

.

 

Thats exactly what I was looking for.. Your too stubern to think that your 9.8 TONs of pollution per year (in stock form) greatly exceeds my 7.4 TONs of pollution. You drive a V8 daily.. I drive a V6 daily... 10k a year.. Understand?

Flame away, but i'm looking at the daily driven car.. not the car that only sees 3-4k a year.. sunday only car.. whatever.

If your going to be so critical of others maybe you should think about that.. (i've said that so many times here, but it ain't getting threw.... but think about it) Thats been my whole point... for the record I don't care what people drive as long as its not some huge **** SUV that gets 15 hwy.


For what its worth my LT1 went from a 13.6 to a 13.45 by just removing the cat and my old shop formans LS1 went from a 12.43 to a 12.33 by replacing the 2 cats with off road pipes. It will be a cold day in hell before I put cats back on my LT1 especially because I went from aug 04 to Sep 05 before I even needed a oil change in it. It doesn't spend enough time on the road to be a polluting factor. Also, considering I don't have a problem with non-catted cars performance tune passing emmissions even with cams around 220/230 duration I'm not quite sure how effective they are in the first place. Someone just sent me a testimonial (on our website already) about how his car passed with a tune, no cats, and a 383

 

Here's the problem, Bogus-

The original poster asked for dyno resutls, and you chose to hijack yet another thread and turn it in to one of your crusades. That's not selfish...And it happens everytime the word cat is mentioned here.

Then you threaten CC? What is that? When you make it known you have no problem berating people, you better be ready to get a load of it back and then some . Threatening people is BS, pick on someone your own size. There's a word used to describe people who try to intimidate people smaller than themselves, P#@#!
My apologies to the original poster and C4 gen for participating in this, but this just pizzes me off to no end.

Oh, and your motor probably blew from shimming up your guideplates with hardware store washers Mr. Guru.

 

Nah. Never mind.

 

Come on man 115,000 miles.....cats go and I did not maintain it properly
S***T HAPPENS!!!.....we are talking about vettes....You pay to play period!!!

 

Bogus, I care about the environment too, but I'm not about to try and reform everyone on a SPORTS CAR FORUM of all places. But if you insist on doing just that, there are more effective ways to change peoples minds. Read your first response to bluebomber, and tell me why you'd expect him to give you an ounce of consideration.

You said you weren't taking it personal, so I figured I could criticize your crusade, your apparent hypocrisy. But apparently you can't debate it without getting angry at me. How disappointing.