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

Long tubes for '94??

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Old Jan 25, 2005 | 10:01 PM
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Default Long tubes for '94??

Alright, I've been searching this site for more info for us later C4 guys who want long tubes, but no one sells specifically for later C4s because of emission reasons. I know that hooker sells the 2149 and 2151 for the older C4, but what kind of retrofit would it take to get these headers to work for a '94. I'm assuming 02 bungs would need to be welded and the EGR tube removed...please, someone point me in the right direction!
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Old Jan 26, 2005 | 12:46 AM
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check exotic muscle and TPiS.
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Old Jan 26, 2005 | 12:57 AM
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Exotic Muscle and TPiS sell sets specifically for you, EM is supposed to be the best.
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Old Jan 26, 2005 | 01:24 AM
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If you have $1400.00 for coated!
I paid it .
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Old Jan 26, 2005 | 01:48 AM
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Exotic Muscle...

www.exoticmuscle.com
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Old Jan 26, 2005 | 04:12 AM
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Not to hijack your thread, but I've always wondered why headers are readily available for 84-91 but hardly any for 92-96. There is every bit as much demand for them and the air inj. pipes are way simpler for the LT1s and should therefore mabey cheaper. But this never seems to be the case for some reason...
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Old Jan 26, 2005 | 06:29 AM
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Originally Posted by MaxLean
Not to hijack your thread, but I've always wondered why headers are readily available for 84-91 but hardly any for 92-96. There is every bit as much demand for them and the air inj. pipes are way simpler for the LT1s and should therefore mabey cheaper. But this never seems to be the case for some reason...

The reason is the 92-96 have to use a non stock cats and relocate them. For this reason, the only truely legal headers for LT1-LT4 are shortys.
This being said, they will pass emissions inspection with the sniffer but would not pass a visual inspection if the inspector wants to get picky. At least in some localities.
They carry no CARB cert. due to this.
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Old Jan 26, 2005 | 08:23 AM
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Originally Posted by 93 ragtop
The reason is the 92-96 have to use a non stock cats and relocate them. For this reason, the only truely legal headers for LT1-LT4 are shortys.
This being said, they will pass emissions inspection with the sniffer but would not pass a visual inspection if the inspector wants to get picky. At least in some localities.
They carry no CARB cert. due to this.
That is 100% correct.
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Old Jan 26, 2005 | 12:35 PM
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Originally Posted by 93 ragtop
The reason is the 92-96 have to use a non stock cats and relocate them. For this reason, the only truely legal headers for LT1-LT4 are shortys.
This being said, they will pass emissions inspection with the sniffer but would not pass a visual inspection if the inspector wants to get picky. At least in some localities.
They carry no CARB cert. due to this.
That may be true, but the long tubes for 84-91 are not legal either, at least in California, even though they retain the stock cat location. Therefore since they both aren't leagal and there is certainly a market for the 92-96, I'm still confused.
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Old Jan 26, 2005 | 12:42 PM
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Originally Posted by MaxLean
That may be true, but the long tubes for 84-91 are not legal either, at least in California, even though they retain the stock cat location. Therefore since they both aren't leagal and there is certainly a market for the 92-96, I'm still confused.

Kalifornia is the land of the emissions Communists....You should move or hope it becomes its own Country soon. This is particularly crazy b/c haveing longtube headers themselves do not effect a damn thing with clean air as long as you still have your cats in place.

The L98 LT header is legal just about everywhere else.
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Old Jan 26, 2005 | 12:59 PM
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Originally Posted by Perfusion
Exotic Muscle...

www.exoticmuscle.com
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Old Jan 26, 2005 | 01:10 PM
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Originally Posted by MaxLean
That may be true, but the long tubes for 84-91 are not legal either, at least in California, even though they retain the stock cat location. Therefore since they both aren't leagal and there is certainly a market for the 92-96, I'm still confused.

But they are 49 state legal just like the y pipes that eliminate the 2 front per-cats on the L98. That is legal in 49 states, just not california.
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Old Jan 26, 2005 | 05:58 PM
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I haven't checked out EM, but when I called TPiS, they told me that they only sell shorties and mid-lenght. I'm looking for the "full up" longtubes, and getting rid of my power robbing cats. So, are EM still better, and if so, what's the worth in paying double the cost of Hookers...? They should all be equal lenght, mandrel bent, etc...right? Thanks for the good info so far!
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Old Jan 26, 2005 | 06:24 PM
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Get uncoated and I can ceramic coat any set of LTs for only $188!!!!
this includes coating inside and out, all preping of materials, 3 yr labor warranty, and a lifetime limited rust warranty!


This should save you alot of $
and even if you get stainless get them ceramic coated
stainless is not rust proof just rust resitant!
thanks alot
your firend
Sean Blanton
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let me know!
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Old Jan 26, 2005 | 07:42 PM
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Originally Posted by VictorRussell'92
Kalifornia is the land of the emissions Communists....You should move or hope it becomes its own Country soon. This is particularly crazy b/c haveing longtube headers themselves do not effect a damn thing with clean air as long as you still have your cats in place.

The L98 LT header is legal just about everywhere else.
Actually that's not entirely true. Headers disipate alot of heat that would otherwise make it to the cat. End result, the cats take longer to "light off" if they even will at all. That's one of the reasons it is so difficult for aftermarket manufactures to get long tubes CARB certified. But the point still remains there are no long tubes that are technically emissions legal, yet they produce the early ones all the time.
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Old Jan 26, 2005 | 08:21 PM
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I was looking on EM's website and was wondering how much hp diff there would be between the 1 3/4" and the 1 7/8" pn#C1180, C1181. Because the 1 3/4" is $425.95 and the 1 7/8 is $1350. Besides the size and coating, is there any other difference I don't see. I'm assuming they are both tuned length. Why is there such a price difference? Is is it the material bec. there is another 1 3/4" header that is SS and it is around $800.

EM

Last edited by JA94vette; Jan 26, 2005 at 08:23 PM.
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Old Jan 26, 2005 | 08:51 PM
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1 7/8" headers are just too big for a 350, you wouldnt need those unless you had over 400ci. Your low-end torque will drop significantly if you go to 1 7/8".

1 5/8" or 1.75" headers are all you would need on a 350.
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To Long tubes for '94??

Old Jan 26, 2005 | 09:57 PM
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So you can get LTs for LT1's for around $650 coated. I was hearing $1000+. Thanks guys.
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Old Jan 26, 2005 | 10:02 PM
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good luck!
your friend
Sean
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for all your coating needs!
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Old Jan 26, 2005 | 10:37 PM
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Originally Posted by JA94vette
So you can get LTs for LT1's for around $650 coated. I was hearing $1000+. Thanks guys.
WHERE??
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