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CA exhaust ?'s

Old Dec 30, 2006 | 09:37 PM
  #21  
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Originally Posted by Formy

If your manifolds look like this, I just assumed that the cats would be right under the merge connectors.
93`s only have 1 cat and it is after the y pipe as i said before
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Old Dec 30, 2006 | 10:02 PM
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I just remembered seeing a pic of your headers.

The January issue of GMHTP has an article on a '94 Formula that they are working on. There is a pic of the PaceSetters on page 68. What is the difference between '93 and '94, if any?
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Old Dec 30, 2006 | 10:04 PM
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i dont know the difference.but the part numbers are different
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Old Dec 30, 2006 | 10:47 PM
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Well I'm still gonna call them shorties. Visually the stock manifolds and the PaceSetters look no different as far as there lengths are concerned. Mid lengths they are not.

Thanks for the exchange. It was cool to get some knowledge on the LT-1s. Maybe some day this state will get wise and drop these ridiculous smog laws so we can all run longtubes, with cats of course!!!

See ya out there bro!!!
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Old Dec 30, 2006 | 10:52 PM
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Originally Posted by Formy
Well I'm still gonna call them shorties. Visually the stock manifolds and the PaceSetters look no different as far as there lengths are concerned. Mid lengths they are not.
that is not true.just because you got shoties dosnt meen i did.mine are mids,they are the same length as the macs you posted
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Old Dec 30, 2006 | 11:11 PM
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the reason his are smog legal or CARB legal is because he is not relocating the cats with his becuase of the one cat therefore they are CARB legal on LT-1's as far as i understand!
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Old Dec 30, 2006 | 11:13 PM
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Originally Posted by camscam02
the reason his are smog legal or CARB legal is because he is not relocating the cats with his becuase of the one cat therefore they are CARB legal on LT-1's as far as i understand!
exactly,they didnt go to dual cats tell 95 i think
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Old Dec 30, 2006 | 11:20 PM
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ok thats why i was so confused then I remembered duh! they only have one cat! lol
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Old Dec 31, 2006 | 01:57 AM
  #29  
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Originally Posted by 93_z28
that is not true.just because you got shoties dosnt meen i did.mine are mids,they are the same length as the macs you posted
No. They are not. The Macs are a bit longer and hence are true mid length headers. Macs are not C.A.R.B. approved because they move the stock location of the cat. I am going to post the pics so you can see:

These are stock manifolds for your '93. Look "short" don't they?



MACS. They look longer



These are the PaceSetters that are in that issue of GMHTP, Jan. 2007. They are for a '94 but are the same for a '93:



These are my shorties which PaceSetter also claim are "mid length":



If you want to say that your headers are "mid length" you have every right. Just remember that your "mid lengths" are C.A.R.B. approved because they do not move the location of the cat. If they were to move any bit they would not get approved.

All I want to do is clarify.
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Old Dec 31, 2006 | 02:26 AM
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Originally Posted by Formy
No. They are not. The Macs are a bit longer and hence are true mid length headers. Macs are not C.A.R.B. approved because they move the stock location of the cat. I am going to post the pics so you can see:

These are stock manifolds for your '93. Look "short" don't they?



MACS. They look longer



These are the PaceSetters that are in that issue of GMHTP, Jan. 2007. They are for a '94 but are the same for a '93:



These are my shorties which PaceSetter also claim are "mid length":



If you want to say that your headers are "mid length" you have every right. Just remember that your "mid lengths" are C.A.R.B. approved because they do not move the location of the cat. If they were to move any bit they would not get approved.

All I want to do is clarify.
no,the mids i have are just as long as the macs.the part numbers are not the same for the 94 headers because THEY ARE NOT THE SAME PART.think what you want,but your wrong.i have the headers on my car and i know what they look like.


why are you showing me stock manifolds anyways?my headers are WAY longer then that.

i agree that your headers are shorties,but mine are longer then yours.mine are the same length as the macs

and i know they dont move the cat.the cat is after the y-pipe as ive told you 2 times already.


the part number for the 94 headrs you posted a pic of is "70-1335" the part number for the 93`s is 70-1338.they have a diferent part number because they are different headers.


next time you want to "clarify" you should get your facts straight.

Last edited by 93_z28; Dec 31, 2006 at 02:34 AM.
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Old Dec 31, 2006 | 03:32 AM
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So in a 93, can they run Longtubes? because the cat is after the Y pipe?
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Old Dec 31, 2006 | 03:34 AM
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Originally Posted by LSGunZ28
So in a 93, can they run Longtubes? because the cat is after the Y pipe?
no,long tubes arnt emissions legal so you wont pass the vissual
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Old Dec 31, 2006 | 11:49 AM
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..."no,the mids i have are just as long as the macs".


Last edited by Formy; Dec 31, 2006 at 11:56 AM.
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Old Dec 31, 2006 | 02:43 PM
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Originally Posted by Vette Killa
So I live in California and im lookin to go with LT headers and possibly a TD setup. Ive heard people say there is now way to pass smog if i have LT'S....Is this true? If so how hard would it be to put the stock exhaust back on?

Also I have been reading a lot about headers lately and I know that QTP or Kooks are most often the favorite, but how much of a difference is there between Pacesetter ceramic coated headers and say Kooks headers? It just seems like droppin a grand for some headers is a lil bit much

thanks for all the info
California is the most strict state as far as emissions. I lived there for over 12 years and have lots of experience with smog techs. You can find some shops that don't know any better and they will pass you even with long tubes as long as you pass the sniffer. There's no real way to determine beforehand unless you 'interview' the shop/tech who you want to do your car and ask them a bunch of questions. That way you'll get an indication of what they do and what they don't do etc. Theoretically if you don't pass at a place you can go to another place.

Technically anything that moves the cats is illegal (ie, longtubes). You will fail the visual if they know to look for it.

You really don't want to be installing and uninstalling headers, that will be a pain in the *** and take a long time every two years. Better to stick with one or the other and take your chances.

I know dumping a grand on headers is crazy. The difference is not in the performance (they are pretty much the same) the difference is in the material. Stainless or mild steel. Might want to research ebay headers (see the sticky) they are stainless and for much less money. Otherwise tried and trued Pacesetters are an excellent deal.
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