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

Will LT1 headers fit on a L98?

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Old 03-23-2007, 08:31 AM
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Kool88vette
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Default Will LT1 headers fit on a L98?

Can I install shorty headers that are made to fit a LT1 on a L98? It's got the ZZ4 heads with angled plugs.

Last edited by Kool88vette; 03-23-2007 at 09:07 AM.
Old 03-23-2007, 11:39 AM
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DeBaGo
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Why shorties? There's really no performance gain to be had at all. If you want cheap hedman headers on summitracing are $150 for a set. They're at least full length headers.
Old 03-23-2007, 12:06 PM
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They will bolt to the heads, yes.
Old 03-23-2007, 12:25 PM
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OK, My next question is: The shortie headers that I ordered have a carb #. I assume that if I install them on my 88 they will be legal in California. I would like to get a set of Long Tube headers but I will never get past the smog police. I guess I will need to have an exhaust pro custom make my front Y pipe. Should I do a H pipe before the high flow cat? The exhaust will be 2 1/2 inch all the way to the race mufflers. I plan to have them Jet Hot coated. I think this is the best I can do and still be legal here in California. here they are http://www.pacesetterexhaust.com/corvette.php They are at the bottom of the page. Think it will work?

Last edited by Kool88vette; 03-23-2007 at 01:00 PM.
Old 03-23-2007, 02:46 PM
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Originally Posted by vader86
They will bolt to the heads, yes.
Any clearance issues? What about the smog crap. Are they the same on both headers?

Last edited by Kool88vette; 03-23-2007 at 02:52 PM.
Old 03-23-2007, 03:11 PM
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Z06_BluByU
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Originally Posted by DeBaGo
Why shorties? There's really no performance gain to be had at all. If you want cheap hedman headers on summitracing are $150 for a set. They're at least full length headers.
link??
Old 03-23-2007, 03:18 PM
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BADDUCK
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Originally Posted by Kool88vette
OK, My next question is: The shortie headers that I ordered have a carb #. I assume that if I install them on my 88 they will be legal in California. I would like to get a set of Long Tube headers but I will never get past the smog police. I guess I will need to have an exhaust pro custom make my front Y pipe. Should I do a H pipe before the high flow cat? The exhaust will be 2 1/2 inch all the way to the race mufflers. I plan to have them Jet Hot coated. I think this is the best I can do and still be legal here in California. here they are http://www.pacesetterexhaust.com/corvette.php They are at the bottom of the page. Think it will work?
Do you mean a "H" pipe in the front Y pipe?
Old 03-23-2007, 03:46 PM
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Originally Posted by BADDUCK
Do you mean a "H" pipe in the front Y pipe?
Yeah, Or a crossover pipe. Lingenfelter suggested it in his book on building chevy small blocks. He claims it will increase torque. I just want to maximize my exhaust but keep it California legal. I have seen pics on this forum that show the insides of a stock L98 header. They are very restrictive. My exhaust is 2 1/2 inch mandrel bent with a high flow cat and Magnaflow race muffler. I need to open it up from the headers to the cat. I think I can free up a few HP.

Last edited by Kool88vette; 03-23-2007 at 03:50 PM.
Old 03-23-2007, 06:02 PM
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I know an "H" or balance tube is supposed to even out exhaust flow in a true dual system. I just have never seen that in a front "Y" pipe that is going into a commen pipe (the main CAT) very soon anyway. Interesting, but I don't see how it will increase horsepower.
Old 03-23-2007, 06:28 PM
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Originally Posted by 383_BluByU
link??
http://store.summitracing.com/partde...5&autoview=sku

a CF member had some in the forsale section for 120

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