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Old Mar 25, 2007 | 12:29 AM
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Does anyone have any info. regarding the gains of going to a 1 7/8" header from a 1 3/4" header on a 402 with L92's??? Just curious of the swap would be worth the $$$$$$$$.
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Old Mar 25, 2007 | 11:32 AM
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Don't I feel the love. Anyone have any info. on this ???
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Old Mar 25, 2007 | 12:02 PM
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i dont think your gonna find many people who's switched from 1 3/4 to 1 7/8 as most will go 1 7/8 from the start on the l92 setups. and the other fact that this setup is still new. honestly id say the 1 7/8 w/ ls7 style (d port) flanges and big collectors from kooks or american racing should show you considerable gains over a traditional ls1 1 3/4 header. but would love to see a dyno comparison for sure. good luck
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Old Mar 25, 2007 | 01:51 PM
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Stick with your 1 3/4". No reason to spend more money on switching and when there is no solid proof of gains.
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Old Mar 25, 2007 | 02:10 PM
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I appreciate the responses, I would like to see the gains as well. I just don't want to spend another 1K on new headers when the set I bought is less than 2 months old. I guess I'll wait to see if anyone else does this and makes alot more HP.
Thanks!
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Old Mar 26, 2007 | 08:23 PM
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How does a regular ls1 header work on the l92 head? Doesn't the l92 have a D port for the exhaust like the ls7? Would think just going to the D port header would be a gain let a lone the 1 7/8.

Nick
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Old Mar 26, 2007 | 11:38 PM
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It is my understanding that the ls1 headers are big enough to cover the D shaped exhaust port. If the header circumfrance is bigger than the exhaust port, should shape matter?
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Old Apr 13, 2007 | 11:55 AM
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what are the best headers for Max HP, ground clearance and price. i wanna spend under a 1G. should i get mids. full length?
my car is lowered and have magnaflow cats with flowmaster catback. not really sure if im gonna do any internal engine work as of yet.
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Old Apr 15, 2007 | 01:27 AM
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plz help..
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Old Apr 15, 2007 | 01:36 AM
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Long Tube Kooks will fit the bill...but a setup with Y-pipe will be somewhat over $1000.
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Old Apr 15, 2007 | 07:28 AM
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Originally Posted by MarylandSpeed
Long Tube Kooks will fit the bill...but a setup with Y-pipe will be somewhat over $1000.
Hey MarylandSpeed,

Welcome to LS1Tech.....those Jethots I bought from ya last year are holding up fine.

...sorry for the hijack.

R/

Frat
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Old Apr 26, 2007 | 02:06 PM
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Great question. I am wondering the same thing. Would Hooker 1 7/8 header's fit the L92 port design with out any flow/power problems?

... I've searched and this was the only thread I could find.
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