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GXP intake mani(you ever seen this?)



Yes im pretty sure its also works....either way either of them are better than ls4 stock one

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Looks to me as if you would lose power if you swapped to this. I'm betting that whoever had this made was planning on feeding it with a turbo.
 


Well the ls4 intake is restrictive to an extent. From what I gather after it goes thru the TB it gets smaller. I can't remember how.much smaller but I've seen an ls6 and ls4 side by side and how much smaller it gets is stupid

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JTeske88 said:
Hacking up a fast intake has been an idea but, I don't wanna ruin it lol
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you wont heres the link for the fast install FAST102 LSXr and Nick Williams 102mm Throttle Body Install - LS1TECH
GTPpower said:
It's more of the design, not which has a bigger TB opening.
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The TB neck is the problem for us it almost cuts down 30% to snake around the opsu. this is the biggest restriction, and why its pointless to port the manifold leaving this piece intact.
4THGENCAMAROFAN said:
Yes it's been done but took a little bit of modding and looked kind of tacky IMO. Not really a way around it though
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why tacky? all the other LS manifolds besides the truck are cleaner on top unless you saw somebody with LS4 rails rigged to work with the Ls1/6 Intake.
 
^^^^ that was what I thought about the TB but I didn't wanna argue cause I didn't have hard facts just pics and threads I've read

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Truthfully for the price of a FAST intake it's not really worth it. A FAST is what? like a grand for a new one. You can get an LS6 for less than half that. I'd get an LS6 and put the rest of the money toward headers, or a cam...or both.
 
depends on the mods i mean these manifolds pull power everywhere on modified engines. If you have heads and cam plus supporting mods a ls6 intake wont come in the same range as a fast will
 
91parkave said:
The TB neck is the problem for us it almost cuts down 30% to snake around the opsu. this is the biggest restriction, and why its pointless to port the manifold leaving this piece intact.
Click to expand...

I'm talking about switching to the manifold included in the link...
 
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