Worth switching?

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Nov 24, 2010 | 10:22 PM

fuzzyjk

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From: Cape Cod

Worth switching?

5.3, L33, T60 on truck manifolds, 243 heads, 218 cam, LS1 intake.

Question: Is it worth switching out the LS1 intake to the LS6 I have sitting in the attic? Or should I sell it?

Last edited by fuzzyjk; Nov 26, 2010 at 08:16 PM.

Nov 26, 2010 | 08:19 PM

fuzzyjk

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From: Cape Cod

Anyone?

Nov 26, 2010 | 09:05 PM

CarsandWomen

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From: houston TX

prob not, id sell it. Forced induction kind of overrides the gains cuz you can just turn it up a little. If you bracket or class race then put it on, otherwise, take teh 300 bucks and move on.

Nov 27, 2010 | 02:05 AM

Orangemagic

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Quote:

Originally Posted by CarsandWomen

prob not, id sell it. Forced induction kind of overrides the gains cuz you can just turn it up a little. If you bracket or class race then put it on, otherwise, take teh 300 bucks and move on.

Same thoughts. Not really any gains to be had.

Nov 27, 2010 | 05:19 AM

Bob@BruteSpeed

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On an LS2/402 with AFR 225 heads and an ProCharger F-1A at the old shop, we swapped out an LS2 intake manifold for a FAST 92 and went from 809 rwhp to 864 rwhp with no other changes. Personally I would use the LS6 intake that you have sitting there. Bob

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Nov 27, 2010 | 01:30 PM

CarsandWomen

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From: houston TX

Bob is right, you will gain power by switching, maybe a lot maybe a little, but my point above is if your not trying to squeeze every last pony out of your setup then dont worry about it.

FWIW, FI applications tend to be a little more sensitive to stuff like intake changes, youll prob see it spool a little differently too

Nov 27, 2010 | 07:58 PM

Orangemagic

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Quote:

Originally Posted by Bob@BruteSpeed

Thats nice to know. I figured since it pressurized the whole system it never really changed much. Keep my mouth shut unless I know for sure

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Nov 27, 2010 | 10:46 PM

CarsandWomen

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From: houston TX

Quote:

Originally Posted by Orangemagic

Thats nice to know. I figured since it pressurized the whole system it never really changed much. Keep my mouth shut unless I know for sure

thats the funny thing about FI, you can make great power and put up great numbers with crappy parts. But when you upgrade those crappy parts to awesome parts a FI car will respond better than a NA setup. Intakes especially, and when your talking about turbos you will not only see spool change but power and track times.

case in point, buddy has a Grand Prix turbo. he was using the supercharger case as his intake manifold, it was gutted and empty. when he switched to an intake manifold from a NA Grand Prix he gained power, saw full spool about 500rpms sooner and his 60 foots got a hair quicker.