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Custom Intake

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Old Sep 5, 2008 | 01:45 PM
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Default Custom Intake

Who is running a Custom built Intake on their LSX Engine..

I'm looking into this idea since there isn't a really big aftermarket for the L92/LS3 Heads, and they have a ton of potential.

I was thinking of building something like a LT1 Style Intake, but with longer Runners..kind of a cross of a Victor Jr. but with a Plenum on it where the Air will come in and where the Throttle Body can bolt to, and make it to where I can still run my Fuel Injection.
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Old Sep 5, 2008 | 02:14 PM
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I wish I could say that I did, but my fabrication skill are limited at best. Keep us posted if you do decide to build one.
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Old Sep 5, 2008 | 04:46 PM
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I'm thinkin about it.. the L92 Heads can produce some power.. the problem is that the L76 Intake can't supply anything past 6500 max..so it's literally like a brick wall.

I'm thinking that my idea will help out alot, just looking for some feedback from anyone here..
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Old Sep 5, 2008 | 05:11 PM
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I found this.. this is pretty much close to what I want to get at..

http://www.precision-metalcraft.com/Manifolds.html
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Old Sep 5, 2008 | 05:49 PM
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Well after talking to the guys that produce this Intake, I got some numbers.

For the roughly $3K investment, it is a 15hp gain up to 7000RPM's, and some loss of torque down low.

I think I'll stick with the L76 and wait for the Weiand Street Warrior for that price.. the numbers on that are more promising.
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Old Sep 5, 2008 | 07:52 PM
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Damn, That Intake sure does look good though!
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Old Sep 5, 2008 | 10:36 PM
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IMHO with the shorter runners that will be a higher rpm intake. Unless it is used on a big inch motor.
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Old Sep 5, 2008 | 10:37 PM
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damn i need that intake!!!
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Old Sep 6, 2008 | 07:09 AM
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Originally Posted by 1989GTA
IMHO with the shorter runners that will be a higher rpm intake. Unless it is used on a big inch motor.
I want one for my 402..I guess I've hit the wall for what I have since an Aftermarket Intake won't gain that substantially.
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Old Sep 6, 2008 | 07:19 AM
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Bech makes them for most any application, from 90mm to 115mm TB's and we sell them as a package with TB & fuel rails all for under $3k.

Low profile to fit under a stock C6 Z06 hood:


And the standard config:
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Old Sep 8, 2008 | 10:03 PM
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I was in the same boat but I have some fabrication skills so I made my own.















My car runs great, but I have a mail order tune that I have not had tested on a dyno or track. I have no idea what the timing is either. I'm planning on going to test and tune on Wednesday though. Cam is a Patrick G grind mid 220s/high 230s ~.600 lift. It feels pretty soft below 5 grand but I can't say if that's from the intake or the tune.

I would have modified a carb intake if I didn't have the capacity to build this one. Cost was minimal aside from the $400 Nick Williams TB.
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Old Sep 9, 2008 | 12:35 PM
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Nice job!!

Originally Posted by Hotrod406
I was in the same boat but I have some fabrication skills so I made my own.















My car runs great, but I have a mail order tune that I have not had tested on a dyno or track. I have no idea what the timing is either. I'm planning on going to test and tune on Wednesday though. Cam is a Patrick G grind mid 220s/high 230s ~.600 lift. It feels pretty soft below 5 grand but I can't say if that's from the intake or the tune.

I would have modified a carb intake if I didn't have the capacity to build this one. Cost was minimal aside from the $400 Nick Williams TB.
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