LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Lt1 Intakes

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Old Jan 21, 2004 | 09:47 AM
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Default Lt1 Intakes

Do any of you know of any other intakes that are a valiable for our cars. I have to take mine off to fix an intake leak that destroyed my summer. So i am going to destroy that intake . Im looking for somthing that will work good with my gtp heads and vortech blower. Thanks for any advice.
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Old Jan 21, 2004 | 12:03 PM
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Originally Posted by 96SCTA
Do any of you know of any other intakes that are a valiable for our cars. I have to take mine off to fix an intake leak that destroyed my summer. So i am going to destroy that intake . Im looking for somthing that will work good with my gtp heads and vortech blower. Thanks for any advice.
They're aren't any LT1 aftermarket intakes. You can have a custom manifold done but since you have a blower its really pointless (according to what you have described). The same needs for naturally aspirated are not the same for forced induction.
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Old Jan 21, 2004 | 12:36 PM
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exactly...
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Old Jan 21, 2004 | 01:56 PM
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96SCTA, where in Rochester are you located? THe stock LT1 intake is about your only option unless you want to dump $1200 into a single plane that wont really benefit you at your level. The LT1 intake is fine for forced induction applications.

I have a few LT1 intakes if the one you have is warped or something.
Jason
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Old Jan 21, 2004 | 08:00 PM
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the LT1 intake flows great, no need to change it, even for forced induction.
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Old Jan 21, 2004 | 09:43 PM
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Gangly, I wouldnt say they flow great In FI, they are fine.....moderate to extreme NA applications can benefit greatly from "other" style manifolds. They ARE a restriction after a while for NA cars.

Jason
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Old Jan 22, 2004 | 08:46 AM
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Originally Posted by JasonShort
Gangly, I wouldnt say they flow great In FI, they are fine.....moderate to extreme NA applications can benefit greatly from "other" style manifolds. They ARE a restriction after a while for NA cars.

Jason
Yes sir...there are quite a few good examples out there now too showing the gains switching to the single plane style intakes or the like. The LT1 lacks plenum volume and don't even get me started on runner length. I'm going to run the doms with a stock intake and then switch to a single plane style later to see just what kind of gains can be had with an "extreme" setup.
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Old Jan 22, 2004 | 09:45 AM
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I live about 20 minutes from rochester, About 2 minutes from the leicester speed way.

So you all prety much agree i dont need to change my intake. I just noticed that the ports dont line up to well with my gtp heads. The intake ports are smaller. Also the intake gasketes seem to block just a little bit of the passage. Is there another type of gasket i can use. Like the lt4 gaskets. Are they any differnt. And if i may trouble you all with yet another question. How the hell do you guys seal your intakes. I use a think beed of sealent and let it almost set up where it is starting to get firm but it is still tacky. Then i place the intake on it.
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Old Jan 22, 2004 | 06:22 PM
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Well, that is definatly a huge contributing factor to the performance decrease. That needs to be matched. When you say intake ports being smaller....do you mean on the heads or the intake manifold? If the intake port on the head is smaller than the port on the intake....that is big problems in the power department. I have seen 5-7mph losses in the 1/4 on NA motors with that garbage.

Gotta get those ports lined up properly....both with the port dimension and height.
Leichester.....one of my favorite dragstrips! We are very fortunate to have such a good track (IMO) local to us.

Jason
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Old Jan 23, 2004 | 11:58 AM
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Why not just buy a LT4 intake, they're not expensive, and most likely line up better w/ your heads. If not port match it.
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Old Jan 23, 2004 | 12:53 PM
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LT4 inbtake is angled differently and will not bolt up directly to LT1 casting heads. As for the LT1 intake performance, i firmly believe that is flows extremely well(ported) on any street car and on most drag cars as long as it isnt an extreme setup. Like Bobby said though, the only drawback I see or think about on occasion is the short runner length when building a high rpm race motor.
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Old Jan 23, 2004 | 01:31 PM
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im not reallly concerned about the ports. THE big problem is that the gasket seems to block some of the passage way. The hEADS HAVE BIGGER PORTS THEN THE INTAKE. Are there any other gaskets i can use. And any one have any special way to seal the intake. Thanks

Micah
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Old Jan 24, 2004 | 10:22 AM
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For your application I think that the LT1 intake is your best bet. I don't think you'd see the benefit from a single plane manifold with the combo you have.
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