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What is needed to run an LS2 intake on a LS1 engine

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Old Apr 20, 2008 | 12:20 PM
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Default What is needed to run an LS2 intake on a LS1 engine

Started messing today and I noticed my LS1 throttle bracket won't work. What do I need? There is a hole in the intake around the area where the throttle bracket would be....what is the hole for? What do I need to use aftermarket fuel rails? I've heard of some O ring differances. Did I miss anything?
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Old Apr 20, 2008 | 12:54 PM
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I still dont understand. The LS1 intake has a hole in it? That would be for the egr tube. An LS2 intake wont have that on there so you would have to scrap the egr and get blockoff plates.

If you are going to put an LS2 intake on you need new coolant lines, new tb, gasket, and there are a few other things.

In my opinion just go with the ls6 intake if you havent bought the LS2 already. Less wok invloved.
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Old Apr 20, 2008 | 01:34 PM
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This is on a turbo setup. The ls1 intake has the egr hole in the center. The ls2 has a hole off to the passenger side...small hole maybe 3/8"
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Old Apr 21, 2008 | 08:35 PM
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Still curious how the throttle cable is hooked up on an LS2 intake.
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Old Apr 21, 2008 | 10:31 PM
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Its electronic im sure.
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Old Apr 21, 2008 | 10:36 PM
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You will need an aftermarket or custom fabbed bracket to mount your throttle cable. LS2's were never offered with manual TB's. The hole off to the passenger side of the intake is for your MAP sensor. You will have to buy and extension harness or extend the wires yourself.

Shane
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Old Apr 22, 2008 | 08:07 AM
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katech makes the harness extension as well as adapters for your ls2 fuel rails and injectors.
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Old Apr 22, 2008 | 08:20 AM
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Are there any gains acheived by this over a stock ls1 intake?
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Old Apr 22, 2008 | 08:36 AM
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yes, tho not as much as an ls6...unless your talking FI, in which case the ls2 is better due to the larger throttle opening. additionally, a ported ls2 outflows an out of the box fast 90 (and costs a lot less doing it).
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Old Apr 22, 2008 | 09:03 AM
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Who ports them for a good price?
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Old Apr 22, 2008 | 09:21 AM
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the holley throttle bodies come with a bracket.
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Old Apr 22, 2008 | 10:14 AM
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Originally Posted by sroach20
the holley throttle bodies come with a bracket.
+1...they're some of the best tbs out there actually.

ls2 portworks does a great job.
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Old Apr 22, 2008 | 09:43 PM
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I'm running a 3 bar Map so I'll just thread and plug the hole. Is the holley the only TB option there is for using a cable TB....other then fabbing up a bracket?
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Old Apr 25, 2008 | 01:19 AM
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slp makes a bolt on bracket to use a cable TB
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Old Apr 26, 2008 | 01:34 PM
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Yikes $70 for that bracket is highway robbery. This is a good thread. Looks like I'll change my plans from a NW to a holley tb.
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