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best LS2 intake manifold??

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Old Nov 17, 2005 | 03:15 PM
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Default best LS2 intake manifold??

I searched and could not find a definite answer, if such a thing exists. For a mild-cammed (or stock) LS2, how to manifolds compare?

I've ready the LS2 intake actually flows worse than the LS6. Also, I know the FAST intake is an option.

bottom line, is it worth the trouble of porting the LS2 intake, or switching to the LS6 intake, or buying the FAST. If you port, what part do you port???

Thanks
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Old Nov 17, 2005 | 03:27 PM
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see link

https://ls1tech.com/forums/dynamometer-results-comparisons/405063-ls2-vs-fast-90-dyno-comparison.html
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Old Nov 19, 2005 | 07:08 PM
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no help???? I had already read the thread above, but they weren't very specific about what exactly they ported.
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Old Nov 19, 2005 | 08:58 PM
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Talk to LT1 dave in that post, i do belive he is the only one who has taken one apart and ported.
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Old Nov 20, 2005 | 05:59 AM
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Dave,
I tried all 3 as you may remember. The LS2 was a dud. The Fast/LS2 was fine, well the manifold is kinda a pain, but in the end no more dyno power so back to LS6/Shaner. Seeing more non results with Fast/90 on non agressive cammed stock disp motors. A&A claims the Fast is better on a LS2, if you are talking about your C6, but is it better than LS6?
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Old Nov 20, 2005 | 06:02 AM
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Will the LS2 TB work with the LS6 intake??? I used to have several LS6 intakes lyeing around, but think they are all gone. I know I have an early LS1 intake that I may try for fittment purposes..

See5: thanks, I knew someone had posted about this, but couldn't track it down.
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Old Nov 20, 2005 | 11:57 AM
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[QUOTE=Dave F]Will the LS2 TB work with the LS6 intake??? I used to have several LS6 intakes lyeing around, but think they are all gone. I know I have an early LS1 intake that I may try for fittment purposes..QUOTE]


no they wont 78mm vs 90mm also different mounting positions for fuel rails and different injector spacing.
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