Whats the Difference

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Oct 17, 2005 | 07:56 PM

3Z28'99

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Whats the Difference

Hello all !!! I was wondering what the deifference was between the LS2 intake maifold and the LS6 intake manifold? I purchased an LS2 intake and a F.A.S.T. 90mm TB for my 99 Z28 problem is that some other folks in another forum are telling me that I goofed up

Any info would be very helpful

Oct 17, 2005 | 08:08 PM

Redneck Z

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The LS6 is a much better intake and is a direct bolt on. You will need some extra parts to make the LS2 work, and you won't really make any gains to speak of.

Oct 17, 2005 | 08:11 PM

2K2WS6TA

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Some mag (Hot Rod I think) did a dyno test ls6 vs ls2 the only change was the intake, and the ls6 was the better performer, so sell the ls2 and get the ls6

Oct 17, 2005 | 08:15 PM

3Z28'99

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Is there an Ls6 manifold w/ a 90mm TB opening? And was the hp gain big?

Last edited by 3Z28'99; Oct 17, 2005 at 09:08 PM.

Oct 17, 2005 | 09:22 PM

Redneck Z

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The LS6 intake manifold will accommodate a 75mm TB. You don't need a 90mm TB, nor will it fit the LS6. A ported stock TB would be perfect.

Oct 17, 2005 | 09:32 PM

3Z28'99

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Im planning for bigger mods in the future, though a 90mm TB MAY be a tad over kill I wanted to be able to get all the air i could in the engine....BOOST!!!

But as far as a 90mm TB its FAST or Ls2?