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Old 02-15-2009, 09:56 PM
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Default ? about intake manifold

Should I either port and polish the ls6 intake manifold or get the FAST 90 or 92 setup?!? How much power gains over the stock ls6 intake manifold to a P&P ls6?!?
Old 02-15-2009, 10:24 PM
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i dont think that porting the ls6 is worth any gains. and i believe fast doesnt shine till over 6000K rpms.
Old 02-15-2009, 10:50 PM
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what else is done to the car?
Old 02-15-2009, 11:11 PM
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Depends on your mods and what you plan on doing with the car. More info please
Old 02-15-2009, 11:58 PM
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i also had the same question...mods in the sig... i don't really know what direction to go. i hear bad things about ls2 manifolds and bad things about the fast 90. i understand there will always be some bad sides but what is the best route to go??? and how much would i have to change if i do upgrade my manifold????
Old 02-16-2009, 06:34 AM
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jury is still out on the advantages of the FAST on a non-cam engine.

cam only it will benefit you though.
Old 02-16-2009, 06:15 PM
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I have built/forged 347, MTI clear lid w/K&N filter, P&P TB, MS3 cam, LS6 intake manifold, Kooks L/T 1 7/8" X 3" headers, Kooks 3' Y-pipe, Borla stinger muffs, and G-Force tune.
Old 02-16-2009, 07:47 PM
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you ask the kind of question you originally asked....but it doesn't strike you as important to include the information that you have THAT built of a motor.

nice



as for the intake....you'll benefit

check out my results from this past weekend
Old 02-19-2009, 09:03 PM
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^^^^lol..thanks man




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