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Thread: lsx 78 intake
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12-31-2006, 02:00 PM #1
lsx 78 intake
im thinkin about gettin it ..not worried about the price .. just want to see if anyone else has one and if it really made a 15 horse diff , i already have headers slp cai and will be gettin a cam so will this intake be perfect and my car is silver so i think it will reflect th color of th car well in aparence wise
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12-31-2006, 03:24 PM #2
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Mystic Teal- 99 Trans Am & 01 CBR 929
if your not worried about price why not go for the FAST 90/90 combo??
anyways yes it will make a difference and yes it is worth it. anyway to flow more air when getting a cam is really worth it
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12-31-2006, 08:02 PM #3
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01-01-2007, 03:51 AM #4
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black, 05 Roush- black, 99 T/A WS.6
Not to hijack a thread but what is the price difference between the 78mm and 90mm intakes?
1999 T/A WS6 Black -------SOLD
05 mustang Roush sport;
DOB manifold, m122 SC, 47lb injectors, gt500 TB, roush TVS CAI, Detroit rocker SC grind camshafts, Mac LTs, off road x, roush off road mufflers, roush short throw shifter, kenne bell BAP, Brenspeed 93 octane tune. 479rwhp 436ftlbs SAE.
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01-01-2007, 03:41 PM #5
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Mystic Teal- 99 Trans Am & 01 CBR 929
roughly 100$ on ebay
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01-01-2007, 03:44 PM #6
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Mystic Teal- 99 Trans Am & 01 CBR 929
oh and the throttle bodys are about the same price.. so your looking at only 100$ more for a much better setup...
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01-01-2007, 04:23 PM #7
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Mag Red- 2002 Vette
Ported, the FAST 78 will make about 5 - 10 hp less than the 90. You need a new throttle body for the 90 so add that to the cost.
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01-01-2007, 04:28 PM #8
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01-02-2007, 03:41 AM #9
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black, 05 Roush- black, 99 T/A WS.6
is there 78mm tb much better than a ported stocker?
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01-02-2007, 08:06 AM #10
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Mag Red- 2002 Vette
I had Mark Shaner port mine, did a beautiful job.
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01-02-2007, 10:31 AM #11
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black, 05 Roush- black, 99 T/A WS.6
I currently have a ported tb also and was curious how much better a fast 78mm would be if at all I would think it would have minimal gains on a ported stocker.
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01-02-2007, 10:50 AM #12
i was wantin the 78 cause i really didnt want a $400 tb when my stock one is ported and will bolt up to the 78 lsx
ive seen where the 78 lsx out flows the ls6 manifold and looks cool.... i think i will take the extra $400 from gettin the 90/90 and get the underdrive pully
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01-03-2007, 05:35 PM #13
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Mystic Teal- 99 Trans Am & 01 CBR 929
understandable however.... if you get the 90/90 combo nowyou will see mroe of a gain than with that underdrive pulley without sacrificing accessories and can still get the underdrive pulley later without any money wasted. if you decided to do bigger on the manifold later then you would have wasted the cash on the 78mm
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01-03-2007, 07:31 PM #14
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Mystic Teal- 99 Trans Am & 01 CBR 929
Ohh and BTW the LS2 90mm manifold will bolt up to LS1 and go cheap on ebay (about 250$) so with that and a 90mm throttle body you are looking at around the same price as the 78mm manifold
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01-03-2007, 09:07 PM #15
I saw a comparison a while back and the ls2 intake didn't perform well on the ls1. I still feel that unless you're doing big cubes or forced induction the LS6 is the best bang for the buck intake out there.
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01-04-2007, 05:30 PM #16
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Mystic Teal- 99 Trans Am & 01 CBR 929
im not argueing that a LS6 manifold isnt a good mod, hell ive got one I have just been wanting to do a 90/90 for some time now because it will support just bolt on applications to balls to the wall blown apps. I never saw that comparison though.. did they say why it wasnt good on LS1? good thing to know!
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01-04-2007, 10:23 PM #17
I'll dig around and see if I can find it for you.
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01-05-2007, 05:38 AM #18
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black, 05 Roush- black, 99 T/A WS.6
I am interested in that info also Orion, keep us posted please.
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01-05-2007, 02:18 PM #19
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Mag Red- 2002 Vette
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01-05-2007, 02:31 PM #20
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