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Old 12-03-2008, 12:20 PM
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Default FAST 104mm

I had been trying to find a good price on a used or preowned Fast 90 and I missed a few what I considered to be decent deals, but was a little surprised to see the new 104mm for $810 Delivered. I couldn't resist.
Old 12-03-2008, 12:29 PM
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Originally Posted by kenp
I had been trying to find a good price on a used or preowned Fast 90 and I missed a few what I considered to be decent deals, but was a little surprised to see the new 104mm for $810 Delivered. I couldn't resist.
what i know the latest Fast intake for LS1 engines is the 92mm Fast.

where did you find 104mm Fast? do you have a link?
Old 12-03-2008, 12:29 PM
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104mm??? from fast??? i thought the new one was a 92
Old 12-03-2008, 12:29 PM
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I'm starting to seriously wonder if we need bigger and bigger throttle bodies??

Doesnt a 90mm flow something like 1000 Cfm already??

104mm jeesh what are we feeding a 500+CI big block here
Old 12-03-2008, 12:29 PM
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Originally Posted by kenp
I had been trying to find a good price on a used or preowned Fast 90 and I missed a few what I considered to be decent deals, but was a little surprised to see the new 104mm for $810 Delivered. I couldn't resist.
Link Please.

I must have missed that.... 104mm eh? For L92's or something.
Old 12-03-2008, 01:49 PM
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i think its for ls3/l92 motors could be wrong though

there is a thread about it somewhere on here just search
Old 12-03-2008, 08:45 PM
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here is the SEMA video about it, fast LSXR manifold:
http://video.lsxtv.com/video_detail.php?mId=7542
Old 12-03-2008, 08:53 PM
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looks pretty cool i guess
Old 12-03-2008, 09:00 PM
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The FAST LSXR Intake is for the L92/LS3 heads, not the cathedral port heads.
Old 12-03-2008, 09:40 PM
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Looks good
Old 12-03-2008, 11:34 PM
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You may want to cancel that order if you bought that for your stock heads.
Old 12-03-2008, 11:38 PM
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either way, if it's from FAST it'll probably cost
Old 12-04-2008, 06:24 AM
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Originally Posted by Soul TKR
either way, if it's from FAST it'll probably cost
He is just bitter. Just do a search
Old 12-04-2008, 05:55 PM
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Like most of you, I think it's a 92mm. When I asked the guy selling them if it was a 92mm he said no, it's the newest intake from FAST for the LS1/2/6 and it's 104mm. I questioned that but.... And I checked the FAST site and they don't say anything about it. I knew this would cause a bit of a stir.

I just hope the new FASTER 200mm throttle body I have will bolt up to it.
Old 12-05-2008, 02:03 PM
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Originally Posted by kenp
I had been trying to find a good price on a used or preowned Fast 90 and I missed a few what I considered to be decent deals, but was a little surprised to see the new 104mm for $810 Delivered. I couldn't resist.
now i got the info, the new 104mm Fast intake is for the LS3/L92 heads.
Old 12-06-2008, 04:18 PM
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The LSXr manifold is 102mm, not 104mm. It is definitely for square port LS3/L92 not cathedral port heads.

The LSX 92mm is the Current FAST cathedral port intake, I have one on my truck.




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