Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

FAST 104mm

Thread Tools
 
Search this Thread
 
Old Dec 3, 2008 | 12:20 PM
  #1  
kenp's Avatar
Thread Starter
11 Second Club
iTrader: (9)
 
Joined: Nov 2004
Posts: 795
Likes: 2
From: Cincinnati Area
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.
Reply
Old Dec 3, 2008 | 12:29 PM
  #2  
Abdullah's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Jun 2002
Posts: 1,455
Likes: 3
From: Kuwait
Default

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?
Reply
Old Dec 3, 2008 | 12:29 PM
  #3  
LS1BLKSS's Avatar
Banned Village Idiot
iTrader: (36)
 
Joined: Aug 2007
Posts: 2,551
Likes: 1
From: Anaheim,CA
Default

104mm??? from fast??? i thought the new one was a 92
Reply
Old Dec 3, 2008 | 12:29 PM
  #4  
sciff5's Avatar
11 Second Club
20 Year Member
Photogenic
iTrader: (1)
 
Joined: Jan 2006
Posts: 1,308
Likes: 1
Default

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
Reply
Old Dec 3, 2008 | 12:29 PM
  #5  
BlackScreaminMachine's Avatar
Internet Mechanic
20 Year Member
iTrader: (17)
 
Joined: May 2005
Posts: 9,830
Likes: 2
From: Wallingford CT
Default

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.
Reply
Old Dec 3, 2008 | 01:49 PM
  #6  
LS1-NAVY's Avatar
TECH Fanatic
15 Year Member
iTrader: (1)
 
Joined: Oct 2007
Posts: 1,007
Likes: 0
From: Denver, Colorado
Default

i think its for ls3/l92 motors could be wrong though

there is a thread about it somewhere on here just search
Reply
Old Dec 3, 2008 | 08:45 PM
  #7  
massls1guy's Avatar
TECH Fanatic
iTrader: (9)
 
Joined: Nov 2005
Posts: 1,311
Likes: 0
From: Mass
Default

here is the SEMA video about it, fast LSXR manifold:
http://video.lsxtv.com/video_detail.php?mId=7542
Reply
Old Dec 3, 2008 | 08:53 PM
  #8  
slowandrichws6's Avatar
TECH Apprentice
iTrader: (2)
 
Joined: Aug 2007
Posts: 358
Likes: 0
From: Ferndale, Ar
Default

looks pretty cool i guess
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Dec 3, 2008 | 09:00 PM
  #9  
speedracer5532's Avatar
9 Second Club
iTrader: (8)
 
Joined: Jul 2004
Posts: 920
Likes: 4
From: Berkeley Springs, WV
Default

The FAST LSXR Intake is for the L92/LS3 heads, not the cathedral port heads.
Reply
Old Dec 3, 2008 | 09:40 PM
  #10  
Detoxx03's Avatar
10 Second Club
iTrader: (14)
 
Joined: Jan 2007
Posts: 7,336
Likes: 74
From: Woodward Avenue
Default

Looks good
Reply
Old Dec 3, 2008 | 11:34 PM
  #11  
5.3LJimmy's Avatar
10 Second Club
20 Year Member
iTrader: (10)
 
Joined: Jun 2004
Posts: 2,279
Likes: 1
From: Napoleonville, LA
Default

You may want to cancel that order if you bought that for your stock heads.
Reply
Old Dec 3, 2008 | 11:38 PM
  #12  
Soul TKR's Avatar
TECH Junkie
iTrader: (4)
 
Joined: Jun 2004
Posts: 3,543
Likes: 2
From: San Diego, CA
Default

either way, if it's from FAST it'll probably cost
Reply
Old Dec 4, 2008 | 06:24 AM
  #13  
BlackScreaminMachine's Avatar
Internet Mechanic
20 Year Member
iTrader: (17)
 
Joined: May 2005
Posts: 9,830
Likes: 2
From: Wallingford CT
Default

Originally Posted by Soul TKR
either way, if it's from FAST it'll probably cost
He is just bitter. Just do a search
Reply
Old Dec 4, 2008 | 05:55 PM
  #14  
kenp's Avatar
Thread Starter
11 Second Club
iTrader: (9)
 
Joined: Nov 2004
Posts: 795
Likes: 2
From: Cincinnati Area
Default

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.
Reply
Old Dec 5, 2008 | 02:03 PM
  #15  
Abdullah's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Jun 2002
Posts: 1,455
Likes: 3
From: Kuwait
Default

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.
Reply
Old Dec 6, 2008 | 04:18 PM
  #16  
SweetS10V8's Avatar
12 Second Club
iTrader: (4)
 
Joined: Jun 2004
Posts: 2,580
Likes: 3
From: Michigan
Default

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.
Reply




All times are GMT -5. The time now is 03:38 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE