LS1TECH - Camaro and Firebird Forum Discussion

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

Which FAST intake for me?

Thread Tools
 
Search this Thread
 
Old Feb 15, 2007 | 05:22 PM
Share
  #1  
Hemi Killer's Avatar
Hemi Killer
Thread Starter
14 Second Truck Club
iTrader: (6)
 
Joined: Sep 2002
Posts: 2,343
Likes: 0
From: Bossier City, LA
Default Which FAST intake for me?
I keep debating and feel like I'll be loosing a little bit either way I go. I feel like if I go with the 78mm, I'll be leaving some power on the table. Then, I feel like if I go with the 90mm, I'll be leaving some driveability on the table. With my mods (383 LS1/Full Bolt-ons/Full exhaust w/ cats) and truck (Daily Driver, 250-350 miles a week) which one would guys get? I'm gonna be getting one from Vengence new and ported. I just don't want to loose any low-end, like 3000 rpms and under. Then, just gain above 5000 rpms.
Last edited by Hemi Killer; Feb 15, 2007 at 05:31 PM.
Reply
0
Old Feb 15, 2007 | 05:25 PM
Share
  #2  
brad8266's Avatar
brad8266
TECH Senior Member
iTrader: (23)
 
Joined: Aug 2005
Posts: 8,797
Likes: 0
From: Watertown, NY
Default
90/90 FTW, a 78 will be kind of choking a 383.
Reply
0
Old Feb 15, 2007 | 05:30 PM
Share
  #3  
black01_WS6's Avatar
black01_WS6
TECH Junkie
iTrader: (13)
 
Joined: Sep 2004
Posts: 3,857
Likes: 0
From: Fort Myers, FL.
Default
get the 90 hands down. I wouldn't even consider getting a 78 with your setup.
Reply
0
Old Feb 15, 2007 | 06:25 PM
Share
  #4  
1997bird's Avatar
1997bird
TECH Fanatic
iTrader: (2)
 
Joined: Nov 2006
Posts: 1,360
Likes: 0
From: Aztec, NM
Default
90/90
https://ls1tech.com/forums/advanced-engineering-tech/631476-can-you-over-throttlebody-efi-motor.html
Reply
0
Old Feb 15, 2007 | 09:27 PM
Share
  #5  
Hemi Killer's Avatar
Hemi Killer
Thread Starter
14 Second Truck Club
iTrader: (6)
 
Joined: Sep 2002
Posts: 2,343
Likes: 0
From: Bossier City, LA
Default
So, I should be okay with the 90/90 set-up, considering my very mild cam/head set-up? What's another alternative to the FAST 90mm Throttle body? I heard the 90mm FAST ones suck and have problems. BTW, how many cfm is the stock (75mm), 78mm, and 90mm throttle bodies?

Also, do you car guys have to modify anything when you swap over to one of these intakes or does it bolt on exactly like the LS6? I'm asking because I know what I need to do the LS6 intake swap, just not sure about the FAST intake swap on a truck. Thanks!
Reply
0
Old Feb 15, 2007 | 11:36 PM
Share
  #6  
Hemi Killer's Avatar
Hemi Killer
Thread Starter
14 Second Truck Club
iTrader: (6)
 
Joined: Sep 2002
Posts: 2,343
Likes: 0
From: Bossier City, LA
Default
Also, what bolts are used on the intake?
Reply
0
Old Feb 24, 2007 | 02:00 PM
Share
  #7  
Hemi Killer's Avatar
Hemi Killer
Thread Starter
14 Second Truck Club
iTrader: (6)
 
Joined: Sep 2002
Posts: 2,343
Likes: 0
From: Bossier City, LA
Default
ttt...
Reply
0

Trending Topics

Old Feb 24, 2007 | 02:05 PM
Share
  #8  
slt200mph's Avatar
slt200mph
TECH Senior Member
20 Year Member
iTrader: (42)
 
Joined: Jul 2003
Posts: 7,067
Likes: 9
From: HOT'LANA, GAWJA
Default
90/90 is the only way to go with a 383 motor..the 78mm will be very close to a LS6 intake .... the Nick Williams 90 mm throttle body is the best on the market ..
Reply
0
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Feb 24, 2007 | 02:17 PM
Share
  #9  
Hemi Killer's Avatar
Hemi Killer
Thread Starter
14 Second Truck Club
iTrader: (6)
 
Joined: Sep 2002
Posts: 2,343
Likes: 0
From: Bossier City, LA
Default
Just curious, how would the LS6 do compared to the 90/90 in the lower rpms? Like under 3500 rpms?
Reply
0
Old Feb 24, 2007 | 05:34 PM
Share
  #10  
transaman98's Avatar
transaman98
TECH Enthusiast
iTrader: (16)
 
Joined: May 2005
Posts: 698
Likes: 0
From: Gardner, KS
Default
Kinda off subject, but hasn't FAST supposedly fixed the problems they were having with their 90mm tb? I havn't had any problems with mine.
Reply
0
Old Feb 24, 2007 | 05:37 PM
Share
  #11  
pdd's Avatar
pdd
TECH Veteran
iTrader: (3)
 
Joined: Aug 2003
Posts: 4,156
Likes: 0
From: dudley mass
Default
90mm fast-hands down
Reply
0
Tags
Back to Subforum
Generation III External Engine
View Next Unread
where can i get a y pipe w/ cats for pch




Advanced Search

All times are GMT -5. The time now is 03:59 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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