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

Which is better ls6 or ls2 intake

Thread Tools
 
Search this Thread
 
Old Nov 20, 2010 | 09:01 PM
  #1  
transam8410's Avatar
Thread Starter
Staging Lane
iTrader: (1)
 
Joined: Jan 2010
Posts: 55
Likes: 0
Default Which is better ls6 or ls2 intake

I just picked up a good deal on a fast 90mm tb, now looking for the most cost affective intake, I've been looking around and finding that ls6 intakes are only 78mm, but the ls2 intakes have 90mm openings anybody have experience with this or any input
Reply
Old Nov 20, 2010 | 09:08 PM
  #2  
ULTIMATEORANGESS's Avatar
TECH Senior Member
20 Year Member
iTrader: (4)
 
Joined: Mar 2003
Posts: 10,985
Likes: 23
From: eatontown,nj
Default

ls6 but id look for a used FAST.
Reply
Old Nov 20, 2010 | 09:41 PM
  #3  
v1gray's Avatar
TECH Regular
15 Year Member
iTrader: (5)
 
Joined: Nov 2009
Posts: 447
Likes: 1
From: US
Default

LS6 flows better than LS2, but LS2 has the 90mm TB. Find a used Fast 90/92, or a ported LS2 intake.
Reply
Old Nov 20, 2010 | 10:00 PM
  #4  
Darkman's Avatar
TECH Addict
iTrader: (2)
 
Joined: Apr 2009
Posts: 2,167
Likes: 6
From: Spring, Texas
Default

http://www.ls1gto.com/forums/showthread.php?t=289456
Reply
Old Nov 21, 2010 | 12:06 AM
  #5  
garygnu's Avatar
TECH Senior Member
 
Joined: Feb 2009
Posts: 5,445
Likes: 4
Default

get the fast or any 4 bolt alum intake,BBK etc..they are better then the ls2 intakes .
Reply
Old Nov 21, 2010 | 06:14 AM
  #6  
Engine_HP's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: Jun 2008
Posts: 1,752
Likes: 9
From: Middle East.
Default

if both were stock id pick the ls6, if both were ported ill pick the ls2 for sure.
Reply
Old Nov 21, 2010 | 08:40 AM
  #7  
Darkman's Avatar
TECH Addict
iTrader: (2)
 
Joined: Apr 2009
Posts: 2,167
Likes: 6
From: Spring, Texas
Default

http://www.highperformancepontiac.co...o_results.html
Reply
Old Nov 21, 2010 | 09:58 AM
  #8  
LS1-450's Avatar
TECH Junkie
iTrader: (33)
 
Joined: Aug 2005
Posts: 3,783
Likes: 9
Default

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 Nov 27, 2010 | 08:45 AM
  #9  
98LSGun's Avatar
Teching In
iTrader: (2)
 
Joined: Dec 2007
Posts: 49
Likes: 0
From: Queens NYC
Default

Question regarding the ls2 intake.. i just picked up a ported one, with a nw90 tb, Question is converting the fuel rail, im told i cant use an ls1 rail, so now do i switch over to a stock ls2 or find an aftermarket one?
Reply
Old Nov 27, 2010 | 09:25 AM
  #10  
SILVER 2288 SS's Avatar
On The Tree
iTrader: (1)
 
Joined: Jan 2010
Posts: 147
Likes: 0
From: boaring place where theres more cows than people
Default

im interested in knowing about converting the ls1 fuel rails for the ls2 as well
Reply
Old Nov 27, 2010 | 09:36 AM
  #11  
King Nothing's Avatar
TECH Veteran
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (9)
 
Joined: Oct 2005
Posts: 4,768
Likes: 26
From: Central Valley
Default

Originally Posted by 98LSGun
Question regarding the ls2 intake.. i just picked up a ported one, with a nw90 tb, Question is converting the fuel rail, im told i cant use an ls1 rail, so now do i switch over to a stock ls2 or find an aftermarket one?
yep switch over to a stock LS2
Reply
Old Nov 27, 2010 | 06:43 PM
  #12  
SILVER 2288 SS's Avatar
On The Tree
iTrader: (1)
 
Joined: Jan 2010
Posts: 147
Likes: 0
From: boaring place where theres more cows than people
Default

Is everything interchangable
Reply
Old Nov 27, 2010 | 07:01 PM
  #13  
Darkman's Avatar
TECH Addict
iTrader: (2)
 
Joined: Apr 2009
Posts: 2,167
Likes: 6
From: Spring, Texas
Default

Originally Posted by SILVER 2288 SS
Is everything interchangable
The answer depends on what you mean by "everything." LS!, LS2, and LS6 intake manifolds are interchangeable in terms of bolting to any one of the three motors. The throttle bodies are not the same size and not insterchangeable in terms of bolt patterns. Finally, the fuel rails are not interchangeable, but can be adapted in some cases.
Reply
Old Nov 28, 2010 | 09:08 AM
  #14  
SILVER 2288 SS's Avatar
On The Tree
iTrader: (1)
 
Joined: Jan 2010
Posts: 147
Likes: 0
From: boaring place where theres more cows than people
Default

yeah the fuel rail is what i was refering to how do you adapt it
Reply
Old Nov 30, 2010 | 12:18 AM
  #15  
SILVER 2288 SS's Avatar
On The Tree
iTrader: (1)
 
Joined: Jan 2010
Posts: 147
Likes: 0
From: boaring place where theres more cows than people
Default

does it just attatch to the fuel line like the ls1 rail does
Reply
Old Nov 30, 2010 | 06:51 AM
  #16  
Darkman's Avatar
TECH Addict
iTrader: (2)
 
Joined: Apr 2009
Posts: 2,167
Likes: 6
From: Spring, Texas
Default

Originally Posted by SILVER 2288 SS
does it just attatch to the fuel line like the ls1 rail does
The LS2 OEM fuel rail was a direct substitute for my LS6 fuel rail in terms of fuel fittings, so I believe it is also a direct substiute for an LS1.
Reply




All times are GMT -5. The time now is 04:12 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