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

What injectors to run?

Thread Tools
 
Search this Thread
 
Old Jun 24, 2008 | 07:05 PM
  #1  
AustinYukon's Avatar
Thread Starter
Launching!
iTrader: (5)
 
Joined: May 2003
Posts: 299
Likes: 0
From: Austin, Texas
Default What injectors to run?

I'm starting to build up parts but need to know what injectors I will likely need to run so I can keep an eye out for some.

'03 LS1
FAST 92 Intake
FAST 92mm TB or LS2 90mm if I go DBW
TS LS6 stage 1 heads (should be what i'm going with)
MS3 or MS4 cam specs...(NOT the MS specifically but somewhere around those specs)

Will be NA

Should I be looking at a 36# injector?

Thanks
Reply
Old Jun 24, 2008 | 07:51 PM
  #2  
SweeTbone's Avatar
11 Second Club
20 Year Member
iTrader: (8)
 
Joined: Feb 2005
Posts: 2,545
Likes: 7
From: Toledo, OH
Default

Ford SVO 30 lbers will do nicely. They flow like 36 or 37 lbs on LS1s. But 36 lbs is the general ball park for those mods. You'll max out ~ 83% on the duty cycle.
Reply
Old Jun 24, 2008 | 08:15 PM
  #3  
ZL1Killa's Avatar
TECH Resident
iTrader: (17)
 
Joined: Sep 2004
Posts: 3,747
Likes: 0
From: NC - Charlotte area
Default

how much power do you plan on making?? if you can get the 92mm stuff cheaper than the 90mm stuff go for it......but unless you are going to be making some sick 900HP+ there is no need for 92mm

grab you some 37# or 42# racetronix injectors, you won't regret it. thats what i'm running, no problems at all
Reply
Old Jun 24, 2008 | 08:16 PM
  #4  
AustinYukon's Avatar
Thread Starter
Launching!
iTrader: (5)
 
Joined: May 2003
Posts: 299
Likes: 0
From: Austin, Texas
Default

Originally Posted by SweeTbone
Ford SVO 30 lbers will do nicely. They flow like 36 or 37 lbs on LS1s. But 36 lbs is the general ball park for those mods. You'll max out ~ 83% on the duty cycle.

Damnit, I passed up a few good deals on those because I wasn't sure.
Reply
Old Jun 24, 2008 | 08:27 PM
  #5  
AustinYukon's Avatar
Thread Starter
Launching!
iTrader: (5)
 
Joined: May 2003
Posts: 299
Likes: 0
From: Austin, Texas
Default

Originally Posted by ZL1Killa
how much power do you plan on making?? if you can get the 92mm stuff cheaper than the 90mm stuff go for it......but unless you are going to be making some sick 900HP+ there is no need for 92mm

grab you some 37# or 42# racetronix injectors, you won't regret it. thats what i'm running, no problems at all
I already bought a FAST 92 intake

I asked around on here but didn't get much feedback at all.

Oh well. It's a bitch not knowing anyone with an LSX because I am lost on all of this stuff.
Reply
Old Jun 25, 2008 | 10:42 AM
  #6  
AustinYukon's Avatar
Thread Starter
Launching!
iTrader: (5)
 
Joined: May 2003
Posts: 299
Likes: 0
From: Austin, Texas
Default

Originally Posted by ZL1Killa
how much power do you plan on making?? if you can get the 92mm stuff cheaper than the 90mm stuff go for it......but unless you are going to be making some sick 900HP+ there is no need for 92mm

grab you some 37# or 42# racetronix injectors, you won't regret it. thats what i'm running, no problems at all

I would like to put down around 450rwhp when everything is said and done.
Reply
Old Jun 25, 2008 | 10:50 AM
  #7  
JScamaro's Avatar
TECH Fanatic
iTrader: (6)
 
Joined: May 2004
Posts: 1,381
Likes: 0
From: Katy, Texas
Default

You can get a FAST 36 lb. injector for $300. With the LS1 fuel pressure it will act a little bigger.
Reply
Old Jun 25, 2008 | 11:06 AM
  #8  
RZRSEDGE's Avatar
TECH Enthusiast
iTrader: (21)
 
Joined: Jul 2006
Posts: 609
Likes: 0
From: Tellico Plains, TN
Default

Racetronix injectors here. I have the 37#, which are like a 43.5# or somewhere there abouts on our fuel system. Just remember you will have to have a tune for them. Good luck!
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 Jun 25, 2008 | 11:20 AM
  #9  
ZL1Killa's Avatar
TECH Resident
iTrader: (17)
 
Joined: Sep 2004
Posts: 3,747
Likes: 0
From: NC - Charlotte area
Default

Originally Posted by AustinYukon
I would like to put down around 450rwhp when everything is said and done.
yeh...well at least you got the parts that you know will handle it.
Reply




All times are GMT -5. The time now is 09:50 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