LS1TECH - Camaro and Firebird Forum Discussion

LT1-LT4 Modifications 1993-97 Gen II Small Block V8

what injectors?

Thread Tools
 
Search this Thread
 
Old May 3, 2010 | 01:59 AM
Share
  #1  
meangreenchevy's Avatar
meangreenchevy
Thread Starter
On The Tree
iTrader: (2)
 
Joined: Aug 2008
Posts: 163
Likes: 0
Default what injectors?
hey guys im building a 355 stock crank, 6.0 forged scat rods, mahle -5cc forged pistons,heads similiar to le2s, 228/236 .565/.565 110 lsa cam, 1.6 rr, 58mm tb, and walbro 255. compression should be about 11:1. it MAY see a 100 shot plate kit maybe. what do you guys recommend and where to get them thanks
Reply
0
Old May 3, 2010 | 02:01 AM
Share
  #2  
jay7199's Avatar
jay7199
TECH Resident
iTrader: (9)
 
Joined: May 2009
Posts: 809
Likes: 0
From: Austin/Cedar Park
Default
i'd think ford redtops would be fine, i have them in my H/C/I ls1 and im not running out of fuel.
Reply
0
Old May 3, 2010 | 09:50 AM
Share
  #3  
meangreenchevy's Avatar
meangreenchevy
Thread Starter
On The Tree
iTrader: (2)
 
Joined: Aug 2008
Posts: 163
Likes: 0
Default
those are like 30lb injectors right?
Reply
0
Old May 3, 2010 | 10:19 AM
Share
  #4  
Low N Slow's Avatar
Low N Slow
TECH Enthusiast
iTrader: (4)
 
Joined: Mar 2005
Posts: 546
Likes: 0
From: Stanwood, WA
Default
My motor is setup very close to yours and I'm seeing over 90 percent duty cycle over 6000 RPMs with 32 lb racetronix injectors, if I was doing it again I would get 36 or 42 lb injectors just to be safe and allow for future upgrades.
Reply
0
Old May 3, 2010 | 10:26 AM
Share
  #5  
meangreenchevy's Avatar
meangreenchevy
Thread Starter
On The Tree
iTrader: (2)
 
Joined: Aug 2008
Posts: 163
Likes: 0
Default
so i wont matter if i get a bigger injector then i need?
Reply
0
Old May 3, 2010 | 07:13 PM
Share
  #6  
strokin93z's Avatar
strokin93z
11 Second Club
iTrader: (1)
 
Joined: Apr 2007
Posts: 308
Likes: 0
From: Missouri
Default
you may be okay with the ford redtops. You may want to consider 42# just to have some growing room.
Reply
0
Old May 4, 2010 | 02:48 PM
Share
  #7  
fex77k's Avatar
fex77k
8 Second Club
15 Year Member
iTrader: (2)
 
Joined: Sep 2006
Posts: 1,668
Likes: 2
From: AR
Default
Originally Posted by meangreenchevy
so i wont matter if i get a bigger injector then i need?
I am running the green top 42's cause I got them for a steal, if your tuner is worth anything he can make the larger injectors work just fine. Just don't go overboard with larger injectors if you don't need them.
Reply
0

Trending Topics

Old May 4, 2010 | 05:02 PM
Share
  #8  
1961ba427's Avatar
1961ba427
TECH Fanatic
iTrader: (26)
 
Joined: Mar 2010
Posts: 1,909
Likes: 1
From: Milledgeville, GA
Default
I always heard our 24 lb/hr ones were good up to almost 450 rwhp??? Maybe I heard wrong. Perhaps talk to your tuner and see what he recommends for your set-up? I'd think 30's would be enough.
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 May 4, 2010 | 05:07 PM
Share
  #9  
RamAir95TA's Avatar
RamAir95TA
TECH Senior Member
iTrader: (2)
 
Joined: May 2005
Posts: 9,467
Likes: 8
From: South Jersey
Default
Originally Posted by 1961ba427
I always heard our 24 lb/hr ones were good up to almost 450 rwhp??? Maybe I heard wrong. Perhaps talk to your tuner and see what he recommends for your set-up? I'd think 30's would be enough.
Stock injectors will be far maxed out by then - no way.
Reply
0
Old May 4, 2010 | 05:16 PM
Share
  #10  
robsquikz28's Avatar
robsquikz28
TECH Veteran
iTrader: (246)
 
Joined: Mar 2008
Posts: 4,984
Likes: 1
From: Chicago/Crown point
Default
definately not 450hp on stock injectors
Reply
0
Old May 4, 2010 | 05:17 PM
Share
  #11  
1961ba427's Avatar
1961ba427
TECH Fanatic
iTrader: (26)
 
Joined: Mar 2010
Posts: 1,909
Likes: 1
From: Milledgeville, GA
Default
Originally Posted by RamAir95TA
Stock injectors will be far maxed out by then - no way.
Maybe they meant 450 flywheel HP then? IDK. Was just repeating what I thought I heard to promote discussion, not trying to state a fact. I know there is a chart showing the recommended sizes based on 43 psi, but don't remember where I saw it. Our cars are tuned to run lower psi than that anyway right?
Reply
0
Old May 4, 2010 | 05:19 PM
Share
  #12  
dangalla's Avatar
dangalla
On The Tree
 
Joined: May 2007
Posts: 143
Likes: 1
From: N.E. PA
Default
Originally Posted by Low N Slow
My motor is setup very close to yours and I'm seeing over 90 percent duty cycle over 6000 RPMs with 32 lb racetronix injectors, if I was doing it again I would get 36 or 42 lb injectors just to be safe and allow for future upgrades.
i agree completely, you will be very close with a red top (svo 30#) - i have those and wish i went a little bigger, the next size up racetronix injector looks good (36 or 37 cant remember)

Originally Posted by 1961ba427
I know there is a chart showing the recommended sizes based on 43 psi, but don't remember where I saw it. Our cars are tuned to run lower psi than that anyway right?
our cars run at 43.5, ford uses 39.5 and that is what there injectors are rated at
Reply
0
Old May 4, 2010 | 06:02 PM
Share
  #13  
Wicked94Z's Avatar
Wicked94Z
10 Second Club
iTrader: (26)
 
Joined: Jul 2005
Posts: 3,725
Likes: 1
From: Spokane, Wa
Default
run a 36 and be done with it. when i was running gas i was about 80% on 42#ers but my setup was alot more radical.
Reply
0
Old May 4, 2010 | 06:02 PM
Share
  #14  
jay7199's Avatar
jay7199
TECH Resident
iTrader: (9)
 
Joined: May 2009
Posts: 809
Likes: 0
From: Austin/Cedar Park
Default
isnt there like a ford injector smaller then the red top? but still flows more on a lt1 vs stock lt1 injectors?
Reply
0
Old May 4, 2010 | 07:59 PM
Share
  #15  
draggin97s10's Avatar
draggin97s10
TECH Fanatic
iTrader: (2)
 
Joined: Mar 2009
Posts: 1,471
Likes: 0
Default
sorry to hijack but do the make a black top? is it a 60#er
Reply
0
Old May 4, 2010 | 08:27 PM
Share
  #16  
dangalla's Avatar
dangalla
On The Tree
 
Joined: May 2007
Posts: 143
Likes: 1
From: N.E. PA
Default
fords website
http://www.fordracingparts.com/parts...uel%20Metering
Reply
0
Old May 5, 2010 | 09:47 AM
Share
  #17  
blackz93's Avatar
blackz93
TECH Fanatic
iTrader: (2)
 
Joined: May 2003
Posts: 1,661
Likes: 1
From: nc
Default
Originally Posted by jay7199
isnt there like a ford injector smaller then the red top? but still flows more on a lt1 vs stock lt1 injectors?
Yes, the 24lb injector...

http://cgi.ebay.com/ebaymotors/SVO-F...Q5fAccessories
Reply
0
Old May 17, 2010 | 09:08 AM
Share
  #18  
meangreenchevy's Avatar
meangreenchevy
Thread Starter
On The Tree
iTrader: (2)
 
Joined: Aug 2008
Posts: 163
Likes: 0
Default
anyone else have any other links? will an ls1 injetor fit an lt1? im looking at a set of 30# svo injectors right now but he dosent know if they will work in an lt1
Reply
0
Old May 17, 2010 | 11:40 PM
Share
  #19  
blackz93's Avatar
blackz93
TECH Fanatic
iTrader: (2)
 
Joined: May 2003
Posts: 1,661
Likes: 1
From: nc
Default
Yes they will. I have them in mine.
Reply
0
Old May 17, 2010 | 11:45 PM
Share
  #20  
TravisMcGill2000's Avatar
TravisMcGill2000
11 Second Club
iTrader: (2)
 
Joined: Apr 2007
Posts: 1,722
Likes: 1
From: chats,ga
Default
Im running them in my car also.
Reply
0



Advanced Search

All times are GMT -5. The time now is 05:22 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 | 2026-06-04 18:13:20


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