C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Using LS1 injectors on L98 engine.

Thread Tools
 
Search this Thread
 
Old Dec 7, 2005 | 08:41 PM
  #1  
MrNuke's Avatar
MrNuke
Thread Starter
Le Mans Master
10 Year Member
 
Joined: Apr 2000
Posts: 6,341
Likes: 1
From: Shelton CT
Default Using LS1 injectors on L98 engine.

I am thinking of going to a larger set of injectors as I MUST be maxing my 24lb ones out with the supercharger now. If I get a set of LS1 injectors 28lb I believe are they direct fit? Would they fit under the LPE Superram setup I have on here now? My other options also are a set of 30 or 36 lb Ford motorsport injectors.

Lemme know guys..
Reply
Old Dec 7, 2005 | 09:19 PM
  #2  
vetster86's Avatar
vetster86
Racer
 
Joined: May 2004
Posts: 476
Likes: 0
From: DFW TX
Default

I'm still working on my 86 heads,cam and supercharger, as with fuel supply I'm using 24lb matched flowed Ford blue tops.
Hi volume in tank pump and in line booster pump with the racetronix harness.


The LS1 injectors will work but you have to do a little trim job on them so the clips will work, and maybe grind the fuel rail boss down some.
I don't think you can get a good tune going over 30lb injectors with the stock ECM.

Last edited by vetster86; Dec 7, 2005 at 09:25 PM.
Reply
Old Dec 7, 2005 | 09:26 PM
  #3  
MrNuke's Avatar
MrNuke
Thread Starter
Le Mans Master
10 Year Member
 
Joined: Apr 2000
Posts: 6,341
Likes: 1
From: Shelton CT
Default

Actually I just realized that the LS1 injectors are rated @ 58PSI not our stock 35-43psi, so they wouldn't make much difference anyways..

I'm gonan tune the car to use the 24lb-ers I have in there now, we'll see if they work.. Should be ok.. Otherwise I'll probably just get a set of 30lb-ers from FMS over winter..
Reply
Old Dec 7, 2005 | 10:16 PM
  #4  
Racetronix's Avatar
Racetronix
Supporting Vendor
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Dec 2001
Posts: 1,573
Likes: 31
From: A dealer near you.
Default

http://www.racetronix.com/621020.html
Reply
Old Dec 7, 2005 | 11:39 PM
  #5  
USAsOnlyWay's Avatar
USAsOnlyWay
Le Mans Master
20 Year Member
 
Joined: Dec 2002
Posts: 5,270
Likes: 3
From: Seattle Area WA
Default

Nuke, I am using LS1s on my Superram.
It is tight as hell and I recommend hooking up the electrical connections before installing the plenum.

But they work with the only mod being using a dremel to extend the groove all the way around and allow the use of the clips.

Took a whoopping 5 minutes to do 8.

Also, yes, you are right about the pressure differences. At stock pressure they act as if they are 24.4lb/hr or 25lb/hr (I have heard different stories on this). BUT if you turn up the pressure with an AFPR, bingo 28lb/hr injectors.
Reply
Old Dec 9, 2005 | 05:42 PM
  #6  
L-9ate's Avatar
L-9ate
Advanced
10 Year Member
 
Joined: Feb 2004
Posts: 66
Likes: 0
From: Blue Springs MO
Default

Running the LS1's at a lowered fuel pressure you have not experienced any performance loss?
Reply
Old Dec 9, 2005 | 06:34 PM
  #7  
Morley's Avatar
Morley
Drifting
 
Joined: Mar 2005
Posts: 1,923
Likes: 0
From: GA
Default

Don't go by them being "LS1" injectors...they used a few different flow sizes in the LS1's. You need to get the mfg P/N for the injectors and look them up that way (for flow size).
Reply
Old Dec 9, 2005 | 07:48 PM
  #8  
L-9ate's Avatar
L-9ate
Advanced
10 Year Member
 
Joined: Feb 2004
Posts: 66
Likes: 0
From: Blue Springs MO
Default

Thank you for the response and the size issues, but once I ensure I have 28lb injectors will these run alright at 42 psi?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-1

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-2

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-3

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-4

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-5

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-6

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-7

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-8

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-9

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
Old Dec 9, 2005 | 07:57 PM
  #9  
USAsOnlyWay's Avatar
USAsOnlyWay
Le Mans Master
20 Year Member
 
Joined: Dec 2002
Posts: 5,270
Likes: 3
From: Seattle Area WA
Default

They appear to work fine. A guy at SLP says they work fine on his 88. I will say in hindsight though, if the price isn't like it was for me (99$) I would just buy the correct FMS ones.
Reply
Old Dec 9, 2005 | 08:20 PM
  #10  
FD2BLK's Avatar
FD2BLK
Safety Car
20 Year Member
 
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Default

I had the LS1 injectors on my hotcamed LT1 and they worked great. I got them for $99 also and for that price you get a nice Bosch injector, hard to get a better deal. Also the mod as stated takes all of 5 min.
Reply
Old Dec 10, 2005 | 12:15 PM
  #11  
L-9ate's Avatar
L-9ate
Advanced
10 Year Member
 
Joined: Feb 2004
Posts: 66
Likes: 0
From: Blue Springs MO
Default

Rock on what pressure are you running?
Reply

Get notified of new replies

To Using LS1 injectors on L98 engine.





All times are GMT -4. The time now is 11:27 PM.

story-0
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-1
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-2
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-3
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-4
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-5
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-6
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-7
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-8
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-9
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE