LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Injectors

Thread Tools
 
Search this Thread
 
Old Jun 6, 2003 | 12:30 AM
  #1  
rdavis93's Avatar
Thread Starter
Registered User
 
Joined: Jun 2002
Posts: 122
From: Peoria, IL, USA
Injectors

Ive got a 93 z28 w/ cc305 +about all the bolt-ons (A4). I have an intake leak so when I fix that I was prolly gonna put in bigger injectors and an adj fuel pres reg. Am I gonna add any hp? Do I really need the computer reprogrammed? What size inj would be good?
Old Jun 6, 2003 | 12:31 AM
  #2  
madwolf's Avatar
Registered User
 
Joined: Jul 2001
Posts: 4,577
From: DeKalb, IL
With your setup, I'd go with some 24# SVOs. Programming would be recommended as well.
Old Jun 6, 2003 | 12:34 AM
  #3  
rdavis93's Avatar
Thread Starter
Registered User
 
Joined: Jun 2002
Posts: 122
From: Peoria, IL, USA
Does programming really matter? I would rather not spend another 150 to get the thing reprogramed again if I dont really need it yet. Any power added????
Old Jun 6, 2003 | 12:41 AM
  #4  
thewinner's Avatar
Banned
 
Joined: May 2003
Posts: 1,090
programming helps alot!

Ion, im curious to why you recommend 24# injectors when the cars come stock with them? (maybe the 1993 cars didnt? or the SVOs actually flow more?) just curious, not a flame.
Old Jun 6, 2003 | 12:43 AM
  #5  
rdavis93's Avatar
Thread Starter
Registered User
 
Joined: Jun 2002
Posts: 122
From: Peoria, IL, USA
im pretty sure that 93s came w/ 22# injectors. I'll prolly just get 30# then if I have to get it programed.
Old Jun 6, 2003 | 12:44 AM
  #6  
madwolf's Avatar
Registered User
 
Joined: Jul 2001
Posts: 4,577
From: DeKalb, IL
I think 30s would be a little too much for him. Accel also makes 26 pound injectors, but I don't like Accels.

The 93s came with 22 pound injectors which means he's maxing them out pretty much. The Ford SVOs were rated as 24 lb/hr at 39.2 PSI. On our pressure of 43.5 PSI, they will flow just around 25.5 so that should provide enough fuel.
Old Jun 6, 2003 | 08:28 AM
  #7  
RdRacerZ28's Avatar
Registered User
 
Joined: Nov 2002
Posts: 128
From: Bloomington,MN
I'm right with ya Madwolf.....Accels are horrible but people buy them because they are cheap. Accel 30's actually flow 27-28. Typically too big for a 350 CI engine...the ECU can't shut them down enough at Idle. SVO are made by Bosch and are much better quality.
Old Jun 6, 2003 | 09:07 AM
  #8  
Chris'SS #2152's Avatar
Registered User
 
Joined: Jul 2000
Posts: 332
From: Joliet, IL
Originally posted by madwolf
I think 30s would be a little too much for him. Accel also makes 26 pound injectors, but I don't like Accels.
DO NOT GET ACCEL INJECTORS.....THEY SUCK!!!!!!

I bought a set that was mis matched which I guess they do alot.
Old Jun 6, 2003 | 09:47 AM
  #9  
IDOXLR8's Avatar
Registered User
 
Joined: Apr 1999
Posts: 2,784
From: Rochester Hills, MI
As stated earlier you should get come SVO 24lb injectors, AFPR, and programming (for the cam). When I installed an AFPR on my car I picked up 10 rwhp and 17 rwtq just from increasing my fp from 39 psi to 41 psi.
Old Jun 6, 2003 | 12:49 PM
  #10  
donot_4get's Avatar
Registered User
 
Joined: Aug 2001
Posts: 330
From: Delaware
Originally posted by IDOXLR8
As stated earlier you should get come SVO 24lb injectors, AFPR, and programming (for the cam). When I installed an AFPR on my car I picked up 10 rwhp and 17 rwtq just from increasing my fp from 39 psi to 41 psi.
Idoxlr8,
What do you have in your car that requires "83 lb Sieman injectors"

how about a 350/355 with a c306 and ported heads? what injectors should I get?

leo
Old Jun 6, 2003 | 12:50 PM
  #11  
madwolf's Avatar
Registered User
 
Joined: Jul 2001
Posts: 4,577
From: DeKalb, IL
Originally posted by donot_4get
Idoxlr8,
What do you have in your car that requires "83 lb Sieman injectors"

how about a 350/355 with a c306 and ported heads? what injectors should I get?

leo
30# SVOs will be perfect for that setup.
Old Jun 6, 2003 | 01:53 PM
  #12  
RdRacerZ28's Avatar
Registered User
 
Joined: Nov 2002
Posts: 128
From: Bloomington,MN
I'd love to see the spray pattern on those Siemens injectors hehehe those and Tomco basicly don't have one. Just a straight stream of fuel coming out. Like pissing on a rock lol
Old Jun 6, 2003 | 01:55 PM
  #13  
madwolf's Avatar
Registered User
 
Joined: Jul 2001
Posts: 4,577
From: DeKalb, IL
Originally posted by RdRacerZ28
I'd love to see the spray pattern on those Siemens injectors hehehe those and Tomco basicly don't have one. Just a straight stream of fuel coming out. Like pissing on a rock lol

Perfect comparison! (it's called a "pencil stream" BTW)
Here's some Siemens 95s for ya!

Also see some Bosch 88s here. Looks like a much better pattern to me...

Last edited by madwolf; Jun 6, 2003 at 02:06 PM.
Old Jun 7, 2003 | 05:38 AM
  #14  
donot_4get's Avatar
Registered User
 
Joined: Aug 2001
Posts: 330
From: Delaware
Originally posted by madwolf
Perfect comparison! (it's called a "pencil stream" BTW)
Here's some Siemens 95s for ya!

Also see some Bosch 88s here. Looks like a much better pattern to me...
Thanks madwolf!


I bet you'll get a lot of gallons per mile with those "Siemens 95s"
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
G-BODYT56
Parts For Sale
6
Jan 14, 2022 11:14 PM
magman
LT1 Based Engine Tech
7
Apr 15, 2016 03:08 AM
autoxr166
General 1967-2002 F-Body Tech
0
Sep 25, 2015 04:21 PM
form94
Parts For Sale
2
Sep 23, 2015 07:30 AM
95blkss
Parts For Sale
2
Sep 22, 2015 03:18 PM




All times are GMT -5. The time now is 12:20 AM.