Results 1 to 4 of 4

2005 CTS-V Info Needed

This is a discussion on 2005 CTS-V Info Needed within the General Help forums, part of the LSx Technical Help Section category; First off, this is my first post here. I am not new to vehichles, fabrication, or engines...but I am totally ...

  1. #1
    Junior Member
    Join Date
    Mar 2014
    Location
    Augusta, GA
    Posts
    2

    Black
    2010 Custom Rock Buggy

    2005 CTS-V Info Needed

    First off, this is my first post here. I am not new to vehichles, fabrication, or engines...but I am totally new to computer controlled engines...specifically LS based. I am currently swapping a 2005 CTS-V LS6 into my rock buggy. I am having some issues figuring out all my parameters. I am using a Holley HP 550-602 harness and computer kit. Quest #1: I need to know the stock injector psi and flow rate to enter into the tune software. Quest #2: I have a Quicktime RM6093 Midplate. I could not get the 168T flexplate past the midplate during the install. Am I missing something? The pulled engine was a 1973 427 TD with a 168T flexplate, so I thought it would all work. Thank you in advance for your help.
    Last edited by 73fjbuggy; 03-11-2014 at 11:08 AM.

  2. #2
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,576

    Black & Blue
    '02 WS.6 / '07 Suburban

    Welcome to the site!

    Had a chance to play with and help tune a rock buggy a while back - they are amazing machines. I can pull up a stock tune for an '05 CTS-V through an on-line tune repository and it shows these injector flow numbers at the stated kPa of manifold vacuum:


    29.08 at 0 kPa
    29.33 at 5
    29.51 at 10
    29.70 at 15
    29.89 at 20
    30.01 at 25
    30.20 at 30
    30.38 at 35
    30.57 at 40
    30.75 at 45
    30.94 at 50
    31.06 at 55
    31.25 at 60
    31.44 at 65
    31.56 at 70
    31.75 at 75
    31.93 at 80

    Stock injector rating is 28 lbs/hr at 3 bar. That translates to around 33.9 lbs/hr at 58 psi and the GM P/N on the stock injectors should be 12569113. I can verify this in my books tomorrow if something doesn't look right to you.

  3. #3
    Junior Member
    Join Date
    Mar 2014
    Location
    Augusta, GA
    Posts
    2

    Black
    2010 Custom Rock Buggy

    Quote Originally Posted by pajeff02 View Post
    Welcome to the site!

    Had a chance to play with and help tune a rock buggy a while back - they are amazing machines. I can pull up a stock tune for an '05 CTS-V through an on-line tune repository and it shows these injector flow numbers at the stated kPa of manifold vacuum:


    29.08 at 0 kPa
    29.33 at 5
    29.51 at 10
    29.70 at 15
    29.89 at 20
    30.01 at 25
    30.20 at 30
    30.38 at 35
    30.57 at 40
    30.75 at 45
    30.94 at 50
    31.06 at 55
    31.25 at 60
    31.44 at 65
    31.56 at 70
    31.75 at 75
    31.93 at 80

    Stock injector rating is 28 lbs/hr at 3 bar. That translates to around 33.9 lbs/hr at 58 psi and the GM P/N on the stock injectors should be 12569113. I can verify this in my books tomorrow if something doesn't look right to you.
    Thanks for the quick reply. As I said before, I have experience in other things but none in computer controlled fuel injection or LS Engines. So you have to dumb it down for me. Is 33.9lbs and 58psi what I should enter into the Holley tune software for my injector info? Or is it the 28lbs you said was at 3 bar (I don't know what 3 bar means). Thanks again for the assistance. By the way, I keep tying to post a pic of my buggy and it keeps denying it saying that new posts are limited in the number of URLs, but there are no URLs yet?!

  4. #4
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,576

    Black & Blue
    '02 WS.6 / '07 Suburban

    Host your pics on sites like Photobucket and then copy and paste the [IMG] code into your post on here. I think the site security settings were tweaked a while back due to spammers so you may need to meet the 10 day/10 post rule before the pics will be allowed.

    I am not sure of the format that your tuning software wants for an input. A stock LS engine fuel system supplies fuel at 58 psi. The LS6 injectors have a 3 bar rating (43.5 psi) of 28 lbs/hr. However, increasing the pressure also increases the flow. You can see that in the charts on this site: Stan Weiss' - Electronic Fuel Injector (EFI) Flow Data Table The Delphi injectors are listed about halfway down the page and then Rochester/GM is further on down. The engine management software should have a scaling function for use with different fuel pressures.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Question: some info needed on injectors
    By DADCRUISER in forum Internal Engine
    Replies: 1
    Last Post: 03-13-2014, 05:51 PM
  2. info needed
    By duke nukem in forum Suspension and Handling
    Replies: 9
    Last Post: 01-29-2010, 01:33 PM
  3. Help: Trans am needed info
    By BamBam87 in forum General Help
    Replies: 9
    Last Post: 08-02-2009, 02:31 AM
  4. hey new here and lookin for much needed info
    By 79ls1 in forum New Member Introductions
    Replies: 3
    Last Post: 01-10-2008, 08:20 PM
  5. Replies: 1
    Last Post: 11-21-2006, 01:24 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •