Results 1 to 7 of 7

Injector Choices

This is a discussion on Injector Choices within the External Engine forums, part of the LSx Technical Help Section category; Which injectors would be a better choice the svo 30#ers or the racetronix's 32#ers? Car has full boltons w/ s2 ...

  1. #1
    Junior Member
    Join Date
    Sep 2005
    Location
    Brady TX
    Age
    40
    Posts
    4

    Injector Choices

    Which injectors would be a better choice the svo 30#ers or the racetronix's 32#ers? Car has full boltons w/ s2 5.3 heads and a f-11 cam.

  2. #2
    Blown, Stroked, & Sprayed

    Ed Blown Vert's Avatar
    Join Date
    Aug 1999
    Location
    San Diego, Ca
    Posts
    50,748

    Black
    383 Procharged & N20 Vert

    Alot of people use SVO 42#
    They worked great for me.
    Black 1999 Blown Convertible A4
    Forged 383, ATI D-1SC
    NX MAF Kit | 222/226 .585 115
    AS Stage II 6.0L FI Heads
    Moser 9" | 3.70 | Wavetrac | 35 Spline | Vigilante 3600
    548.0 RWHP - 563.8 RWTQ - 10# - D1

    666.0 RWHP - 734.2 RWTQ - 125 Shot - P1

    Black 2009 Escalade Hybrid 4WD
    Black 2008 GMC Yukon Hybrid 4WD (Totaled)

    Black 2013 Chevy Volt (Gone)

  3. #3
    Quote Originally Posted by Ed Blown Vert
    Alot of people use SVO 42#
    They worked great for me.
    Could you elaborate on the specs of your MAF & other fuel upgrades Pump system etc. as well as what you are using for tuning?? Oh and are your 42# inj's low or high impedance??

    Thanks,


    Brad
    Last edited by cudaz101; 10-19-2005 at 04:01 AM.

  4. #4
    No 55mph 1QuikWS6's Avatar
    Join Date
    Aug 2005
    Location
    USA
    Posts
    263

    Black
    2000 WS6 Trans Am

    SVO injectors are more than fine even running at the rwhp/rwtq figures stated in my sig. I'm @ no more than 90% duty cycle using these. Normal is to try and hold your injector duty cycle to around 85%.

    Over the winter I will be upgrading entire engine to the AFR Tony Mamo recipe and will either be going with the 36# or SVO42#. This setup should get me well into the UPPER 400 rwhp/rwtq range - N/A (if recipe followed correctly this has been proven on numerous cars) Oh, and I also have the Racetronix PnP Walbro Pump.

    There is an injector sizing formula that I can't seem to find at the moment - I'll look a little further and get back...

    -Jay-

  5. #5
    Senior Member ninobrn99's Avatar
    Join Date
    Aug 2003
    Location
    Honolulu HI
    Age
    34
    Posts
    2,486

    Pewter
    all bore 370 Trans Am

    from reseraching more and more, the 32 and 37 # injectors are a pain in the ass to tune! The rule of thumb from what ive see is 30's for boltons and mild cams and 42's for bigger cams and also heads. I personally will be going with the 42's because like Ed mentioned, they work so much better and they're easy to tune! Better to have a little bit more than enough injector than not enough. If all goes well, i dont plan on having my injector duty cycles over 80% at any given point.
    Nino

  6. #6
    Blown, Stroked, & Sprayed

    Ed Blown Vert's Avatar
    Join Date
    Aug 1999
    Location
    San Diego, Ca
    Posts
    50,748

    Black
    383 Procharged & N20 Vert

    Quote Originally Posted by cudaz101
    Could you elaborate on the specs of your MAF & other fuel upgrades Pump system etc. as well as what you are using for tuning?? Oh and are your 42# inj's low or high impedance??

    Thanks,


    Brad
    MAF is stock. I was running a Walbro 255, Hptuners and the 42's are high impedance.
    It was able to support almost 500 rwhp on FI.

    Now I run 60# Mototron injectors with the Racetronix Plug and Play system. Using their wiring harness.

  7. #7
    Junior Member
    Join Date
    Feb 2006
    Location
    Northern Indiana
    Posts
    10

    Black
    1997 Trans Am ws6

    You guys have any good threads (or tutorials) for more reading on fuel injectors? I just bought an LT1 that needs 'em replaced. The engine is otherwise stock, and I understand that if it stays that way, it needs to get the stock injectors put in. The only thing is that if I'm going to replace them anyway, I don't understand why it's that much more hassle to buy bigger injectors, tune accordingly, and then if major modification are done later, I can retune and get the full benefit of the bigger injectors.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Cam choices.
    By black04gto in forum Internal Engine
    Replies: 12
    Last Post: 12-17-2013, 09:39 AM
  2. Choices choices
    By dethinboots in forum GTO
    Replies: 16
    Last Post: 03-29-2013, 09:10 PM
  3. Help with Cam choices
    By Derrick1227 in forum Internal Engine
    Replies: 8
    Last Post: 04-17-2010, 03:43 PM
  4. so many choices
    By L4fyTafy in forum Suspension and Handling
    Replies: 1
    Last Post: 06-05-2007, 07:12 AM
  5. Choices - Do It Yourself
    By Ed Blown Vert in forum Stereo and Electronics
    Replies: 0
    Last Post: 11-21-2006, 04:41 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
  •