+ Reply to Thread
Results 1 to 7 of 7

Thread: 8.1 liter injectors into 5.3 liter

  1. 09-10-2008 08:44 AM #1
    03 blk z71's Avatar
    03 blk z71
    03 blk z71 is offline Junior Member
    Join Date
    Aug 2008
    Location
    Deer Creek, IL
    Posts
    3

    8.1 liter injectors into 5.3 liter

    I have heard you can put 8.1 liter injectors into a 5.3 liter. Has anyone done this or even know if it is possible? How hard is it, and what all components do I need to do this?
    Reply With Quote Reply With Quote
  2. 09-10-2008 02:24 PM #2
    Madd Maxx
    Madd Maxx is offline Senior Member
    Join Date
    Jul 2008
    Posts
    329
    The 8.1 liter marine injectors are a direct plug-in replacement for 5.3 and 6.0 liter truck engines. The GM part # for the Multec 44# injector is 17113739. They're available from several sources for about $400 for a set of eight. It's not difficult to replace injectors and no other components are needed to install them.
    Reply With Quote Reply With Quote
  3. 09-10-2008 03:38 PM #3
    Melissa@NelsonPerformance's Avatar
    Melissa@NelsonPerformance
    Melissa@NelsonPerformance is offline Custom Tuning
    Join Date
    Sep 2007
    Location
    SA, Texas
    Posts
    1,308
    42lb 8.1L Truck Injectors (direct swap)
    380.00 plus shipping
    call us and order them today
    210-626-0278

    Her name is A Meli-
    "If everything is under control, you are going too slow."- MA
    Reply With Quote Reply With Quote
  4. 09-13-2008 01:51 PM #4
    trx2stroke4life39's Avatar
    trx2stroke4life39
    trx2stroke4life39 is offline Names Stohner
    Send a message via AIM to trx2stroke4life39 Send a message via Yahoo to trx2stroke4life39
    Join Date
    Apr 2008
    Location
    newburgh, NY
    Posts
    512
    is there any gain from injectors alone?
    Step 1. crus at it.
    Step 2. get a hammer.
    Step 3. torch it.
    Reply With Quote Reply With Quote
  5. 09-13-2008 01:58 PM #5
    aarolar's Avatar
    aarolar
    aarolar is offline Very Confused
    Join Date
    Jun 2008
    Location
    SE Georgia
    Posts
    417
    Quote Originally Posted by trx2stroke4life39 View Post
    is there any gain from injectors alone?
    I don't think so not unless you have pretty extensive mods like some sort of FI. The computer will only dump as much fuel as you need irregardless of injectors.
    Tired ol' 5.7, 5.3 swap in progress
    Handle every stressful situation like a dog.
    If you can't eat it or hump it.
    Piss on it and walk away.
    Reply With Quote Reply With Quote
  6. 09-13-2008 02:17 PM #6
    Ramsey
    Ramsey is offline Senior Member
    Join Date
    Jun 2007
    Location
    saratoga springs ,new york {upstate ,adirondacks }
    Posts
    1,878
    Quote Originally Posted by trx2stroke4life39 View Post
    is there any gain from injectors alone?
    NO. only change them if you need to for supporting mods.f/i .do another mod that will be an advantage too you.good luck.
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
    Reply With Quote Reply With Quote
  7. 09-15-2008 09:04 AM #7
    Weirdguy's Avatar
    Weirdguy
    Weirdguy is offline Senior Member
    Send a message via MSN to Weirdguy
    Join Date
    Jul 2007
    Location
    The Green hell a.k.a Canada
    Posts
    392
    Quote Originally Posted by aarolar View Post
    I don't think so not unless you have pretty extensive mods like some sort of FI. The computer will only dump as much fuel as you need regardless of injectors.

    Fixed that for you
    Reply With Quote Reply With Quote
+ Reply to Thread
« Previous Thread | Next Thread »

Posting Permissions

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

Forum Rules