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Thread: Stock injector size...

  1. #11
    Join Date
    Mar 2007
    Location
    Austin,TX
    Posts
    479
    Quote Originally Posted by zebra View Post
    wow... lots of numbers floating around now
    Many of those numbers are from stock EFI Live tuning files I have so if they're wrong then GM has been selling truck with incorrect information in the tune for 10 years.

    Here are the exact numbers(some will be slightly different since they're rated at either 43.5 or 58 psi).

    99-00 injectors-21.767 pounds per hour

    01-06 normal 4.8/5.3/6.0 engines-some I've seen have 25.2360 pph. Others are different for instance a 2006 stock 4.8L file I have has a scaled flow rate from 24.5-27.1 based on the amount of engine vacuum.

    8.1L truck injectors- I show 29.9483 pph

    8.1L marine injectors-41.6673 pph

  2. #12
    Join Date
    May 2009
    Location
    hot & windy
    Posts
    1,117
    gotcha.
    thanks for the info
    00 FRC - just top end, exhaust, and a hot-air intake
    99 Sierra - 5.3 / 5spd
    ↓ click the pic for the build ↓

  3. #13
    Join Date
    Feb 2009
    Location
    East Texas
    Posts
    38
    sweet lots of good info in here!
    Daily:
    2000 Z71 Tahoe... LPP LT's, O/R Y, 14" magnaflow, TB spacer, MAC CAI, 05 fans, Comp 218/222 .564/.566 112 lsa, Z06 springs, TB stall, and BB tune!

    Project:
    02 GMC ext cab, 5.3, comp 218/222 112lsa, comp 918's, and a few other goodies, bagged and bodydropped on 24's!

  4. #14
    Join Date
    Nov 2009
    Location
    Tucson,AZ
    Posts
    182
    so how big are the 06 flex fuel injectors? how would i find out? any way to test them?

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