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Thread: Which IFR calibration to use - Corvette LS6 or Bosch 28.8 ' 58 PSI

  1. #31
    Joe (Moderator) joecar's Avatar
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    Yes, correct, so F-car IFR is sloped.

  2. #32
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    Good stuff, I'll have to see if the 01 and 02 fuel tables are the same and then pick one to use as the base before redoing ve and maf tables

  3. #33
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    This thread has driven me nuts for many moons because I could never find the info I'd previously read to substantiate my post on page 2. Here's some more generic info from a guy who seemed pretty confident in this data on IFR for Corvette injectors.

    Injectors @ 3 bar / 4 bar
    GM 12554271 24.7/28.5 97-98
    GM 12555894 22.3/26.3 99-00
    GM 12561462 24.7/28.5 01-04

    Not sure if this helps or further muddies the waters.
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

  4. #34
    Joe (Moderator) joecar's Avatar
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    I thought 1999/2000 IFR were same as 2000/2001, but I'll have to take another look at 1999/2000 stock IFR tables.

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