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Holley TBI 502-3 Flow rate

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  • Holley TBI 502-3 Flow rate

    Does anyone know the flow rate (lb-hr) for this TBI? I'm in desperate need for an answer to this question.


    Thanks----Ray
    '86 S10 Blazer 4WD, '87 2.8 with 3.1 crank and pistons, A.R.I. "Stage 2 Cam", Iron Heads with stiffer springs, Holley TBI, Manifold bored to fit the TBI Base(4.3 size), Fiero Covers, MSD Coil, DynoMax Muffler and 2.5 Tailpipe, no cat, Auburn Limited Slip, 3.73 final Drive. 700R. '85 Fiero GT 3.4 Hybrid, relieved top intake and exhaust, 57mm TB, Auto. 3.06 final drive.

  • #2
    I would suggest a search on S-Series.org. There used to be a lot of talk on the Holley unit. I believe they are 45lbs but I cannot guarantee that.
    1993 EXT. CAB, 3.4L V6 TBI, 5spd manual. Sonoma
    1990 4Door, 3.2L V6 TBI, 5spd manual. 4X4. Trooper
    Because... I am, CANADIAN

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    • #3
      I read that it it was 400 or 450 can't remember which,I'll see if I can find it again.

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      • #4
        Hi there!

        I'm not 100% sure on injector flow rate. I'd say it's less than the 4.3 has, considering how my truck runs with the Holley vs. a 4.3 TBI with 4.3 injectors, but by how much I'm not sure.
        1982 Chevrolet S-10 Sport, 2.8V6 TBI
        2006 Pontiac Solstice

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        • #5
          Sorry.misread the post. I've read 33 for a 2.8 and 45 for the 4.3

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