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  1. #1

    Lightbulb Holley 390 on a 4.3???

    i wanted to put a holley 390 on my 4.3, But theres no intake anywere i can find. ive heard of using an intake for a mercruser with an adapter plate, Is there a better way???

  2. #2


    Here's one for the older 4.3L heads

    And this one is for use on vortec heads

    Cheers ~Mykk

    Vortec 357ci Small Block Chevy: Big cam, high stall, long headers, rear gears. The typical formula.

  3. #3


    GM performance used to sell 4.3 intakes for dirt track cars, I havent looked for one in a while so I dont know if their still available.
    Mercruiser and Volvo Penta both make a 4.3, 4 barrel manifold also might have to try some place like Marine West or one of the other marine supply places.

  4. #4


    Thanks man! Sweet ride
    99 SILVERADO 4.3 vortec
    beat-up & fugly.
    like a rock with
    262,000 and countin

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