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  1. #1

    Default 290 serial number

    I have a 290sp that needs work. Can anyone tell me what drive I have (gear ratio etc) if I have the serial number? 2900701B


  2. #2

    Default Re: 290 serial number

    Its behind a V8 (350) if that helps.

  3. #3
    Join Date
    Mar 2009
    Portland, Oregon,

    Default Re: 290 serial number

    Remove the propeller, remove the ring anode and wire brush the AFT end on the prop shaft bearing carrier.
    The numbers 1.61 should be stamped into the carrier.

    For the s/p drive, 1.61:1 is the correct over-all reduction for the V-8 engine.

    Last edited by RicardoMarine; 02-26-2020 at 07:33 PM.
    Rick ... aka Ricardo..... AQ series Volvo Penta repair
    Portland, Oregon
    28' SDN F/B w/ twin Volvo Penta 5.7L DP drives

    "Intellectual growth should commence at birth and cease only at death." Albert Einstein

    Please... no PMs! Post your questions on the forum.

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