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Prop Size For 35' Viking 1986

Discussion in 'Viking Yacht' started by ERTW, Jun 20, 2018.

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  1. ERTW, Jun 20, 2018
    #1
    ERTW

    ERTW Member

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    Trying to figure out optimum prop size for 35' viking convertible with twin 3208 TA 375hp , 1.512:1 ratio gearbox. Currently running 22 x 24 3 blade with no 7 cup. What are others running? I find I'm under rpm by about 300rpm.
  2. Capt Ralph, Jun 20, 2018
    #2
    Capt Ralph

    Capt Ralph Senior Member

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    That is a lot of pitch.
    You called Viking yet?
  3. ERTW, Jun 21, 2018
    #3
    ERTW

    ERTW Member

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    Yes I emailed with viking and the hull number calls out for a 22 x 24 3 blade but not sure about the number cup they think possibly no. 2 cup.
  4. sheraton, Jul 23, 2018
    #4
    sheraton

    sheraton Member

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    My Friend has the same exact boat and power, he has 22 x 23 with no cup.
  5. Gene Trevail, Oct 8, 2022
    #5
    Gene Trevail

    Gene Trevail New Member

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    I have a 86 35 Viking Sportsfish Convertible with twin 383 Stroker mercruiser engines repower from the 454 mercruisers. Any recommendations on the prop size for these gas engines or will the old props work? Ty Gene
  6. Capt Ralph, Oct 8, 2022
    #6
    Capt Ralph

    Capt Ralph Senior Member

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    You would be amazed what that new engine will do compared the the old LBC. I would give the original wheels a try and IF needed, a lil pitch removed.
    The important thing to watch, you make WOT RPM per spec with good load on board. Full fuel, water and the gear and people you usally cruise with.