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  1. #1
    Registered Da Patriot's Avatar
    My Boats:
    91 Wellcraft Nova w/ bb
    Join Date
    Jul 2002
    Lake St Clair, MI

    Question Specs on a 454 330HP

    I was wondering if any one out there knows the specs on a 454 with 330 horse. I need specs for intake valves, exhaust valves, compression ratio, and camshaft intlift and exhlift. I have a computer program called DYNO 2000 which simulates a dyno test based on the information you give it. Its a pretty neat program and it would help on deciding what kind of mods to make during the winter. If anyone could point me in the right direction I would be greatful.

  2. #2
    Registered ragtop409's Avatar
    My Boats:
    1995 Nova Spyder
    Join Date
    Jul 2002
    Maximo FLA
    run a search for them they have been posted in the Tech forum several times. I even posted the print out from that program on a 330hp. Also check out the desk top dyno for Denis More it is on the first page.
    Attached Images Attached Images

  3. #3
    Registered Crazyhorse's Avatar
    My Boats:
    38 Cigarette flat-deck
    Join Date
    Jan 2001
    Holland MI
    Compression ratio for the 330 is 7.8:1, intake valve is 2.065 dia., exhaust valve is1.720 dia., camshaft is 289/302 dur@.006 lift, 214/218@.050 lift, .461 intake valve lift, .479 exhaust valve lift, wit 1.7 ratio rocker arms. Lobe centerline is 115 degrees, with 64 degrees overlap. I'm sure someone will correct me if I have the info wrong.

  4. #4
    Scarab P-29
    Da Patriot: post in the technical forum with all your ideas and Im sure someone will steer you in the right direction, there are some pretty experienced people on the board.
    P.S. think halloween boat party!

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