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Thread: Engine size??

  1. #1

    Engine size??

    I have inherited a ski with one bad piston from a client.
    Its the old green with purple trim GTX and in goood condition. No VIN visible
    Bore size is 76mm .
    I need to know what size this engine is-650? before i get a replacement piston and cylinder. I thought that they were 780 but the bore doesn't seem big enough.

  2. #2
    JayZ's Avatar
    Join Date
    Feb 2006
    mississauga, ontario
    sounds like a 95gtx. if so it had the 720 engine in it. pic would definitely help.

  3. #3
    The ski's have taken a "backseat" to the Corvette DarthAWM's Avatar
    Join Date
    Nov 2007
    Odessa, TX
    My first and best guess by the description of the trim. A 580

  4. #4
    "Hustler" Inkaddict's Avatar
    Join Date
    Aug 2007
    Bore on a 650 is 78mm... I think that would be a 580...

  5. #5
    water worx's Avatar
    Join Date
    Aug 2006
    Sunny Fla,Ft Pierce
    They never put a 720 in a GTX,94 & 95 came with 650s & almost looked the same,94 hood had a single guage & 95 had 2 guages with a visor over the guages.

  6. #6

    engine size

    Thanks boys. It seems we have a 650 from 1994 as this has 1 guage, green hood, white hull and mirrors and purple trim

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