Want to buy 7.4. Mercruiser 8.1

Discussion in 'General Parts Classifieds - No Boats' started by Chuck Stark, Feb 11, 2018.

  1. Chuck Stark

    Chuck Stark New Member

    8
    Feb 3, 2018
    1995 40 express
    Twin 454 mercruiser shaft drive
    Want to purchase a 8.1 330 hp mercruiser for 40 express what' out there
     
  2. hottoddie

    hottoddie Well-Known Member

    Jan 11, 2012
    Boston/Cape Cod
    1986 Sea Ray 390 Express
    Garmin 4212 Chartplotter
    Garmin 24 HD Radar
    Garmin GSD 22 Sounder
    Garm
    454 Crusaders
    I thought 8.1s were 375hp and up. 330hp were 7.4s. What are you replacing and why?
     
  3. Chuck Stark

    Chuck Stark New Member

    8
    Feb 3, 2018
    1995 40 express
    Twin 454 mercruiser shaft drive
    Ok I'm sorry 33o up. I had a motor to let go in my 40 express
     
  4. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    You want a 7.4 then so all your stuff will bolt on. 8.1 is a different animal
     
    Chuck Stark likes this.
  5. hottoddie

    hottoddie Well-Known Member

    Jan 11, 2012
    Boston/Cape Cod
    1986 Sea Ray 390 Express
    Garmin 4212 Chartplotter
    Garmin 24 HD Radar
    Garmin GSD 22 Sounder
    Garm
    454 Crusaders
    What "let go" on the 7.4? Are you a DYI kind of owner? How many hours? You may or may not need a complete engine. 7.4s are pretty tough engines.
     
  6. Chuck Stark

    Chuck Stark New Member

    8
    Feb 3, 2018
    1995 40 express
    Twin 454 mercruiser shaft drive

    Its knocking i have bought a replacement.. thanks for all the inputs
     

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