Gm 7.4l Marine Reman Long Block Engine 1973-1990

  • Size: 7.4L / 454
  • Years: 1973-90
  • HP Rating: 330
  • Block Casting: 959, 445, 286, 775, 289
  • Notes: Standard rotation, Mark IV, 2 pc rear seal, flat tappet, 10 bolt round intake port. 2 bolt main. Use USM32 for Reverse rotation

Be the first to review this product

Availability: In stock

SKU:USM25

$5,630.00
    • paypal
    • paypal
    • american express
    • master card
  • Product Description
  • Product Information
  • Warranty Policy
  • Reviews
Our Long Block Engine Includes:


  • Cam/Main/Rod Bearings  
  • Oil Pump  
  • Timing Gears  
  • Camshaft  
  • Pistons  
  • Valves  
  • Connecting Rods  
  • Piston Rings  
  • Valve Guides  
  • Head Gaskets  
  • Push Rods  
  • Valve Keepers  
  • Lifters  
  • Rocker Arms  
  • Valve Springs  


  • Call us today with any questions and to verify this engine will work for you:

    (631)991-7700

    Name Gm 7.4l Marine Reman Long Block Engine 1973-1990
    SKU USM25
    Brand GM Marine
    Liters 7.4L
    Block Casting Number 959, 445, 286, 775, 289
    CID 454
    Horsepower 330
    Standard rotation, Mark IV, 2 pc rear seal, flat tappet, 10 bolt round intake port. 2 bolt main. Use USM32 for Reverse rotation

    There are currently no review for this product.

    Write Your Own Review

    You're reviewing: Gm 7.4l Marine Reman Long Block Engine 1973-1990

    How do you rate this product? *

      1 star 2 stars 3 stars 4 stars 5 stars
    Value
    Quality
    Price

    Vehicle application fitments

    PartTypeYearMakeEngineSizeRotationFitment Notes
    Engine1973Mercruiser7.4LStandardN/A
    Engine1973Volvo7.4LStandardN/A
    Engine1973Crusader7.4LStandardN/A
    Engine1973Marine Power7.4LStandardN/A
    Engine1973Indmar7.4LStandardN/A
    Engine1973Pleasure Craft7.4LStandardN/A
    Engine1973Chris Craft7.4LStandardN/A
    Engine1973OMC7.4LStandardN/A
    Engine1973Chrysler7.4LStandardN/A
    Engine1973GM7.4LStandardN/A
    Engine1973Ford7.4LStandardN/A
    Engine1974Mercruiser7.4LStandardN/A
    Engine1974Volvo7.4LStandardN/A
    Engine1974Crusader7.4LStandardN/A
    Engine1974Marine Power7.4LStandardN/A
    Engine1974Indmar7.4LStandardN/A
    Engine1974Pleasure Craft7.4LStandardN/A
    Engine1974Chris Craft7.4LStandardN/A
    Engine1974OMC7.4LStandardN/A
    Engine1974Chrysler7.4LStandardN/A
    Engine1974GM7.4LStandardN/A
    Engine1974Ford7.4LStandardN/A
    Engine1975Mercruiser7.4LStandardN/A
    Engine1975Volvo7.4LStandardN/A
    Engine1975Crusader7.4LStandardN/A
    Engine1975Marine Power7.4LStandardN/A
    Engine1975Indmar7.4LStandardN/A
    Engine1975Pleasure Craft7.4LStandardN/A
    Engine1975Chris Craft7.4LStandardN/A
    Engine1975OMC7.4LStandardN/A
    Engine1975Chrysler7.4LStandardN/A
    Engine1975GM7.4LStandardN/A
    Engine1975Ford7.4LStandardN/A
    Engine1976Mercruiser7.4LStandardN/A
    Engine1976Volvo7.4LStandardN/A
    Engine1976Crusader7.4LStandardN/A
    Engine1976Marine Power7.4LStandardN/A
    Engine1976Indmar7.4LStandardN/A
    Engine1976Pleasure Craft7.4LStandardN/A
    Engine1976Chris Craft7.4LStandardN/A
    Engine1976OMC7.4LStandardN/A
    Engine1976Chrysler7.4LStandardN/A
    Engine1976GM7.4LStandardN/A
    Engine1976Ford7.4LStandardN/A
    Engine1977Mercruiser7.4LStandardN/A
    Engine1977Volvo7.4LStandardN/A
    Engine1977Crusader7.4LStandardN/A
    Engine1977Marine Power7.4LStandardN/A
    Engine1977Indmar7.4LStandardN/A
    Engine1977Pleasure Craft7.4LStandardN/A
    Engine1977Chris Craft7.4LStandardN/A
    Engine1977OMC7.4LStandardN/A
    Engine1977Chrysler7.4LStandardN/A
    Engine1977GM7.4LStandardN/A
    Engine1977Ford7.4LStandardN/A
    Engine1978Mercruiser7.4LStandardN/A
    Engine1978Volvo7.4LStandardN/A
    Engine1978Crusader7.4LStandardN/A
    Engine1978Marine Power7.4LStandardN/A
    Engine1978Indmar7.4LStandardN/A
    Engine1978Pleasure Craft7.4LStandardN/A
    Engine1978Chris Craft7.4LStandardN/A
    Engine1978OMC7.4LStandardN/A
    Engine1978Chrysler7.4LStandardN/A
    Engine1978GM7.4LStandardN/A
    Engine1978Ford7.4LStandardN/A
    Engine1979Mercruiser7.4LStandardN/A
    Engine1979Volvo7.4LStandardN/A
    Engine1979Crusader7.4LStandardN/A
    Engine1979Marine Power7.4LStandardN/A
    Engine1979Indmar7.4LStandardN/A
    Engine1979Pleasure Craft7.4LStandardN/A
    Engine1979Chris Craft7.4LStandardN/A
    Engine1979OMC7.4LStandardN/A
    Engine1979Chrysler7.4LStandardN/A
    Engine1979GM7.4LStandardN/A
    Engine1979Ford7.4LStandardN/A
    Engine1980Mercruiser7.4LStandardN/A
    Engine1980Volvo7.4LStandardN/A
    Engine1980Crusader7.4LStandardN/A
    Engine1980Marine Power7.4LStandardN/A
    Engine1980Indmar7.4LStandardN/A
    Engine1980Pleasure Craft7.4LStandardN/A
    Engine1980Chris Craft7.4LStandardN/A
    Engine1980OMC7.4LStandardN/A
    Engine1980Chrysler7.4LStandardN/A
    Engine1980GM7.4LStandardN/A
    Engine1980Ford7.4LStandardN/A
    Engine1981Mercruiser7.4LStandardN/A
    Engine1981Volvo7.4LStandardN/A
    Engine1981Crusader7.4LStandardN/A
    Engine1981Marine Power7.4LStandardN/A
    Engine1981Indmar7.4LStandardN/A
    Engine1981Pleasure Craft7.4LStandardN/A
    Engine1981Chris Craft7.4LStandardN/A
    Engine1981OMC7.4LStandardN/A
    Engine1981Chrysler7.4LStandardN/A
    Engine1981GM7.4LStandardN/A
    Engine1981Ford7.4LStandardN/A
    Engine1982Mercruiser7.4LStandardN/A
    Engine1982Volvo7.4LStandardN/A
    Engine1982Crusader7.4LStandardN/A
    Engine1982Marine Power7.4LStandardN/A
    Engine1982Indmar7.4LStandardN/A
    Engine1982Pleasure Craft7.4LStandardN/A
    Engine1982Chris Craft7.4LStandardN/A
    Engine1982OMC7.4LStandardN/A
    Engine1982Chrysler7.4LStandardN/A
    Engine1982GM7.4LStandardN/A
    Engine1982Ford7.4LStandardN/A
    Engine1983Mercruiser7.4LStandardN/A
    Engine1983Volvo7.4LStandardN/A
    Engine1983Crusader7.4LStandardN/A
    Engine1983Marine Power7.4LStandardN/A
    Engine1983Indmar7.4LStandardN/A
    Engine1983Pleasure Craft7.4LStandardN/A
    Engine1983Chris Craft7.4LStandardN/A
    Engine1983OMC7.4LStandardN/A
    Engine1983Chrysler7.4LStandardN/A
    Engine1983GM7.4LStandardN/A
    Engine1983Ford7.4LStandardN/A
    Engine1984Mercruiser7.4LStandardN/A
    Engine1984Volvo7.4LStandardN/A
    Engine1984Crusader7.4LStandardN/A
    Engine1984Marine Power7.4LStandardN/A
    Engine1984Indmar7.4LStandardN/A
    Engine1984Pleasure Craft7.4LStandardN/A
    Engine1984Chris Craft7.4LStandardN/A
    Engine1984OMC7.4LStandardN/A
    Engine1984Chrysler7.4LStandardN/A
    Engine1984GM7.4LStandardN/A
    Engine1984Ford7.4LStandardN/A
    Engine1985Mercruiser7.4LStandardN/A
    Engine1985Volvo7.4LStandardN/A
    Engine1985Crusader7.4LStandardN/A
    Engine1985Marine Power7.4LStandardN/A
    Engine1985Indmar7.4LStandardN/A
    Engine1985Pleasure Craft7.4LStandardN/A
    Engine1985Chris Craft7.4LStandardN/A
    Engine1985OMC7.4LStandardN/A
    Engine1985Chrysler7.4LStandardN/A
    Engine1985GM7.4LStandardN/A
    Engine1985Ford7.4LStandardN/A
    Engine1986Mercruiser7.4LStandardN/A
    Engine1986Volvo7.4LStandardN/A
    Engine1986Crusader7.4LStandardN/A
    Engine1986Marine Power7.4LStandardN/A
    Engine1986Indmar7.4LStandardN/A
    Engine1986Pleasure Craft7.4LStandardN/A
    Engine1986Chris Craft7.4LStandardN/A
    Engine1986OMC7.4LStandardN/A
    Engine1986Chrysler7.4LStandardN/A
    Engine1986GM7.4LStandardN/A
    Engine1986Ford7.4LStandardN/A
    Engine1987Mercruiser7.4LStandardN/A
    Engine1987Volvo7.4LStandardN/A
    Engine1987Crusader7.4LStandardN/A
    Engine1987Marine Power7.4LStandardN/A
    Engine1987Indmar7.4LStandardN/A
    Engine1987Pleasure Craft7.4LStandardN/A
    Engine1987Chris Craft7.4LStandardN/A
    Engine1987OMC7.4LStandardN/A
    Engine1987Chrysler7.4LStandardN/A
    Engine1987GM7.4LStandardN/A
    Engine1987Ford7.4LStandardN/A
    Engine1988Mercruiser7.4LStandardN/A
    Engine1988Volvo7.4LStandardN/A
    Engine1988Crusader7.4LStandardN/A
    Engine1988Marine Power7.4LStandardN/A
    Engine1988Indmar7.4LStandardN/A
    Engine1988Pleasure Craft7.4LStandardN/A
    Engine1988Chris Craft7.4LStandardN/A
    Engine1988OMC7.4LStandardN/A
    Engine1988Chrysler7.4LStandardN/A
    Engine1988GM7.4LStandardN/A
    Engine1988Ford7.4LStandardN/A
    Engine1989Mercruiser7.4LStandardN/A
    Engine1989Volvo7.4LStandardN/A
    Engine1989Crusader7.4LStandardN/A
    Engine1989Marine Power7.4LStandardN/A
    Engine1989Indmar7.4LStandardN/A
    Engine1989Pleasure Craft7.4LStandardN/A
    Engine1989Chris Craft7.4LStandardN/A
    Engine1989OMC7.4LStandardN/A
    Engine1989Chrysler7.4LStandardN/A
    Engine1989GM7.4LStandardN/A
    Engine1989Ford7.4LStandardN/A
    Engine1990Mercruiser7.4LStandardN/A
    Engine1990Volvo7.4LStandardN/A
    Engine1990Crusader7.4LStandardN/A
    Engine1990Marine Power7.4LStandardN/A
    Engine1990Indmar7.4LStandardN/A
    Engine1990Pleasure Craft7.4LStandardN/A
    Engine1990Chris Craft7.4LStandardN/A
    Engine1990OMC7.4LStandardN/A
    Engine1990Chrysler7.4LStandardN/A
    Engine1990GM7.4LStandardN/A
    Engine1990Ford7.4LStandardN/A