Crusader Marine Engines

    Crusader builds smooth, reliable gas inboard engines for cruisers and express boats. Repower with a used, rebuilt or remanufactured Crusader for far less than new — 6-month warranty, nationwide freight.

    • Gas inboard specialist (V-drive & straight shaft)
    • 5.7 (350), 8.1 (454/496) and MPI versions
    • Cruiser, express & houseboat power
    • 6-month warranty, extended available
    • Core exchange & nationwide freight

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    Crusader marine engines have powered inboard cruisers, express boats and houseboats for decades with a reputation for smooth, quiet, dependable operation. Built on GM small-block and big-block architecture and fully marinized by Crusader, these gas inboards are a favorite for twin-engine cruisers. When one needs replacing, a used, rebuilt or remanufactured Crusader is a far better value than a new dealer engine.

    Crusaders are straight-inboard engines — they sit in the hull and turn a shaft (often through a V-drive) to a fixed prop, rather than using a sterndrive. They are marinized with marine cooling, water-cooled exhaust manifolds and risers, ignition-protected electrical components and marine calibrations, so they are never interchangeable with an automotive engine. We match the block, rotation, transmission and cooling to your installation.

    Crusader Small-Block and Big-Block Gas Engines

    Crusader's lineup is built around GM-based V8s: the 5.7L (350) small-block for mid-size cruisers and the big-block 7.4L (454) and 8.1L (496) for larger and twin-engine boats. Earlier engines used carburetors, while later models adopted MPI (multi-port fuel injection) with the Crusader/Captain's Call electronics for cleaner running and better economy.

    Whether you have a single or twin installation, we confirm the exact displacement, carb vs MPI, rotation and transmission so your replacement matches your engine beds, shaft and controls.

    • 5.7L (350) small-block V8
    • 7.4L (454) big-block V8
    • 8.1L (496) big-block V8
    • Carbureted and MPI fuel-injected versions

    Inboard, V-Drive and Twin-Engine Installations

    Because Crusaders are inboards, rotation and transmission matter — twin-engine boats use a left-hand and a right-hand turning engine so the props counter-rotate. We confirm engine rotation, the marine transmission (such as a Velvet Drive or ZF gear) and the V-drive or straight-shaft setup so your replacement drops into the existing alignment.

    If you are replacing one engine of a twin pair, matching the surviving engine's specification keeps the boat balanced. We help you spec the correct mate so handling and performance stay consistent.

    • Straight-shaft and V-drive inboard layouts
    • Left-hand / right-hand rotation for twins
    • Velvet Drive and ZF marine transmissions
    • Single and twin-engine cruisers & houseboats

    Used, Rebuilt or Remanufactured Crusader

    A used running Crusader take-out is the most economical choice when your transmission and accessories are good. Rebuilt engines renew worn parts; remanufactured engines are machined back to factory spec with new internals for near-new reliability. Choose a long block to transfer your marine accessories, or a complete drop-in engine for a faster repower.

    All Crusader engines carry a 6-month warranty with extended coverage available, ship nationwide by freight, and are typically sold on core exchange. Tell us your model, displacement, rotation, transmission and cooling for a free quote.

    Crusader Marine Engine Specs

    TypeGas inboard (straight-shaft & V-drive)
    FuelGasoline
    Engine families5.7 (350), 7.4 (454), 8.1 (496) V8
    Fuel deliveryCarbureted & MPI fuel injection
    Power range~270 to 425+ HP
    TransmissionsVelvet Drive, ZF marine gears
    Common boatsCruisers, express boats, houseboats
    Warranty6-month standard, extended available

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