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ZZ5 Base Engine

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ZZ5 Base Engine GM Performance Parts
    Parts #: 19301293

    Parts #19301293

    400 hp @ 5,600 rpm 400 lb.-ft. @ 3,500 rpm

    All-New ZZ5 and Updated ZZ383 Crate Engines Pull Harder with New Fast Burn Heads and Beehive Valvetrain

    By the way: You can spot the new crate engines at a glance, thanks to new Bowtie insignias on the ends of the heads – and all-new valve covers.

    When it comes to Small-Block power, Chevrolet Performance's engineers keep finding new ways to add muscle to the iconic American V-8. For 2014, they've developed new Fast Burn cylinder head castings that incorporate beehive-style valve springs and complementing valvetrain components. The result is greater high-rpm range and durability – and power. The heads are the stars of an all-new ZZ5 350 crate engine and an updated version of the big-torque ZZ383 stroker engine.

    The ZZ5 is rated at an impressive 400 horsepower, which is more than any small block 350 offered in a production car. The ZZ383 is rated at 450 horsepower. Both engines complement those high-rpm horses with low-rpm torque – at least 300 lb.-ft. by only 1,500 rpm – for that unmistakable feeling of immediate power that comes only from the Small-Block.

    Chevrolet Performance offers the engines in Base, Deluxe and Turn-Key systems, allowing you to select the crate engine package that fits your budget and project plans.

    The next chapter in the 'ZZ' crate engine legacy

    Building on the strength and power of the legendary ZZ4 Small-Block, Chevrolet Performance engineers have upped the ante with a revised cylinder head design, new valvetrain components and more to create the all-new ZZ5 – a 400-horsepower 350 with loads of low-end torque. In fact, the new ZZ5 produces at least 300 lb.-ft. of torque by only 1,500 rpm, for a thrilling feeling of immediate performance.

    The new, lightweight aluminum cylinder head casting is based on the proven Fast Burn design, with large intake runners and 2.00/1.55-inch valves. New beehive-style valve springs enable greater high-rpm performance and durability, as the egg-shaped springs have less reciprocating mass in motion, require less spring pressure for greater valve control and handle valvetrain stresses more efficiently.

    As with all of Chevrolet Performance's Small-Block crate engines, the ZZ5 is built with a brand-new block with four-bolt mains. It also features a forged steel crankshaft, an aggressive hydraulic roller camshaft and durable, high-silicon pistons. Unique valve covers distinguish this new crate engine at a glance, too.

    The Base crate engine package includes an aluminum intake manifold, distributor, water pump, damper, flexplate and more.


    • Comes with 12.750 externally balanced 153-tooth automatic transmission flexplate. Change to externally balanced flywheel for normal transmission applications.
    • Requires fuel line from fuel pump to carburetor
    • Fuel pump pressure is pre-set; fuel pressure regulato not required
    • Designed for pre-1976 street vehicles or any off-road vehicle
    • Some assembly and minor engine tuning required
    • Designed for pre-1976 street vehicles or any off-road vehicle
    • Not intended for marine application

    Part Number: 19301293
    Engine Type: Chevy Small-Block V-8
    Displacement (cu in): 350
    Bore x Stroke (in): 4.000 x 3.480
    Block (P/N 10105123): Cast-iron with 4-bolt main caps
    Crankshaft (P/N 12556307): Forged steel
    Connecting Rods (P/N 10108688): Powdered metal
    Pistons (P/N 10159436): Hypereutectic aluminum
    Camshaft Type (P/N 10185071): Hydraulic roller
    Camshaft Lift (in): .474 intake / .510 exhaust
    Camshaft Duration (@.050 in): 208° intake / 221° exhaust
    Cylinder Heads (P/N 19300955): Fast Burn aluminum; 62cc chambers
    Valve Size (in): 2.000 intake / 1.550 exhaust
    Compression Ratio: 9.72:1 nominal
    Rocker Arms (P/N 10089648): Stamped steel
    Rocker Arm Ratio: 1.5:1
    Recommended Fuel: 92 octane
    Ignition Timing: Base 10° BTDC, 32° Total
    Maximum Recommended rpm: 5800
    Balanced: External

    NOTE: Distributor with melonized steel gear MUST be used with long-blocks and Partial engines with steel camshafts, or engine damage will occur. CALL FOR PRICE

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