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ZZ6 Deluxe

ZZ6 Deluxe

SKU: 19435444

Chevrolet Performance's new ZZ6 delivers more power than any 350 Small-Block ever installed in a production vehicle.


Rated at 405 hp and 406 lb.-ft. of torque, it derives its range-topping performance from unique, lightweight aluminum cylinder heads that enable optimal airflow at high rpm. The cylinder head casting is based on the proven Fast Burn design, with large intake runners and 2.00/1.55-inch valves. Beehive-style valve springs deliver greater high-rpm performance and durability. Their egg-shaped profiles have less reciprocating mass in motion, require less spring pressure for greater valve control and handle valvetrain stresses more efficiently. They allow the ZZ6 to rev higher to make the most of every cubic inch of air drawn through it. The ZZ6 also uses an aggressive hydraulic roller camshaft that supports the engine's high-rpm airflow capability while maintaining excellent low-speed drivability.


This Base crate engine kit includes the intake manifold, distributor, water pump, damper and flexplate - and the distinctive, racing-inspired valve covers that distinguish this crate engine as the latest in the ZZ legacy!

  • Horsepower

    405 HP


  • Torque

    406 LB-FT


  • Tech Specs

    Power: 405 HP @ 5600 RPM, 406 ft. lbs. of torque @ 4600 RPM
    Displacement: 350 CID, 5.7L
    Bore x Stroke: 4.00” x 3.48”
    Compression Ratio: 9.72:1
    Recommended Fuel: 92 Octane
    Block: Cast Iron, 1 piece rear seal, 4-bolt main caps
    Crankshaft: Forged Steel
    Connecting Rods: Powdered Metal Steel
    Pistons: Hypereutectic Aluminum
    Camshaft: Steel Hydraulic Roller Tappet
    Cam Lift: .474” Intake / .510” exhaust
    Cam Duration @ .050”: 208 deg. Intake / 221 deg. Exhaust
    Lobe Separation: 112 Degree
    Cylinder Heads: Dual Bolt Pattern Fast Burn Aluminum, 3/8” screw-in rocker studs
    Combustion Chamber: 62cc
    Valves: .200” Intake/ 1.55” Exhaust
    Rocker Arms: Aluminum Roller, 1.5:1 Ratio
    Valve Springs: LS Beehive 12625033
    Balance: External
    Maximum GM Recommended RPM: 5800
    GM Recommended Torque Converter 3000-3400 Stall
    Ignition Timing: Base 10 degrees BTDC, 34 degrees total @ 4000 RPM

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