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ZZ6 Base

ZZ6 Base

SKU: 19433041

The next chapter of Small-Block performance


In 1955, Chevrolet debuted the very first Small-Block V-8. Since then, the innovative, power-dense engine has gone on to power generations of vehicles, dominate racetracks, and change the course of automotive history.

Sixty years later, we’re proud to introduce the newest member of the Small-Block family, the ZZ6 Base crate engine. Delivering an impressive 405 horsepower and 406 lb-ft of torque at 4600 rpm, the ZZ6 Base is the latest expression of Chevrolet Performance’s engineering prowess.

Featuring fast burn aluminum cylinder heads, single-plane intake, aluminum roller rocker arms, and 770-cfm carburetor, the ZZ6 Base builds on the last six decades of legendary performance and innovation, and advances the Small-Block legacy.  

  • Horsepower

    405 HP

  • Torque

    406 LB-FT

  • Tech Specs

    Engine Type: Chevy Small-Block V-8

    Displacement (cu. in.): 350

    Bore x Stroke (in.): 4.000 x 3.48

    Block (P/N 10105123): Cast iron with 4-bolt mains

    Crankshaft (P/N 12556307): Forged steel

    Connecting Rods (P/N 10108688): Forged powdered metal

    Pistons (P/N 10159436): Hypereutectic aluminum

    Camshaft Type (P/N 10185071): Steel hydraulic roller

    Camshaft Lift (in.):  .474 intakes/.510 exhaust

    Camshaft Duration (@0.050 in.): 208° intake / 221° exhaust

    Cylinder Heads (P/N 19300955): Fast burn aluminum – 62-cc chambers

    Valve Size (in.): 2.000 intake / 1.550 exhaust

    Compression Ratio: 9.72:1 nominal

    Rocker Arms (P/N 19210724): Aluminum roller style

    Rocker Arm Ratio: 1.5:1

    Recommended Fuel: Premium

    Ignition Timing: 36° total @ 4000 rpm

    Maximum Recommended rpm: 5600

    Balanced: External

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