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ZZ572/720 Deluxe

ZZ572/720 Deluxe

SKU: 19331585

Our baddest, most powerful Big-Block racing engine is ready for the strip.


It is the king of all rat engines and is capable of pulling your bracket racer or heads-up challenger down the 1320 in the 9-second range.


The ZZ572/720R’s true value lies in its ready-to-run status when delivered. Rather than waiting weeks for a racing engine shop to build a custom combination, we deliver the ZZ572/720R fully assembled. Just bolt on the included Dominator-style 1150-cfm carburetor, along with a starter and fuel pump (not included), and you’re ready to go.


The ZZ572/720R is built with the best stuff we can find, including an all-forged rotating assembly, rectangular-port aluminum cylinder heads with 113-cc intake ports, and 2.25/1.88-inch valves. There’s also a solid roller camshaft with 0.714/0.714-inch lift.


If you’re building the ultimate dual-purpose car, the ZZ572/720R is suitable for limited forays on the street. It has a 12.0:1 compression ratio, so make sure you’ve got access to 110-octane gasoline before hitting the local cruise night.

  • Horsepower

    727 HP

  • Torque

    680 LB-FT

  • Tech Specs

    Engine Type: Chevy Tall Deck Big-Block V-8

    Displacement (cu. in.): 572

    Bore x Stroke (in.): 4.560 x 4.375

    Block (P/N 19212195): Cast-iron with four-bolt main caps

    Crankshaft (P/N 88961554): Forged steel

    Connecting Rods (P/N 88962926): Forged steel, shot peened

    Pistons (P/N 88963227): Forged aluminum

    Camshaft Type (P/N 19210722): Mechanical roller

    Camshaft Lift (in.): .714 intake / .714 exhaust

    Camshaft Duration (@.050 in.): 278° intake / 282° exhaust

    Cylinder Heads (P/N 88961160): Aluminum rectangular port, 118-cc chambers

    Valve Size (in.): 2.250 intake / 1.880 exhaust stainless steel

    Compression Ratio: 12:1

    Rocker Arms (P/N 12361323): Aluminum, roller style

    Rocker Arm Ratio: 1.7:1

    Distributor (P/N 10093387): Electronic ignition

    Carburetor (P/N 19170096): 1150-cfm Dominator

    Water Pump (P/N 19168602): Aluminum, short-style

    Spark Plugs and Wires: Included

    Recommended Fuel: 110-octane race gas

    Ignition Timing: Base 8° BTDC, 36° Total

    Maximum Recommended rpm: 6750

    Balanced: Internal

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