ZZ572/720R

Our Baddest , Most Powerful Big Block Engine is Ready for the Strip
A 10-second car is quick, but the ZZ572/720R could achieve that with a couple of its spark plugs left in the pits. 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!

ZZ572/720R DELUXE DYNO
Part Number:19201334
Engine Type: Chevy Tall Deck Big Block V8
Displacement (cu. in.): 572
Bore x Stroke (in.): 4.560 x 4.375
Block (P/N 19212195): Cast Iron with 4-Bolt Main Caps
Crankshaft (P/N 88961554): Forged Steel
Connecting Rods (P/N 19170198): Forged Steel, Shot Peened
Pistons (P/N 88963227): Forged Aluminum
Camshaft Type (P/N 24502611): 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

INSTALLATION NOTES

• Due to crate fitment, the carburetor is shipped in a separate box and needs to be installed by an engine installer
• Clutch linkage boss is now drilled and tapped. When using cast-iron exhaust manifolds, lower head bolts may need to be replaced with bolts with shorter heads for clearance
• Requires addition of starter, ignition coil, and fuel pump (not included)
• Gen VI tall-deck block has machined mechanical fuel pump boss
• Comes with a 14" automatic transmission flexplate. Requires internally balanced flywheel for manual transmission applications 
• Designed for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine applications
• Big sticky slicks will help hook up this monster!

ZZ572 DELUXE Warranty Detail PDF

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