GM Big Block ZZ572 Base Crate Motor 620pk

=> 620 HP | 874,5 Nm

Proving the adage there’s no replacement for displacement, the ZZ572/620 is the ultimate expression of Chevrolet Performance’s engineering capability, wrapped up in a soul-stirring combination of performance and attitude. We build the ZZ572/620 with huge 4.560-inch bores and a 4.375-inch stroke to help it deliver 621 hp and a stunning 645 lb.-ft. of grunt!

Strength comes from a latest-generation tall-deck block casting with four-bolt main caps and an all-forged rotating assembly, while high-flow aluminum rectangular-port cylinder heads with massive 310cc intake passages, 118cc raised exhaust ports and 118cc combustion chambers process tremendous airflow. A hydraulic roller camshaft with incredible 0.632/0.632-inch lift and 254/264-degree duration specifications optimizes the airflow volume enabled by the large-port heads.

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 4-bolt main caps

Crankshaft (P/N 88961554): Forged steel

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

Pistons (P/N 88962925): Forged aluminum

Camshaft Type (P/N 19210721): Hydraulic roller

Camshaft Lift (in): .632 intake / .632 exhaust

Camshaft Duration (@.050 in): 254° intake / 264° exhaust

Cylinder Heads (P/N 19331429): Aluminum rectangular port, 118cc chambers

Valve Size (in): 2.250 intake / 1.88 exhaust; stainless steel

Compression Ratio: 9.6:1

Rocker Arms (P/N 19210726): Aluminum roller style

Rocker Arm Ratio: 1.7:1

Recommended Fuel: Premium pump

Ignition Timing: 36° Total at 4,000 rpm

Maximum Recommended rpm: 6,000

Balanced: Internal

INSTALLATION NOTES

• 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 and fuel pump (not included)

• Gen VI tall-deck block has machined mechanical fuel pump boss

• Designed for pre-1976 street vehicles or any off-road vehicle

• Not intended for marine applications