ZZ 572/620 Tech Specs

Block Part Number:

25534368

Block Type:

Cast iron with 4-bolt main caps

Bore x stroke (in):

4.560 x 4.375

Camshaft duration (@.050 in)

254 degree intake / 264 degree exhaust

Camshaft lift (in):

.632 intake / .632 exhaust

Camshaft Part Number:

88961557

Camshaft type:

Hydraulic roller

Carburetor Part Number:

88961560

Carburetor Size:

850 cfm

Compression ratio:

9.6:1

Connecting Rod Part Number:

88962926

Connecting rods Type:

Forged steel, shot peened

Crankshaft Part Number:

88961554

Crankshaft Type:

Forged steel

Cylinder head Part Number:

12499255

Cylinder head Type:

Aluminum rectangular port, 118 cc chambers

Displacement (cu in):

572

Distributor Part Number:

88961867

Distributor Type:

HEI

Engine Name:

ZZ572/620 Deluxe:

Engine type:

Chevy big-block V-8

Flexplate Part Number:

12561217

Flexplate Size:

14"

Ignition timing:

36 degree total @ 4000 rpm

Maximum rpm:

6000

Piston Part Number:

88962925

Pistons Type:

Forged aluminum

Recommended fuel:

92 octane

Rocker arm ratio:

1.7:1

Rocker arms Part Number:

12361323

Rocker arms Type:

Aluminum roller style

Spark plugs and wires:

Included

Valve size (in):

2.25 intake / 1.88 exhaust; stainless steel

Water Pump Part Number:

14058915

Water pump Type:

Aluminum, short-style