Small-Block Crate Engines - ZZ6 Turn-Key

Developed with contemporary technologies, including a high-rpm valvetrain, the ZZ6 Turn-Key offers a modern twist on the classic 350 Small-Block, delivering more than 400 horsepower and more than 400 lb.-ft. of torque!

The ZZ6 uses updated Fast Burn cylinder heads with beehive-style valve springs inspired by the LS engine family–a feature that enhances high-rpm capability to support more power than any factory-produced 350 engine ever installed in a Chevrolet production vehicle. The unique, tapered shape of the valve spring allows for the use of a smaller spring retainer, which reduces the reciprocating mass of the valvetrain, resulting in better valve dynamics.

The turn-key engine package includes the carburetor, distinctive valve covers and matching air cleaner, distributor, front-end accessory kit, starter, and spark plug wires (some installation required).

INSTALLATION NOTES

• Comes with 12.750" externally balanced 153-tooth automatic transmission flexplate. Requires externally balanced flywheel for manual transmission.
• Requires fuel line to carburetor
• Some assembly and minor engine tuning required
• Not intended for marine applications

TECH SPECS

• Part Number: 19433042
• Engine Type: Chevy Small-Block
• Displacement (cu in): 350
• Bore x Stroke (in): 4.000 x 3.48
• Block (P/N 19431835): Cast iron with 4-bolt mains
• Crankshaft (P/N 12670965): Forged steel, shot peened
• Connecting Rods (P/N 10108688): Forged powder metal, shot peened
• Pistons (P/N 10159436): Hypereutectic aluminum
• Intake Manifold (P/N 12496822): Single plane aluminum
• Carburetor (P/N 19420445): 770 cfm Holley
• Camshaft Type (P/N 10185071): Steel hydraulic roller
• Valve Lift (in): .474 intake/.510 exhaust
• Camshaft Duration (@.050 in): 208° intake / 221° exhaust
• Cylinder Heads (P/N 19417592): Fast Burn aluminum; 62cc chambers
• Valve Size (in): 2.000 intake / 1.550 exhaust
• Compression Ratio: 9.7:1
• Rocker Arms (P/N 19432297): Aluminum roller style
• Rocker Arm Ratio: 1.5:1
• Recommended Fuel: Premium pump
• Distributor (P/N 19432312): HEI
• Ignition timing: 36º Total @ 4,000 rpm
• Maximum Recommended rpm: 5,800 rpm
• Balanced: External
• Flexplate (P/N 14088765): 12.750"

NOTE: Distributor with melonized steel gear MUST be used with long-blocks and partial engines with steel camshafts, or engine damage will occur.