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ZZ5 350 Base GM Crate Engine

Brand: Chevrolet Performance

Part Number: 19301293

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ZZ5 350 Base Crate Engine

400 hp @ 5,600 rpm / 400 lb.-ft. @ 3,500 rpm

 

A New 'ZZ' Legend

Building on the strength and power of the legendary ZZ4 Small-Block, our engineers upped the ante with a revised cylinder head design, new valvetrain components and more to create the all-new ZZ5 – a 400-horsepower 350 with loads of low-end torque. In fact, the new ZZ5 produces at least 300 lb.-ft. of torque by only 1,500 rpm, for a thrilling feeling of immediate performance.

We start the assembly with a new block featuring strong four-bolt main caps, along with a forged steel crankshaft and durable high-silicon aluminum pistons. We also use lightweight aluminum cylinder head castings based on the proven Fast Burn design, but with LS-style “beehive” valve springs that enable greater high-rpm performance and durability.

The ZZ5 350 Base crate engine kit includes the intake manifold, distributor, water pump, damper and flexplate. A four-barrel carburetor and additional components are required to finish the assembly – all available from Chevrolet Performance.

 

ZZ5 350 Base Tech Specs:
Part Number: 19301293
Engine Type: Chevy Small-Block V-8
Displacement (cu in): 350
Bore x Stroke (in): 4.000 x 3.480
Block (P/N 10105123): Cast-iron with 4-bolt main caps
Crankshaft (P/N 12556307): Forged steel
Connecting Rods (P/N 10108688): Powdered metal
Pistons (P/N 10159436): Hypereutectic aluminum
Camshaft Type (P/N 10185071): Hydraulic roller
Camshaft Lift (in): .474 intake / .510 exhaust
Camshaft Duration (@.050 in): 208° intake / 221° exhaust
Cylinder Heads (P/N 19300955): Fast Burn aluminum; 62cc chambers
Valve Size (in): 2.000 intake / 1.550 exhaust
Compression Ratio: 9.72:1 nominal
Rocker Arms (P/N 10089648): Stamped steel
Rocker Arm Ratio: 1.5:1
Recommended Fuel: 92 octane
Ignition Timing: Base 10° BTDC, 32° Total
Maximum Recommended rpm: 5800
Balanced: External

 

Installation Notes:
• Comes with 12.750" externally balanced 153-tooth automatic transmission flexplate. Change to externally balanced flywheel for normal transmission applications.
• Requires fuel line from fuel pump to carburetor
• Designed for pre-1976 street vehicles or any off-road vehicle
• Some assembly and minor engine tuning required
• Designed for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine application

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