19420880 Features:

• Displacement (cu in): 350
• Bore x Stroke (in): 4.000 x 3.480
• Block: Cast-iron with 4-bolt main caps
• Crankshaft: Forged steel
• Connecting Rods: Powdered metal steel
• Pistons: Cast-aluminum
• Camshaft Type: Hydraulic flat tappet
• Camshaft Lift (in): .435 intake / .460 exhaust
• Cylinder Heads): Vortec iron; 64cc chambers
• Valve Size (in): 1.940 intake / 1.500 exhaust
• Compression Ratio: 9.0:1 nominal
• Rocker Arms): Stamped steel
• Rocker Arm Ratio: 1.5:1
• Water Pump: Cast iron, long-style
• Flexplate: 12.750"
• Ignition Timing: 32-degree Total @ 4,000 rpm
• Maximum Recommended rpm: 5,100
• Balanced: External
• Intake Manifold: Dual Plane

INSTALLATION NOTES:

• Includes 12.750" externally balanced 153-tooth automatic transmission flexplate - Requires externally balanced flywheel for manual transmission
• Right-side oil dipstick
• Requires fuel line from the fuel pump to carburetor
• Fuel pump pressure is pre-set; fuel pressure regulator not required
• Some assembly and minor engine tuning required
• Designed for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine applications
• Recommends premium fuel
• Chevrolet Performance Front Accessory Drive Kits include a Reverse Rotation Water Pump

19433031 supersedes 19420880, 19431611

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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