SP350/357 Base Chevrolet Crate Engine

350/357 Base Crate Engine

P/N 19420881

357 hp @ 5,500 rpm / 407 lb.-ft. @ 4,000 rpm

350/357 Base Tech Specs:
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 10243070): Nodular Iron
Connecting Rods (P/N 10108688): Powdered metal
Pistons (P/N 88894280): Cast aluminum
Intake Manifold (P/N 12676887): Dual plane
Camshaft Type (P/N 12677151): Hydraulic roller
Valve Lift (in): 0.473 intake / 0.473 exhaust
Camshaft Duration (@.050 in): 215° intake / 223° exhaust
Cylinder Heads: (P/N 12558060) Cast iron; as cast with 64cc chambers
Valve Size (in): 1.940 intake / 1.500 exhaust
Compression Ratio: 9.0:1 nominal
Rocker Arms (P/N 10089648): Stamped steel
Rocker Arm Ratio: 1.5:1
Recommended Fuel: Premium pump
Ignition Timing: 32º Total @ 4,000 rpm
Maximum Recommended rpm: 5,600
Balanced: External

For more complete versions of this crate engine, see the GM Performance SP350/357 Deluxe P/N 19367082 and the SP350/357 Turn Key P/N 19367084.

Installation Notes:

• Use the Holley 670-cfm 4-barrel carburetor P/N 19170092 to achieve the listed horsepower and torque
• Requires intake manifold, carburetor, distributor, spark plug wires and water pump to complete assembly
• Requires feed line from fuel pump to carburetor
• Requires externally balanced flexplate or flywheel for manual transmission.
• Designed for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine applications

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

Replaces P/N: 19367080 19420870 19431612 and