GM Small Block 350 Turn-Key Crate Motor 357pk

An Affordable Small-Block Performer!

With 357 horsepower and more than 400 lb.-ft. of torque, the Chevrolet Performance 350/357 Turn-Key offers a great combination of performance and value.

Modern valvetrain technology is the key to its high-revving capability, pushing power to 5,500 rpm, while economical iron cylinder heads deliver excellent airflow and help make this potent crate engine more affordable. They’re matched with a friction-reducing roller camshaft that helps optimize performance across the rpm band.

The rest of 350/357 Turn-Key is built with strong, all-new components, including a brand-new four-bolt block, a durable nodular iron crankshaft and more. As one of our Turn-Key crate engines, it also includes an aluminum intake manifold, Holley four-barrel carburetor and HEI distributor and balancer installed, while a starter, water pump and front-end accessory drive kit—including an air conditioning compressor, alternator and more—are also included (installation required).

Chevrolet Performance also offers the SP350/357 Base crate engine, as well as the SP350/357 Deluxe version - see our webshop.

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 ): Forged steel

Connecting Rods (P/N 10108688): Powdered metal

Pistons (P/N 88894280): Cast aluminum

Camshaft Type (P/N 12677151): Hydraulic roller

Camshaft Lift (in): 0.473" intake / 0.473" exhaust

Camshaft Duration (@.050 in): 215° intake / 223° exhaust

Cylinder Heads: 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 12367346): 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

Flexplate (P/N 14088765): 12.750"

Intake Manifold (P/N 12676887): Dual Plane

INSTALLATION NOTES

• Front-End Accessory Drive included but not installed for shipment

• Comes with 12.750" externally balanced 153-tooth automatic transmission flexplate. Requires externally balanced flywheel for manual transmission.

• Requires fuel supply line from fuel pump to carburetor

• Designed for pre-1976 street vehicles or any off-road vehicle

• Not intended for marine applications