SP350/375 TURN-KEY - 375HP

A Complete Engine Package in a Single Crate!

Chevrolet Performance’s all-new SP350/375 uses new-casting Fast Burn cylinder heads equipped with LS-style beehive valve springs for greater high-rpm performance. It’s rated at 375 horsepower.

The new, lightweight aluminum cylinder head casting is based on the proven Fast Burn design, with large intake runners and 2.00/1.55-inch valves. New beehive-style valve springs enable greater high-rpm performance and durability. They allow the SP350/375 to rev higher to make the most of every cubic inch of air drawn through it.

The SP350/375 is built with a brand-new block with four-bolt mains, along with a forged steel crankshaft, an aggressive hydraulic roller camshaft and durable, high-silicon pistons. Unique valve covers distinguish this new crate engine at a glance, too – along with Chevy “bow tie” insignias in the ends of the cylinder heads that let everyone know you’ve got the latest Chevrolet Performance hardware under the hood.

The Turn Key engine package includes;  distributor, carburetor and balancer installed. The starter, fuel pump air conditioning pump, alternator, front-end accessory drive kit and more are also included.

SP350/375 Turn-Key Tech specs

Engine Type: Chevy Small Block V8

Horse Power: 375

Torque: 405

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: 93 Octane

Ignition Timing: 36° Total at 4,000 rpm

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 manual 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