Building on the strength and power of its predecessors, Chevrolet Performance engineers have upped the ante with a revised cylinder head design, new valvetrain components, and more to create the SP350/385 Base—a 385-horsepower 350 with loads of low-end torque. In fact, the SP350/385 Base Small-Block engine produces at least 405 lb-ft of torque by only 3600 rpm for a thrilling feeling of immediate performance.
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, as the egg-shaped springs have less reciprocating mass in motion, require less spring pressure for greater valve control, and handle valvetrain stresses more efficiently.
As with all of Chevrolet Performance’s Small-Block crate engines, the SP350/385 Base is built with a brand-new block with four-bolt mains. It also features 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.
The base crate engine package includes an aluminum intake manifold, distributor, water pump, damper, flexplate, and more.
Part Number: 19333157
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 (@0.050 in.): 208° intake / 221° exhaust
Cylinder Heads (P/N 19300955): Fast Burn aluminum; 62-cc chambers
Valve Size (in.): 2.000 intake / 1.550 exhaust
Compression Ratio: 9.6:1 nominal
Rocker Arms (P/N 10089648): Stamped steel
Rocker Arm Ratio: 1.5:1
Recommended Fuel: Premium
Maximum Recommended rpm: 5800
Find everything from the vital data about your engine’s capabilities to how to install it into your build.
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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.
The Manufacturer's Suggested Retail Price excludes tax, shipping and installation.