SP350/385 BASE

385 HP @5,600 RPM / 405 LB-FT TORQUE @3,600 RPM
price: $7,447
part number: 19417781
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    A legendary foundation for performance 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: Cast-iron with 4-bolt main caps
    Crankshaft: Forged steel (shot peened)
    Connecting Rods: Powdered metal
    Pistons: Hypereutectic aluminum
    Camshaft Type: Hydraulic roller
    Camshaft Lift (in): .474 intake / .510 exhaust
    Camshaft Duration (@.050 in): 208° intake / 221° exhaust
    Cylinder Heads: Fast Burn aluminum; 62cc chambers
    Valve Size (in): 2.000 intake / 1.550 exhaust
    Compression Ratio: 9.6:1 nominal
    Rocker Arms: Stamped steel
    Rocker Arm Ratio: 1.5:1
    Recommended Fuel: Premium pump
    Ignition Timing: 36º Total @ 4,000 rpm
    Maximum Recommended rpm: 5,800
    Balanced: External
    Flexplate: 12.750"
    Intake Manifold: Dual Plane

    • Use the Holley 770-cfm 4-barrel carburetor to achieve the listed horsepower and torque
    • Requires four-barrel carburetor, spark plug wires and additional components to complete assembly
    • Comes with 12.750" externally balanced 153-tooth automatic transmission flexplate. Requires externally balanced flywheel for manual transmission.
    • 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
    • Not intended for marine applications

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