Small-Block Crate Engines - SP350/385 Turn-Key

Chevrolet Performance’s SP350/385 Turn-Key uses aluminum Fast Burn cylinder heads equipped with LS-style beehive valve springs for greater high-rpm performance that helps this power-dense engine offer 385 horsepower and 405 lb.-ft. of torque.

The lightweight cylinder head casting features large, 210cc intake runners, with the beehive valve springs matched with steel retainers, machined steel spring seats and split key locks. The beehive-style valve springs allow the SP350/385 to rev higher to make the most of every cubic inch of air drawn through it.

Like all of our Small-Block crate engines, this one is built with a brand-new block with four-bolt mains and it features a hydraulic roller camshaft. The turn-key engine package includes the distributor, carburetor, and balancer installed. The front-end accessory kit, chrome air cleaner, starter, and spark plug wires are also included (some installation required).

INsTALLATION NOTES

• SP350/385 Base Engine (P/N 19433039) is also available
• 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
• Some assembly and minor engine tuning required
• Not intended for marine applications

TECH SPECS

• Part Number: 19433040
• Engine Type: Chevy Small-Block V-8
• Displacement (cu in): 350
• Bore x Stroke (in): 4.000 x 3.480
• Block (P/N 19431835): Cast iron with 4-bolt main caps
• Crankshaft (P/N 12670965): Forged steel, shot peened
• Connecting Rods (P/N 10108688): Forged powder metal, shot peened
• Pistons (P/N 10159436): Hypereutectic aluminum
• Intake Manifold (P/N 12366573): Dual-plane aluminum
• Camshaft Type (P/N 10185071): Hydraulic roller
• Valve Lift (in): .474 intake / .510 exhaust
• Camshaft Duration (@.050 in): 208° intake / 221° exhaust
• Cylinder Heads (P/N 19417592): Fast Burn aluminum; 62cc chambers
• Valve Size (in): 2.000 intake / 1.550 exhaust
• Compression Ratio: 9.7:1
• Rocker Arms (P/N 10089648): 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 (P/N 14088765): 12.750"

NOTE: Distributor with melonized steel gear MUST be used with long-blocks and partial engines with steelcamshafts, or engine damage will occur