SP350/385 Base Chevrolet Crate Engine


  • 385 hp @ 5,600 rpm/405 lb.-ft. @ 3,600 rpm
  • High-flow Aluminum Cylinder Heads
  • Hydraulic Roller Camshaft
  • Forged Steel Crankshaft

Have your engine dyno tested by one of our professional engine builders to ensure everything is properly broken in. We can dyno your engine with your components to make sure everything is working harmoniously before shipping you the whole assembly drained and ready to install.

Shipping is free, but there is a delivery fee for residential addresses.

SKU: 19433039 Categories: , Tag:

SP350/385 Base Crate Engine

P/N 19433039

385 hp @ 5,600 rpm / 405 lb.-ft. @ 3,600 rpm

SP350/385 Base Tech Specs:
Engine Type: Chevy Small-Block V-8
Displacement (cu in): 350
Bore x Stroke (in): 4.000 x 3.480
Block, P/N 10243870: Cast-iron with 4-bolt main caps
Crankshaft, P/N 12670965: Forged steel, shot peened
Connecting Rods (P/N 10108688): Powdered metal
Pistons (P/N 10159436): Hypereutectic aluminum
Intake Manifold (P/N 12366573): Dual plane
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 19300955): Fast Burn aluminum; 62cc 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 pump
Ignition Timing: 36º Total @ 4,000 rpm
Maximum Recommended rpm: 5,800
Balanced: External
Flexplate (P/N 14088765): 12.750″

This Chevrolet Performance Crate Engine includes a 24-Month or 50,000-Mile/80,000-Kilometer Limited Warranty

Recommended Transmissions: Hydra-Matic 4L65-E Four-Speed Automatic P/N 19260380 or T56 Super Magnum Six-Speed Manual P/N 19329795

Installation Notes:

  • Use the Holley 770-cfm 4-barrel carburetor P/N 19170093 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
  • Some assembly and minor engine tuning required
  • Not intended for marine applications
Weight 483 lbs


19333157, 19417624, 19417781, 19432101

SP350/385 Base Crate Engine

19433039 Chevrolet Crate Motor

The Foundation for a High-Revving 350 Small Block!

The new Chevrolet Performance SP350/385 Base crate engine incorporates modern technologies such as a beehive-type valve springs to take the classic 350 Small Block to new levels of high-rpm performance ? without sacrificing the signature torque that has made it the benchmark of V-8 engines for nearly half a century.

Building on the strength and power of legendary Small Block engines like the ZZ4, GM’s engineers upped the ante with proven Fast Burn aluminum cylinder heads, LT-1 style pistons and new valvetrain components.

The Chevy SP350 Base crate engine kit includes the dual-plane aluminum intake manifold, distributor, water pump, damper and flexplate.

This part replaces old P/N 19333157 and 19417624.

Dyno Chart

Click here to download installation information.

Chevrolet Performance Crate Engines include a 24-month or 50,000-mile (80,000 kilometer) limited warranty.


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Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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