350 Small Block Engine – Chevy Performance SP350/385 Turn-Key Crate Engine 19433040


  • 385 hp @ 5,600 rpm/405 lb.-ft. @ 3,600 rpm
  • High-flow Aluminum Cylinder Heads
  • Hydraulic Roller Camshaft
  • Forged Steel Crankshaft
Due to world events we are working with our manufacturers every day to ship and receive parts. If the part you are looking for is time sensitive please give our team a call at 855-806-1147 before ordering to ensure it's availability.

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

SP350/385 Turn-Key Crate Engine

Our SP350/385 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!

The 385 hp rating of the engine is complemented by excellent low-rpm torque, with the SP350/385 generating 405 lb.-ft. of torque at 3,600 rpm. It’s all due to the high-flow, lightweight aluminum cylinder heads. This engine features:

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

What’s Included

  • Fully GM assembled long block
  • Chrome Steel Valve Cover with Chevy Bowtie Logo
  • Chrome Air Cleaner
  • Oil pump, pick-up and oil pan
  • Aluminum Performance Intake
  • HEI Distributor, Plug Wires, Looms and Plugs
  • 12-3/4″ Auto Trans Flexplate
  • Harmonic Balancer
  • Front timing cover
  • Oil Filter and Adapter
  • Passenger Side RH Oil Dipstick and Tube

Important Notes

  • Comes with 12.750″ externally balanced 153-tooth automatic transmission flexplate. Requires externally balanced flywheel for manual transmission.
  • Requires fuel pump and line to carburetor
  • Some assembly and minor engine tuning required
  • Not intended for marine applications
  • 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. Dyno Testing Service (+$649.00)
Weight 607 lbs



SP350/385 Tech Specs

  • P/N: 19432102
  • Power: 385 hp @ 5,600 rpm / 405 lb.-ft. @ 3,600 rpm
  • 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: Forged steel, shot peened (P/N 12670965)
  • Connecting Rods: Powdered metal (P/N 10108688)
  • Pistons: Hypereutectic aluminum (P/N 10159436)
  • Intake Manifold: Dual plane (P/N 12366573)
  • Camshaft Type: Hydraulic roller (P/N 10185071)
  • Valve Lift (in): .474 intake / .510 exhaust
  • Camshaft Duration (@.050 in): 208° intake / 221° exhaust
  • Cylinder Heads: Fast Burn aluminum; 62cc chambers (P/N 19300955)
  • Valve Size (in): 2.000 intake / 1.550 exhaust
  • Compression Ratio: 9.6:1 nominal
  • Rocker Arms: Stamped steel (P/N 10089648)
  • Rocker Arm Ratio: 1.5:1
  • Recommended Fuel: Premium pump
  • Ignition Timing:I 36º Total @ 4,000 rpm
  • Maximum Recommended rpm: 5,800
  • Balanced: External
  • Flexplate: 12.750″ (P/N 14088765)
  • Weight: 607lbs
  • Recommended Transmissions: Hydra-Matic 4L65-E Four-Speed Automatic P/N 19260380 or T56 Super Magnum Six-Speed Manual P/N 19329795

Dyno Chart

Click here to download installation information.

Chevrolet Performance Crate Engines carry a 24 Month or 50,000 mile warranty (whichever comes first) when installed by a qualified independent service center. Chevrolet Performance Crate Engines also come with a 30 day start up warranty (parts only).

There are some additional limitations on the warranty – please see the official GM warranty documentation for more information.


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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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