SP383 EFI Deluxe Crate Engine


  • 450hp @ 5,800 rpm/436 lb.-ft. @ 4,800 rpm
  • Forged Steel Crank in a Four-bolt Main Block
  • Fast Burn Aluminum Cylinder Heads
  • Port-style Injection System
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.

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.

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SP383 EFI Deluxe Crate Engine

P/N 19432112

450 hp @ 5,800 rpm / 436 lb.-ft. @ 4,800 rpm

SP383 EFI Tech Specs:
Engine Type: Chevy Small-Block V-8
Displacement (cu in): 383
Bore x Stroke (in): 4.005 x 3.800
Block (P/N 88962516): Cast iron with 4-bolt main caps
Crankshaft (P/N 12489436): Forged steel
Connecting Rods (P/N 19355754): Heavy-duty forged steel
Pistons (P/N 12499103): Hypereutectic aluminum
Camshaft Type (P/N 10185071): Steel 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: 9.72:1 (nominal)
Rocker Arms (P/N 19210724): Aluminum roller style
Rocker Arm Ratio: 1.5:1
Recommended Fuel: Premium pump
Ignition Timing: 36° Total at 4,000 rpm
Maximum Recommended rpm: 6,000
Balanced: External
Flexplate (P/N 14088765): 12.750″

Installation Notes:

  • Crate engine kit includes pre-programmed, self-learning control system
  • Come with a 12.750″ externally balanced, 153-tooth automatic transmission flexplate. An externally balanced flywheel is required for manual transmission applications.
  • Not intended for marine applications

SP383 EFI Deluxe Crate Engine

19418640 Chevrolet Motor

Classic Small-Block Stroker with Modern EFI

It’s hard to beat the classic 383 “stroker” for Small-Block torque, but Chevy Performance engineers found a way. They matched it with the driving convenience of electronic fuel injection!

Rated at 450 horsepower and 436 lb.-ft. of torque, the SP383 EFI also features a high-performance roller camshaft and lightweight aluminum, Fast Burn-style cylinder heads with modern valvetrain technology that includes beehive-type valve springs and aluminum roller rocker arms.

The SP383 EFI incorporates a port-style injection system, with the injectors plumbed in a carburetor-style intake manifold, and the throttle body mounted in the conventional position of the carburetor, which allows for a traditional air cleaner and a classic appearance. It’s a vintage look that offers contemporary drivability and strong performance.

The Chevrolet Performance SP383 EFI Deluxe kit includes the distributor, damper and flexplate, ready to install. The SP383 EFI Turn-Key kit is also available (P/N 19419199).


Click here to download installation information.

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