Chevrolet Performance’s SP383 EFI Turn Key-kit offers the strong pull of the proven 383 “stroker” combination and the contemporary convenience of electronic fuel injection, delivered with most of the engine accessories required to get the engine running in your project vehicle!
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 rated at 450 horsepower and a stout 436 lb.-ft. of torque.
Our comprehensive Turn-Key assembly is delivered with the distributor and damper installed. The throttle body, starter, fuel pump, air conditioning pump, alternator, single-belt front-end accessory drive system and more are also included in the kit.

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.

INSTALLATION NOTES
• Crate engine kit includes pre-programmed, self-learning control system
• Come with a 12.750" externally balanced, 153-tooth automatic transmission flexplate.

SP383 EFI Turn-Key Tech Specs
Part Number: 19433046
Engine Type: Chevy Small-Block V8
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.): 208º intake / 221º exhaust
Cylinder Heads (P/N 19300955): Fast Burn aluminum; 62-cc 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 4000 rpm
Maximum Recommended rpm: 6000
Balanced: External
Flexplate (P/N 14088765): 12.750"

DETAILS