It’s hard to beat the classic 383 “stroker” for Small-Block torque, but Chevrolet Performance engineers found away. 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.

Our SP383 EFI Deluxe kit includes the distributor, damper and flexplate, ready to install.

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

Notes: Engine does not come with pictured water pump and spark plug wires. Purchase 12361051 if needed

TECH SPECS
Part Number: 19433045
Engine Type: Chevy Small-Block V-8
Displacement (cu in): 383
Bore x Stroke (in): 4.005 x 3.800
Block (P/N 19432109): Cast iron with 4-bolt main caps
Crankshaft (P/N 12489436): Forged steel
Connecting Rods (P/N 19355754): Heavy-dut  forged steel
Pistons (P/N 12499103): Hypereutectic aluminum
Camshaft Type (P/N 19210723): Steel hydraulic roller
Valve Lift (in): .509 int ake / .528 exhaust
Camshaft Duration (@.050 in): 220° int ake / 2 30° exhaust
Cylinder Heads (P/N 19417592): Fast Burn aluminum; 62cc chambers
Valve Size (in): 2.000 int ake / 1.550 exhaust
Compression Ratio: 9.72:1 (nominal)
Rocker Arms (P/N 19432297): 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"