Chevrolet Performance SP383 EFI Stroker Crate Engine - 450 HP/436 TQ - Electronic Fuel Injection - Classic Appearance

Fits Chevrolet Performance SP383 EFI Stroker Crate Engine - 450 HP/436 TQ - Electronic Fuel Injection - Classic Appearance.

Please refer to manufacturer specifications for complete compatibility information.

19433037 Chevrolet Performance HT383E Crate Engine Replaces 19420885, 19420877, 19355721, 19332531, 19417374, 19418656

EFI Stroker Power with Classic Appearance

The SP383 EFI combines the proven 383 "stroker" combination with contemporary electronic fuel injection convenience. This turnkey engine delivers 450 horsepower and incorporates a port-style injection system with traditional carburettor-style appearance.

Specifications:

• Part Number: 19420885 (and related variants)
• Engine Type: Small-Block Stroker V-8
• Displacement: 383 cu in
• Power: 450 horsepower
• Torque: 436 lb-ft
• Compression Ratio: 9.72:1

EFI System Design:

• Port-style injection system with injectors plumbed in carburettor-style intake manifold
• Throttle body mounted in conventional carburettor position
• Allows for traditional air cleaner and classic appearance
• Multi-Port Fuel Injection (MPFI) technology
• Computer-controlled for precise fuel delivery

Engine Construction:

• Cast iron block with enhanced strength
• Forged steel crankshaft for stroker displacement
• Heavy-duty connecting rods
• Aluminum pistons optimized for stroker configuration

Cylinder Head Technology:

• Aluminum cylinder heads for weight savings and heat dissipation
• High-flow port design
• Stainless steel valves for durability
• Optimized combustion chamber design

Turnkey Assembly Includes:

• Distributor and harmonic balancer installed
• Throttle body and fuel injection system
• Starter motor
• Air conditioning pump mounting
• Alternator
• Single-belt front-end accessory drive system
• Complete wiring harness and computer control system

Installation Features:

• 12.750" externally balanced 153-tooth flexplate included
• Manual transmission applications require externally balanced flywheel
• Ready to run with minimal additional components required
• Professional installation recommended for EFI system setup

Fuel Requirements:

• Designed for premium pump gasoline
• EFI system optimizes fuel delivery for performance and efficiency
• Computer-controlled air/fuel ratios

Application Notes:

• Perfect for classic car upgrades wanting modern EFI convenience
• Traditional appearance maintains classic aesthetic
• Not intended for marine applications
• Emissions-legal in many applications (verify local requirements)

Kit includes all necessary components. Please refer to manufacturer specifications for detailed package contents.