Chevrolet Performance 19433045 383 Small Block 450 HP Engine
Description
Chevrolet Performance 383 Small Block 450 HP Crate Engine
The Chevrolet Performance 19433045 represents a significant engineering milestone in small-block V-8 architecture, specifically optimized for enthusiasts requiring a high-performance 383 Stroker solution with modern fuel precision. This robust unit delivers 450 HP and 436 lb.-ft. of torque to ensure volumetric efficiency is maximized across a 6,000 RPM range, providing a professional-grade power delivery while the 4-bolt main cast iron block allows for reliable operation during intensive performance cycles throughout the USA.
Engineered for maximum versatility, this 383 Stroker is a premier choice for muscle car restorations and classic GM truck builds, fitting seamlessly into 1967-1981 Camaros, 1968-1974 Novas, and C10 pickup projects. Its traditional Small-Block footprint also makes it ideal for Street Rods and Restomod conversions where owners demand modern EFI reliability without modifying the engine bay of vintage Corvettes or Chevelles. The inclusion of a self-learning ECU ensures that this high-torque powertrain integrates perfectly with both street-driven cruisers and aggressive pro-touring builds with total mechanical accuracy.
Key Features of Chevrolet Performance 19433045
- Stroker 383 cu in produces aggressive 450 HP output
- Fast Burn aluminum heads optimize high-velocity combustion airflow
- Multi-port EFI ensures precise fuel delivery via carburetor-mount body
- Self-learning ECU manages engine mapping without manual tuning
- Forged steel crankshaft supports high-strength 6,000 RPM operation
- Hydraulic roller camshaft provides smooth broad power band delivery
- Cast iron 4-bolt main block ensures superior structural integrity
- Hypereutectic aluminum pistons improve thermal expansion and durability
- Aluminum roller rockers reduce friction for enhanced valve longevity
- Integrated ignition system simplifies modern powertrain conversion setups
Chevrolet Performance 19433045 Included With:
- 153-tooth 12.750 inch flexplate for automatic transmissions
- Complete distributor ignition system for immediate timing control
- Pre-programmed self-learning ECU and engine controller unit
- Fast Burn aluminum cylinder heads with 62cc chambers
- Heavy-duty forged steel connecting rods and crankshaft assembly
Chevrolet Performance 19433045 Crate Engine Specs
| Horsepower | 450 hp @ 5,800 rpm |
| Torque | 436 lb.-ft. @ 4,800 rpm |
| Max Recommended RPM | 6,000 |
| Recommended Fuel | Premium Pump (91-94 Octane) |
| Engine Type | Chevy Small-Block V-8 (SB) |
| Displacement | 383 cu. in. |
| Bore x Stroke | 4.005 in x 3.800 in |
| Compression Ratio | 9.72:1 (Nominal) |
| Block Material | Cast Iron (4-bolt main caps) |
| Crankshaft | Forged Steel |
| Connecting Rods | Heavy-Duty Forged Steel |
| Pistons | Hypereutectic Aluminum |
| Camshaft Type | Steel Hydraulic Roller |
| Intake/Exhaust Lift | 0.474 in / 0.510 in |
| Intake Duration (@ 0.050 in) | 208° |
| Exhaust Duration (@ 0.050 in) | 221° |
| Cylinder Heads | Fast Burn Aluminum (62 cc chambers) |
| Rocker Arm Ratio | 1.5:1 (Aluminum Roller-Style) |
| Fuel System | Multi-Port Electronic Fuel Injection (MPFI) |
| Ignition Timing | 36° Total @ 4,000 RPM |
| Throttle Body | Mounted in Carburetor Position |
| Control System | Pre-programmed, Self-learning ECU/Controller |
| Flexplate | Yes (12.750 in, 153-tooth, for Automatic Transmissions) |
| Ignition | Distributor Included |
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