ATK Ford 408 Stroker 430 HP HP21C-EFI Stage 3 EFI Engine
ATK Ford 408 Stroker 430 HP HP21C-EFI Stage 3 EFI Engine utilizes elite fuel injection technology and aluminum heads to provide reliable 430 HP performance builds.
- Complete Stage 3 EFI: Computer included.
- Precision 6.7L Stroker Displacement: Increased torque.
- Modern Aluminum Head Design: Improved cooling.
- Ready-To-Run Complete Assembly: Simplified installation.
- Sustained High-RPM Engine Durability: Performance grade.
One Year Limited Warranty Included.
Description
ATK HP21C-EFI 408 Stroker 430 HP Turn-Key Performance Engine
The ATK HP21C-EFI 430 HP Stage 3 engine represents the pinnacle of 6.7L Ford Windsor power for the modern street. Built with a rugged cast iron block and high-flow aluminum cylinder heads, this assembly delivers an impressive 10.0:1 compression ratio for maximum dominance. Its hydraulic roller OE camshaft provides unmatched valvetrain stability while optimizing the native displacement of this precision-engineered stroker power plant.
Engineered for high-performance street-legal swaps and modern restorations, this Ford 408 Stroker 430 HP EFI assembly is designed to drop into classic chassis with ease. Unlike carbureted builds, this internally balanced Windsor setup includes a complete fuel injection system with a throttle body, computer, and wiring harness. We recommend professional integration of the included electronics to support the advanced fuel mapping requirements of this high-output 6.7L crate engine.
Performance Specifications: ATK HP21C-EFI 408 Stroker
- Massive 6.7L 408 Stroker displacement offers substantial low-end torque foundations.
- High-flow aluminum cylinder heads optimize heat management and airflow efficiency.
- Efficient 10.0:1 compression ratio demands premium fuel for maximum output.
- Modern hydraulic roller camshaft ensures aggressive yet stable valve timing.
- Internal engine balance provides smooth rotation throughout the entire RPM range.
- Complete EFI system includes throttle body, computer, and wiring harness.
- Integrated electronic ignition features a distributor with spark plugs and wires.
- Water pump and harmonic balancer significantly reduce engine installation time.
- One-piece rear main seal technology prevents traditional Ford Windsor oil leaks.
- Comprehensive 1-year warranty coverage provides essential protection for your investment.
Our team tested this ATK HP21C-EFI 408 Stroker 430 HP and found the throttle response phenomenal. The included fuel injection makes cold starts effortless and ensures a perfect air-fuel mixture across the power band. It delivers a solid, aggressive exhaust note with immediate acceleration that only a large-displacement stroker can provide.
Components Included with HP21C-EFI Package
- Assembled Engine Block and Aluminum Cylinder Heads
- Intake Manifold, Throttle Body, and Fuel Injection Electronics
- Engine Computer (ECU) and Complete Wiring Harness
- Distributor, Spark Plugs, and Ignition Wires
- Water Pump, Harmonic Balancer, and Flexplate
- Oil Pan, Valve Covers, and Timing Cover
ATK High Performance HP21C-EFI 408 Stroker 430 HP Stage 3 EFI Specs
| Brand | ATK High Performance Engines |
| Part Type | Crate Engines |
| Product Line | ATK High Performance Ford 408 Stroker 430 HP Stage 3 EFI Long Block Crate Engines |
| UPC | 653517517808 |
| Crate Engine Family | Ford Windsor |
| Actual Engine Displacement | 6.7L/408 |
| Crate Engine Cylinder Head Material | Aluminum |
| Engine Block Material | Cast iron |
| Advertised Compression Ratio | 10.0:1 |
| Assembled | Yes |
| Engine Balance | Internal |
| Cam Style | Hydraulic roller, OE roller |
| Rear Main Seal Style | 1-piece |
| Intake Manifold Included | Yes |
| Intake Manifold Style | Fuel Injection |
| Cylinder Heads Included | Yes |
| Carburetor Included | No |
| Throttle Body Included | Yes |
| Distributor Included | Yes |
| Oil Pan Included | Yes |
| Valve Covers Included | Yes |
| Timing Cover Included | Yes |
| Water Pump Included | Yes |
| Harmonic Balancer Included | Yes |
| Flexplate Included | Yes |
| Flywheel Included | No |
| Air Cleaner Included | No |
| Spark Plugs Included | Yes |
| Spark Plug Wires Included | Yes |
| Computer Included | Yes |
| Wiring Harness Included | Yes |
| Supercharger Included | No |
| Warranty Information | 1 Year |
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