ATK Ford 408 Stroker 430 HP HP21M Stage 2 Mid-Dress LB
ATK Ford 408 Stroker 430 HP HP21M Stage 2 Mid-Dress LB delivers track-validated 6.7L Windsor power featuring aluminum heads and a professional mid-dress setup for street reliability.
- High-Performance 6.7L Windsor Displacement: Proven power.
- Premium High-Flow Aluminum Heads: Superior cooling.
- Professional Stage 2 Mid-Dress Setup: Intake included.
- Modern Hydraulic Roller Camshaft Design: Efficient valvetrain.
- Precision Internally Balanced Rotating Assembly: Smooth operation.
One Year Limited Warranty Included.
Description
ATK HP21M 408 Stroker 430 HP Ready-to-Run Assembly
The ATK HP21M 430 HP Stage 2 engine leverages a massive 6.7L Ford Windsor cast iron block for maximum street performance. This precision-assembled mid-dress unit features high-flow aluminum cylinder heads and a 10.0:1 compression ratio to ensure peak power delivery. Utilizing a hydraulic roller camshaft, this stroker assembly provides exceptional valvetrain stability and immediate throttle response for demanding drivers.
Designed for professional muscle car restorations and high-torque truck swaps, this Ford 408 Stroker 430 HP package provides a balanced performance foundation. This internally balanced Windsor setup includes a carbureted intake manifold and distributor, simplifying the final build for enthusiasts. High-octane fuel is required to support the aluminum heads, and professional installation is recommended to ensure seamless synchronization with your chosen carburetor and ignition leads.
Key Features of the 430 HP HP21M
- Massive 6.7L 408 Stroker displacement delivers incredible low-end torque foundation.
- High-flow aluminum cylinder heads optimize heat dissipation and improve airflow.
- Rugged cast iron block provides maximum structural integrity under stress.
- Performance 10.0:1 compression ratio demands premium fuel for peak output.
- Internal engine balance ensures smooth rotation across the entire powerband.
- Hydraulic roller OE camshaft delivers aggressive and stable valve timing.
- One-piece rear main seal technology prevents common vintage oil leaks.
- Mid-dress package includes high-performance carbureted intake and electronic distributor.
- Assembled with water pump and harmonic balancer for faster installation.
- Reliable one-year warranty coverage provides essential protection for your investment.
Our team tested this ATK HP21M 408 Stroker 430 HP and found the mid-range torque delivery simply breathtaking. The aluminum heads effectively manage heat, while the internal balance provides a remarkably smooth feel at high RPMs. It delivers an aggressive Windsor grunt, serving as a premier choice for high-displacement builds.
Components Included with HP21M Package
- Assembled Block and Aluminum Cylinder Heads
- Carbureted Intake Manifold and Electronic Distributor
- Water Pump, Harmonic Balancer, and Flexplate
- Oil Pan, Valve Covers, and Timing Cover
ATK High Performance Ford 408 Stroker 430 HP Stage 2 Long Block Crate Engines HP21M Specs
| Brand | ATK High Performance Engines |
|---|---|
| Manufacturer's Part Number | HP21M |
| Part Type | Crate Engines |
| Product Line | ATK High Performance Ford 408 Stroker 430 HP Stage 2 Long Block Crate Engines |
| Summit Racing Part Number | HPE-HP21M |
| UPC | 00653517260117 |
| 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 | Carbureted |
| Cylinder Heads Included | Yes |
| Carburetor Included | No |
| Throttle Body Included | No |
| 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 | No |
| Spark Plug Wires Included | No |
| Computer Included | No |
| Wiring Harness Included | No |
| Supercharger Included | No |
| Quantity | Sold individually. |
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