ATK GM 454 Big Block 525 HP HP451PC Stage 3 Engine
ATK High Performance HP451PC GM 454 525 HP Stage 3 Long Block Specs
| Brand | ATK High Performance Engines |
| Engine Model | HP451PC |
| Part Type | Crate Engines |
| Product Line | ATK High Performance GM 454 525 HP Stage 3 Long Block Crate Engines |
| UPC | 653517515798 |
| Crate Engine Family | Chevy Big Block |
| Engine Displacement | 7.4L / 454 |
| Compression Ratio | 9.9:1 |
| Cylinder Head Material | Aluminum |
| Engine Block Material | Cast Iron |
| Assembled | Yes |
| Engine Balance | External |
| 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 | Yes |
| 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 | Yes |
| Spark Plug Wires Included | Yes |
| Computer Included | No |
| Wiring Harness Included | No |
| Supercharger Included | No |
| Warranty Info | 1 Year |
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