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Atk High Performance Chrysler 360 Magnum 320 Hp Stage 1 Long Block Crate Engines Hp73
$1,800.00
The ATK High Performance Chrysler 360 Magnum Stage 1 Long Block (HP73) delivers 320 horsepower of reliable performance for Chrysler, Dodge, and Mopar vehicles.
Fully assembled and factory-tested, this Stage 1 long block provides durability, consistent power, and a turnkey installation solution for street or restoration projects.
Condition: New
The Chrysler 360 Magnum Stage 1 Long Block (Part #HP73) is designed for enthusiasts seeking enhanced performance without compromising reliability.
Featuring precision-engineered components and a fully assembled long block, it is ideal for street, track, and restoration applications.
Included Components:
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Engine block
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Cylinder heads
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Camshaft and valve train
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Rotating assembly (crankshaft, rods, pistons)
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Oil pan
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Timing components
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Valve covers
Performance Overview:
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360 C.I.D. (5.9L) V8 Magnum engine
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320 horsepower output
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Stage 1 performance build
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Fully assembled long block for turnkey installation
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Compatible with Chrysler, Dodge, and Mopar vehicles
Key Features
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ATK High Performance Chrysler 360 Magnum Stage 1 long block
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320 horsepower output
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Fully assembled and factory-tested
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Includes all critical engine components for installation
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Engineered for street, track, and restoration builds
Key Technical Specifications
| Specification | Details |
|---|---|
| Brand | ATK High Performance |
| Part Number | HP73 |
| Engine Type | V8, Chrysler 360 Magnum |
| Configuration | Stage 1 Long Block Crate Engine |
| Displacement | 360 C.I.D. / 5.9L |
| Horsepower | 320 Hp |
| Torque | Check Manufacturer Specs |
| Block Material | Cast Iron |
| Cylinder Heads | Aluminum |
| Crankshaft | Forged Steel |
| Connecting Rods | Forged Steel |
| Pistons | Forged Aluminum |
| Camshaft Type | Stage 1 Performance Cam |
| Fuel System | Not Included |
| Fuel Type | Gasoline |
| Ignition System | Not Included |
| Cooling System | Water-Cooled |
| Condition | Brand New / Factory-Tested |
| Country of Origin | United States |
| Included Components | Block, heads, camshaft, rotating assembly, valve train, oil pan, timing components, valve covers |
| Recommended Use | Chrysler, Dodge, Mopar vehicles, street builds, performance restorations |
Compliance & Disclaimer
Horsepower and torque ratings should be verified with ATK High Performance specifications.
Professional installation and proper break-in procedures are recommended.
Not certified for emissions-controlled vehicles in all regions.
Questions & Answers
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Return Policy
FourToolz accepts returns within 30 days of delivery for items that are unused, in their original packaging, and include all accessories.
Customers are responsible for return shipping costs unless the product is defective or incorrectly shipped.
For detailed information, please review our full Return Policy or contact us at sales@fourtoolz.com.






