Atk High Performance Gm 350 345 Hp Stage 2 Long Block Crate Engines Hp98M
$1,800.00
The ATK High Performance GM 350 Stage 2 Long Block (HP98M) delivers 345 horsepower of reliable performance for Chevrolet vehicles, classic muscle cars, and street builds.
Fully assembled and factory-tested, this long block ensures consistent power, durability, and easy installation, perfect for street, mild performance, or restoration projects.
Condition: New
The GM 350 Stage 2 Long Block (Part #HP98M) is engineered for enthusiasts seeking enhanced performance and reliability.
This Stage 2 long block features precision-engineered components, forged rotating assembly, Stage 2 camshaft, and upgraded internals, providing a balanced mix of power, efficiency, and durability.
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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350 C.I.D. (5.7L) Small Block V8 engine
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345 horsepower output
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Stage 2 performance build
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Fully assembled long block for turnkey installation
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Compatible with Chevrolet vehicles, street builds, and muscle cars
Key Features
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ATK High Performance GM 350 Stage 2 long block
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345 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, mild performance, and restoration builds
Key Technical Specifications
| Specification | Details |
|---|---|
| Brand | ATK High Performance |
| Part Number | HP98M |
| Engine Type | V8, GM 350 Small Block |
| Configuration | Stage 2 Long Block Crate Engine |
| Displacement | 350 C.I.D. / 5.7L |
| Horsepower | 345 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 2 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 | Chevrolet vehicles, street builds, muscle cars, mild performance upgrades, restoration projects |
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.
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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.
by Liam Anderson
by Sari Handayani