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Atk High Performance Gm 350 Vortec 290 Hp Stage 3 Long Block Crate Engines Hp99C
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$1,800.00
The ATK High Performance GM 350 Vortec Stage 3 Long Block (HP99C) delivers 290 horsepower of reliable and high-performance power for GM vehicles equipped with Vortec-style engines.
Fully assembled and factory-tested, this crate engine ensures durability, consistent performance, and easy installation for street, track, or restoration projects.
Condition: New
The GM 350 Vortec Stage 3 Long Block (Part #HP99C) is engineered for enthusiasts seeking enhanced performance with dependable reliability.
This Stage 3 long block features precision components, robust construction, and turnkey assembly, making it ideal for street, track, or classic GM vehicle builds.
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) V8 Vortec engine
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290 horsepower output
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Stage 3 high-performance build
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Fully assembled long block for turnkey installation
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Compatible with Chevrolet and GM vehicles equipped with Vortec engines
Key Features
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ATK High Performance GM 350 Vortec Stage 3 long block
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290 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 | HP99C |
| Engine Type | V8, GM 350 Vortec |
| Configuration | Stage 3 Long Block Crate Engine |
| Displacement | 350 C.I.D. / 5.7L |
| Horsepower | 290 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 3 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 | GM Vortec-equipped 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.
