Atk High Performance Gm 383 Vortec 390 Hp Stage 3 Long Block Crate Engines Hp33C
$3,000.00
The ATK High Performance GM 383 Vortec Stage 3 Long Block (HP33C) delivers 390 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 straightforward installation for street, mild performance, or restoration applications.
Condition: New
The GM 383 Vortec Stage 3 Long Block (Part #HP33C) is engineered for enthusiasts seeking enhanced performance with Vortec technology.
This Stage 3 long block features precision-engineered components, forged rotating assembly, Stage 3 camshaft, and upgraded internals, ideal for street, mild performance, and restoration projects.
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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383 C.I.D. (6.3L) Vortec V8 engine
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390 horsepower output
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Stage 3 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 383 Vortec Stage 3 long block
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390 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 | HP33C |
| Engine Type | V8, GM 383 Vortec |
| Configuration | Stage 3 Long Block Crate Engine |
| Displacement | 383 C.I.D. / 6.3L |
| Horsepower | 390 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 | 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 Melanie Cooper
by Putri Amelia