Product Description
The ATK HP89CBLK Chevrolet 350ci Complete Crate Engine is a high-performance small-block V8 engineered for automotive enthusiasts, restoration professionals, performance builders, and classic Chevrolet owners seeking an impressive combination of horsepower, torque, durability, and traditional American V8 performance.
Producing 390 horsepower and 420 lb-ft of torque, this complete crate engine provides substantial performance for compatible Chevrolet-based automotive projects. Its proven 350 cubic-inch small-block architecture combines dependable engine construction with high-performance internal components and carefully selected supporting equipment.
At the heart of the ATK HP89CBLK is a four-bolt-main Chevrolet small-block engine configuration featuring a hydraulic roller camshaft, performance aluminum cylinder heads, hypereutectic pistons, and a 10.0:1 compression ratio.
The engine’s ATK high-performance aluminum cylinder heads are designed to support improved airflow, while the hydraulic roller camshaft and compatible valvetrain components contribute to strong engine response and the advertised power output.
This complete engine package includes a Quick Fuel 680 CFM four-barrel carburetor, dual-plane intake manifold, HEI distributor, mechanical fuel pump, spark plugs, ignition wires, air cleaner, and other essential engine-mounted components.
The HP89CBLK features a distinctive black finish, including black powder-coated aluminum valve covers, creating a clean appearance suited to classic Chevrolet restorations and performance-oriented engine bays.
Its traditional Chevrolet small-block architecture makes it suitable for a variety of compatible classic-car and custom vehicle projects, although fitment depends on chassis clearance, mounting points, transmission compatibility, cooling-system requirements, exhaust configuration, and local emissions regulations.
Whether selected for a classic Chevrolet restoration, muscle-car project, or performance vehicle build, the ATK HP89CBLK 350ci V8 Complete Engine offers an attractive combination of 390HP performance, substantial torque, premium engine components, and comprehensive assembled-engine equipment.
Key Features
390 Horsepower Performance
Engineered to produce 390HP, providing strong naturally aspirated V8 performance for compatible automotive applications.
420 lb-ft of Torque
Delivers an advertised 420 lb-ft of torque, supporting responsive acceleration and substantial low-to-midrange performance.
Chevrolet 350ci Small Block V8
Features the classic Chevrolet 350 cubic-inch engine architecture favored for restoration and performance projects.
High-Performance Aluminum Cylinder Heads
Equipped with ATK aluminum cylinder heads featuring performance-oriented intake and exhaust valve dimensions.
Hydraulic Roller Camshaft
Utilizes a hydraulic roller camshaft designed for the engine’s high-performance configuration.
10.0:1 Compression Ratio
Features hypereutectic pistons and a 10.0:1 compression ratio to support its performance characteristics.
Quick Fuel 680 CFM Carburetor
Includes a Quick Fuel four-barrel carburetor with vacuum secondaries and an electric choke.
High-Performance Intake Manifold
Features an ATK dual-plane intake manifold matched to the engine’s carbureted configuration.
Complete Engine Package
Includes major fuel, ignition, intake, and engine-mounted components, reducing the number of separate components required for a compatible installation.
Black Performance Finish
Black engine components and Chevrolet-embossed valve covers provide a distinctive completed-engine appearance.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | ATK High Performance |
| Model | HP89CBLK |
| Engine Type | Chevrolet Small Block V8 |
| Displacement | 350ci |
| Horsepower | 390 HP |
| Torque | 420 lb-ft |
| Engine Block | OE Roller Block |
| Main Bearings | 4-Bolt Main |
| Rear Main Seal | One-Piece |
| Block Generation | 1996–2000 OE Roller Block |
| Bore | 4.040 inches |
| Stroke | 3.480 inches |
| Compression Ratio | 10.0:1 |
| Crankshaft | OE Reground |
| Connecting Rods | OE Powder Metal, 5.7 Inches |
| Pistons | Hypereutectic |
| Piston Rings | Moly |
| Camshaft Type | Hydraulic Roller |
| Cam Duration @ .050 | 220° Intake / 224° Exhaust |
| Valve Lift | .528″ Intake / .536″ Exhaust |
| Lobe Separation Angle | 110° |
| Timing Chain | Double Roller |
| Cylinder Head Material | Aluminum |
| Intake Valve Diameter | 2.020 Inches |
| Exhaust Valve Diameter | 1.600 Inches |
| Rocker Arms | Billet Aluminum Roller, 1.6 Ratio |
| Oil Pan | Rear Sump, 5 Quart |
| Oil Pump | Melling Standard Volume |
| Intake Manifold | ATK Dual Plane |
| Carburetor | Quick Fuel 680 CFM |
| Distributor | Black HEI |
| Fuel Pump | Holley Mechanical |
| Water Pump | OE Long Water Pump |
| Engine Finish | Black |
| Product Configuration | Complete Crate Engine |
Engine Block / Internal Configuration
| Component | Details |
|---|---|
| Engine Architecture | Chevrolet Small Block V8 |
| Engine Displacement | 350ci |
| Engine Block | Four-Bolt Main OE Roller Block |
| Bore × Stroke | 4.040″ × 3.480″ |
| Crankshaft | Reground OE Crankshaft |
| Connecting Rods | 5.7″ Powder Metal |
| Pistons | Hypereutectic |
| Compression Ratio | 10.0:1 |
| Piston Rings | Moly |
| Timing Assembly | Double Roller Timing Chain |
Cylinder Head / Valvetrain Configuration
| Component | Details |
|---|---|
| Cylinder Heads | ATK High-Performance Aluminum |
| Intake Valves | 2.020 Inches |
| Exhaust Valves | 1.600 Inches |
| Camshaft | Hydraulic Roller |
| Cam Duration | 220° / 224° @ .050 |
| Cam Lift | .528″ / .536″ |
| Rocker Arms | Billet Aluminum Roller |
| Rocker Ratio | 1.6:1 |
| Lobe Separation | 110° |
The high-performance cylinder heads and hydraulic roller valvetrain form an important part of the HP89CBLK engine’s 390HP performance package.
Fuel / Intake Configuration
| Component | Details |
|---|---|
| Fuel System | Carbureted |
| Carburetor | Quick Fuel HR-680 |
| Carburetor Capacity | 680 CFM |
| Carburetor Secondary Operation | Vacuum Secondary |
| Choke | Electric |
| Intake Manifold | ATK Dual Plane |
| Fuel Pump | Holley Mechanical 110 GPH |
| Fuel Line | Dual-Inlet Stainless AN Hose |
| Air Cleaner | 14″ × 3″ Super Flow System |
| Air Filter | Washable Filter |
Ignition / Electrical Configuration
| Component | Details |
|---|---|
| Ignition System | HEI |
| Distributor | Black HEI Distributor |
| Distributor Gear | Iron |
| Spark Plugs | Autolite 3923 |
| Spark Plug Wires | 8 mm |
| Ignition Compatibility | Appropriate Chevrolet V8 Ignition Configuration |
Cooling / Lubrication Configuration
| Component | Details |
|---|---|
| Water Pump | OE Long Water Pump |
| Thermostat Housing | Chrome |
| Thermostat | 180°F |
| Oil Pump | Melling Standard Volume |
| Oil Pan | Rear Sump |
| Oil Pan Capacity | 5 Quart |
| Maintenance | Follow ATK Engine Documentation |
What’s Included
| Included Component | Details |
|---|---|
| ATK HP89CBLK Complete Engine | 1 Unit |
| Chevrolet 350ci V8 Engine Assembly | Included |
| High-Performance Aluminum Cylinder Heads | Installed |
| Hydraulic Roller Camshaft | Installed |
| ATK Dual-Plane Intake Manifold | Included |
| Quick Fuel 680 CFM Carburetor | Included |
| Black HEI Distributor | Included |
| Holley Mechanical Fuel Pump | Included |
| Spark Plugs | Included |
| Spark Plug Wires | Included |
| Black Chevrolet-Embossed Valve Covers | Included |
| Air Cleaner Assembly | Included |
| Oil Pan and Oil Pump | Included |
| Water Pump | Included |
| Thermostat Housing | Included |
Vehicle / Installation Compatibility
The ATK HP89CBLK is intended for properly compatible Chevrolet small-block V8 applications and custom performance projects.
| Application | Compatibility Considerations |
|---|---|
| Classic Chevrolet Cars | Engine Mounting, Clearance and Transmission Matching |
| Chevrolet Muscle Cars | Performance Drivetrain Compatibility |
| Classic Chevrolet Trucks | Chassis, Cooling and Exhaust Compatibility |
| Custom Automotive Projects | Suitable Small-Block Chevrolet Configuration |
| Restoration Projects | Application-Specific Fitment Verification |
| Performance Builds | Supporting Drivetrain and Engine-Bay Requirements |
Important: This engine is not a universal direct-fit replacement. Its rear-sump oil pan is unsuitable for certain vehicle configurations, including some Chevelles, Corvettes, and early Chevy II applications. Emissions-controlled vehicle use may also be restricted.
Ideal Applications
Classic Chevrolet Restoration: Suitable for approved restoration projects requiring a performance-oriented small-block Chevrolet V8.
Muscle-Car Projects: A suitable option for classic American performance vehicles with compatible Chevrolet engine mounting and drivetrain equipment.
Custom Vehicle Builds: Provides a complete performance engine foundation for professionally planned automotive projects.
Classic Truck Restoration: Useful for compatible Chevrolet truck applications where installation requirements are satisfied.
Automotive Performance Workshops: Suitable for professional engine installation and restoration services.
Product Advantages
The ATK HP89CBLK offers a comprehensive engine package built around recognized Chevrolet small-block architecture.
With 390HP, 420 lb-ft of torque, aluminum cylinder heads, a hydraulic roller camshaft, premium fuel-system components, and a complete black-finished engine assembly, this crate engine provides substantial value for enthusiasts seeking a powerful, assembled Chevrolet V8.
The complete configuration also reduces the need to individually source many major engine-mounted accessories.
Safety & Installation Notice
Professional automotive installation is recommended. Verify chassis, engine mounts, transmission, cooling system, exhaust, fuel delivery, electrical requirements, and emissions compliance before purchase.
This performance engine is not represented as emissions-legal for pollution-controlled street vehicles. Vehicle application and local legal requirements must be checked.
Warranty Information
2-Year Limited Manufacturer Warranty
Warranty eligibility, installation requirements, break-in conditions, exclusions, and claims are governed by ATK’s official warranty terms.
Additional retailer coverage, if offered, should be documented separately.
Product Highlights
ATK HP89CBLK Complete Crate Engine Chevrolet 350ci Small Block V8 390 Horsepower 420 lb-ft Torque 10.0:1 Compression Ratio High-Performance Aluminum Cylinder Heads Hydraulic Roller Camshaft Quick Fuel 680 CFM Carburetor ATK Dual-Plane Intake Manifold Black Chevrolet-Embossed Valve Covers Complete Performance Engine Configuration Ideal for Compatible Classic Chevrolet Projects
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