ATK High Performance Chevy LM7 5.3L 385 HP Long BLock Crate Engines HP97

Buy Chevy LM7 5.3L 385 HP Long BLock Crate Engines HP97 Online

Boost your LS-powered build with the Chevy LM7 5.3L 385 HP Long BLock Crate Engines HP97, a high-performance ATK long block designed for 1999-2007 Chevy Truck LM7 applications and popular LS swap projects. Built around a seasoned OE LM7/5.3L iron block, this crate engine delivers 385 horsepower and 390 lb-ft of torque, giving your truck, hot rod, or custom build lm7 crate engine strong mid-to-upper rpm power and a noticeable performance idle.

The Chevy LM7 5.3L 385 HP Long BLock Crate Engines HP97 features a 323 cubic-inch displacement, 3.809 x 3.622-inch bore and stroke, OEM GM 24-tooth reluctor crankshaft, stock GM rods, hypereutectic pistons with 9.5:1 compression, moly rings, hydraulic roller lm7 crate motor camshaft, and OE aluminum cylinder heads. Its custom performance cam grind helps improve ls 6.0 crate engine throttle response and driving excitement while maintaining reliable LS-based durability.

For best results, ATK recommends headers, upgraded injectors, 91-octane fuel, and a chassis dyno tune. Whether you are replacing a tired engine or planning an LS swap, this HP97 long block offers dependable power, proven components, and serious upgrade 5.3 lm7 horsepower potential for Chevy enthusiasts. It is an excellent choice for drivers who want LS performance, rebuild 5.3 lm7 crate engine convenience, and a stronger foundation for street, strip, or custom projects with confidence today.

Product Specifications

• Product Name: ATK High Performance Chevy LM7 5.3L 385 HP Long BLock Crate Engines HP97
• Brand: ATK High Performance Engines
• Manufacturer Part Number: HP97
• Part Type: Crate Engine
• Product Line: ATK High Performance Chevy LM7 5.3L 385 HP Long BLock Crate Engines
• Crate Engine Family: Chevy LS
• Application: 1999-2007 Chevy Truck LM7 applications and LS swap projects
• Engine Displacement: 5.3L / 325 cubic inches
• Advertised Horsepower: 385+ HP
• Advertised Torque: 390+ lb-ft
• Block Material: GM 5.3L iron LM7 block
• Cylinder Head Material: Aluminum
• Cylinder Heads: OE aluminum 61.15cc, 1.89 / 1.55 valves
• Compression Ratio: 9.5:1
• Camshaft Style: Hydraulic roller camshaft
• Camshaft Specs: Custom grind
• Engine Balance: Internal
• Bore / Stroke: Up to 3.809 in. x 3.622 in.
• Crankshaft: OEM GM 3.622 in. stroke, internally balanced, 24-tooth reluctor wheel
• Connecting Rods: OE GM forged powder metal rods, 6.093 in.
• Pistons: Hypereutectic dish pistons
• Piston Rings: Moly rings
• Rear Main Seal Style: 1-piece
• Remanufactured: Yes
• Assembled: Yes
• Quantity: Sold individually
• Recommended Upgrades: Headers and upgraded injectors
• Tuning Requirement: Custom chassis dyno tune required

Product Benefits

• Strong LS-Based Power Output
• The Chevy LM7 5.3L 385 HP Long BLock Crate Engines HP97 delivers 385+ horsepower and 390+ lb-ft of torque, making it a powerful upgrade for truck builds, hot rods, and LS swap projects.
• Ideal for 1999-2007 Chevy Truck LM7 Applications
• This engine is designed as a performance replacement or upgrade for Chevy truck LM7 platforms and is also a strong choice for custom LS swap builds.
• Durable Iron Block Foundation
• The GM 5.3L iron LM7 block provides excellent strength and durability, giving the engine a dependable base for street and performance use.
• Lightweight Aluminum Cylinder Heads
• OE aluminum cylinder heads help improve airflow and performance while reducing weight compared to cast iron head designs.
• Performance Camshaft for Better Power
• The custom hydraulic roller camshaft helps produce strong mid-to-upper rpm power and gives the engine a noticeable performance idle.
• Reliable Internal Components
• Built with an OEM GM crankshaft, OE forged powder metal connecting rods, hypereutectic dish pistons, and moly rings, this crate engine is designed for dependable operation.
• Great for LS Swap Projects
• The HP97 long block gives builders a proven 5.3L LS platform with upgraded performance potential, making it suitable for hot rods, muscle cars, trucks, and custom builds.
• Ready for Performance Tuning
• With headers, upgraded injectors, 91-octane fuel, and a custom chassis dyno tune, this engine can deliver its best performance and drivability.
• Convenient Long Block Solution
• Because the engine comes assembled as a long block, it saves time compared with rebuilding an engine from the ground up.
• Trusted ATK Performance Quality
• Built by ATK High Performance Engines, the Chevy LM7 5.3L 385 HP Long BLock Crate Engines HP97 offers a reliable blend of LS performance, durability, and upgrade value.

What is the Chevy LM7 5.3L 385 HP Long BLock Crate Engines HP97 designed for?

The Chevy LM7 5.3L 385 HP Long BLock Crate Engines HP97 is designed as a performance upgrade for 1999-2007 Chevy Truck LM7 applications and LS swap projects.

What supporting parts are recommended for the Chevy LM7 5.3L 385 HP Long BLock Crate Engines HP97?

For optimal performance, headers, upgraded injectors, 91-octane fuel, and a chassis dyno tune are recommended.