ATK LM7-LB-3 Stage 1 LM7/LS1 383 Long Block Crate Engine – 515+ HP

The ATK LM7-LB-3 is a remanufactured GM LM7/LS1-based 383 (6.3L) Stage 1 long block rated 515+ HP, with 10.3:1 compression, aluminum heads, hydraulic roller cam and internal balance. Only the cylinder heads are included; other components are not included.

Specifications

• Brand: ATK High Performance Engines
• Part / Model Number: LM7-LB-3
• Actual Engine Displacement: 6.3L/383
• Advertised Compression Ratio: 10.3:1
• Assembled: Yes
• Cam Style: Hydraulic roller
• Crate Engine Cylinder Head Material: Aluminum
• Crate Engine Family: Chevy LS
• Engine Balance: Internal
• Engine Block Material: Cast iron
• Part Type: Crate Engines
• Product Line: ATK High Performance GM LM7/LS1 383CI 515+ HP Stage 1 Long Block Crate Engines
• Rear Main Seal Style: 1-piece
• Remanufactured: Yes

Included: Cylinder Heads.

Actual Engine Displacement: 6.3L/383

Advertised Compression Ratio: 10.3:1

Air Cleaner Included: No

Assembled: Yes

Brand: ATK High Performance Engines

Cam Style: Hydraulic roller, OE roller

Carburetor Included: No

Computer Included: No

Crate Engine Cylinder Head Material: Aluminum

Crate Engine Family: Chevy LS

Cylinder Heads Included: Yes

Distributor Included: No

Engine Balance: Internal

Engine Block Material: Cast iron

Flexplate Included: No

Flywheel Included: No

Harmonic Balancer Included: No

Intake Manifold Included: No

Manufacturer's Part Number: LM7-LB-3

Oil Pan Included: No

Part Type: Crate Engines

Product Line: ATK High Performance GM LM7/LS1 383CI 515+ HP Stage 1 Long Block Crate Engines

Quantity: Sold individually.

Rear Main Seal Style: 1-piece

Remanufactured: Yes

Spark Plug Wires Included: No

Spark Plugs Included: No

Supercharger Included: No

Throttle Body Included: No

Timing Cover Included: No

UPC: 653517541254

Valve Covers Included: No

Water Pump Included: No

Wiring Harness Included: No

NST Cargo coordination: Heavy or oversized equipment delivery is coordinated according to the product and destination address.

Delivery estimate: Timing and applicable arrangements are confirmed during checkout or by Kayros Tool support.

Returns: Contact Kayros Tool before returning an item so eligibility, condition, and instructions can be confirmed.