Chevrolet Performance LS427/570 427ci Crate Engine – 19421004

Dominate with the Chevrolet Performance LS427/570 427ci Crate Engine. This destroked LS7-based powerhouse delivers 570 horsepower and 540 lb-ft of torque from 7.0 liters of displacement. The LS427 features titanium intake valves, CNC-ported aluminum heads, and forged internals for maximum performance and reliability. This engine combines LS7 technology with optimized displacement for incredible naturally aspirated power. Perfect for pro-touring builds, road racing applications, and high-performance street cars. The dry-sump oiling system ensures reliability under high cornering loads. Factory-assembled and dyno-tested.

**Technical Specifications:**

Technical Specifications of the LS427/570:
Part Number: 19421004
Engine Type: LS Series Small Block V8
Displacement (cubic inches): 427 (7.0 L)
Bore x Stroke (inches): 4.125 x 4.000 (101.6 x 92 mm)
Block (Part No. 12602689): Cast aluminum block with 6-bolt cross-bolted main bearings
Crankshaft (Part No. 12611649): Forged steel
Connecting Rods (Part No. 12661677): Forged titanium
Pistons: Hypereutectic aluminum
Cam Type (Part No. 19419859): Hydraulic roller
Valve Lift (inches): 0.591 intake / 0.590 exhaust
Cam Duration (@0.050 inches): 227° intake / 242° exhaust
Cam Lobe Separation Angle: 116°
Cylinder Heads: CNC machined LS7 ports with 70 cc combustion chambers
Valve Diameter (inches): 2.200 titanium intake, 1.610 sodium-filled exhaust
Compression Ratio: 11.0:1
Valve Lifters: Die-cast, roller tip
Valve Ratio: 1.8:1 (intake offset)
Recommended Fuel: Premium gasoline
Recommended Maximum RPM: 7000 rpm
Balanced: Internally balanced