BluePrint GM LS-Compatible Base Dressed Engine – 427 c.i. – 600 HP

Wide Open Design Verified independent store

→

600 HP · 530 lb-ft · 427 c.i. · 91+ Octane · Dyno Tested · 30-Month/50,000-Mile Warranty Built for serious builders who need big-cubic-inch LS power in a ready-to-complete package, this BluePrint Engines GM LS Compatible 427 Crate Engine delivers 600 horsepower and 530 lb-ft of torque. The increased 427 cubic inch displacement provides strong low-end torque and broad power delivery for high-performance off-road, street, racing, and custom vehicle applications. At the foundation is a high-strength LSX-style cast iron block featuring increased deck thickness, reinforced webbing, extended cylinder skirts, priority main oiling, and six-bolt mains. A forged rotating assembly combines a 4.125-inch stroke crankshaft, forged 6.125-inch connecting rods, and forged pistons for the durability required in high-load and high-horsepower builds. BluePrint LS3-style aluminum cylinder heads and an aggressive hydraulic roller camshaft help the engine produce strong airflow and power throughout the RPM range. The base-dressed configuration includes a fabricated aluminum LS3 intake manifold, drive-by-wire throttle body, fuel rails, injectors, coil packs, water pump, retro-fit oil pan, and other essential engine components. The ECU and wiring harness are not included, allowing builders to select an engine management package that matches their transmission, vehicle wiring, tuning requirements, and overall build. Need to confirm fitment or get an exact delivered price? Call or text our team before ordering. Includes: BluePrint GM LS Compatible 427 Base-Dressed Crate Engine High-Strength LSX-Style Cast Iron Block BluePrint LS3 Aluminum Cylinder Heads BluePrint Fabricated Aluminum LS3 Intake Manifold Fuel Rails Drive-by-Wire Throttle Body 42 lb/hr Fuel Injectors Hydraulic Roller Camshaft Forged Crankshaft Forged Connecting Rods Forged Pistons Retro-Fit Oil Pan Water Pump Harmonic Balancer Timing Cover Valve Covers Coil Packs Spark Plugs Spark Plug Wires Note: This engine does NOT include an ECU or engine controller, engine wiring harness, drive-by-wire accelerator pedal, flexplate or flywheel, front accessory drive system, alternator, power steering pump, air-conditioning compressor, exhaust headers, air intake system, transmission controller, or transmission. Specifications Specification Details Engine Type GM LS Compatible V8 Displacement 427 Cubic Inches Horsepower 600 HP Torque 530 lb-ft Block Material High-Strength Cast Iron Block Design LSX Style Bore 4.0695 Inches Stroke 4.125 Inches Main Caps 6-Bolt Main Compression Ratio 11.0:1 Crankshaft Forged Steel Connecting Rods Forged 6.125-Inch Rods Pistons Forged 22cc Dish Pistons Engine Balance Internally Balanced Front and Rear Cylinder Heads BluePrint LS3-Style Aluminum Heads Combustion Chamber 69cc Intake Valve Diameter 2.165 Inches Exhaust Valve Diameter 1.590 Inches Intake Runner Volume 259cc Exhaust Runner Volume 102cc Camshaft Type Hydraulic Roller Camshaft Lift .624-Inch Intake / .624-Inch Exhaust Duration at .050 Inch 239-Degree Intake / 255-Degree Exhaust Lobe Separation Angle 114 Degrees Intake Manifold BluePrint Fabricated Aluminum LS3 Intake Throttle Body Drive-by-Wire Fuel Injectors 42 lb/hr at 58 PSI Oil Pan Retro-Fit Wet-Sump Oil Pan Oil Capacity 6 Quarts with Recommended Filter Recommended Fuel 91-Octane or Higher Recommended Stall Converter 2,200 RPM or Higher Firing Order 1-8-7-2-6-5-4-3 Block Features Increased deck thickness Reinforced strength webbing Extended cylinder skirts Improved water-jacket design Priority main oiling Six-bolt main construction One-piece rear main seal Compatible with OEM-style LS3 front and rear covers Important Installation Notes Built by Off-Road People, Supported by Off-Road PeopleWide Open Design has more than 20 years of experience building LS-powered rock crawlers, trail rigs, race cars, and custom tube-chassis vehicles. We can help you match the engine with the correct cooling system, fuel delivery, transmission, drivetrain, and installation components for your build. Engine controller, ECU, and wiring harness are not included. A compatible aftermarket or OEM-style engine management system is required. This engine requires a non-weighted flexplate or flywheel. BluePrint Engines recommends a torque converter with a stall speed of 2,200 RPM or higher. The included retro-fit oil pan is intended to fit many 1955–1995 GM front-engine, rear-wheel-drive V8 vehicles. Off-road chassis and custom installations must be checked for oil-pan and axle clearance. This engine is not intended for dry-sump applications. This engine is not intended for use in pollution-controlled vehicles. Final horsepower can be affected by the ECU calibration, air intake, exhaust system, fuel system, accessories, and other installation components. Verify throttle pedal, fuel pressure, transmission control, accessory drive, exhaust, cooling system, and wiring compatibility before installation. Best For High-horsepower rock bouncers Ultra4 and off-road race vehicles High-performance rock crawlers Prerunners and desert builds LS-swapped custom trucks Muscle cars and hot rods Pro-touring vehicles Builders who want naturally aspirated LS power Applications requiring strong low-end and midrange torque Custom builds using an aftermarket ECU and wiring system Show more