Product Description:
Take your LS-powered build to the next level with the BluePrint Engines GM LS Compatible 427 C.I. Pro Series Crate Engine, delivering an impressive 585 horsepower and 520 ft.-lbs. of torque in a high-performance package designed for serious street and track applications. This engine combines modern LS architecture with race-inspired durability, featuring a high-strength LSX-style cast iron block, forged internals, LS3 aluminum cylinder heads, and a fully calibrated Holley Terminator X Max Gen IV EFI system for precise fuel and ignition control.
Built around a 427 cubic inch displacement, this Pro Series engine features an 11:1 compression ratio, forged pistons, a steel crankshaft with a 4.125-inch stroke, and a hydraulic roller camshaft with aggressive .624-inch lift for exceptional power throughout the RPM range. The included Holley Terminator X Max ECU and harness provide modern EFI technology with advanced tuning capability while maintaining a reliable, street-friendly setup.
The Base Dressed configuration provides the core performance components needed for custom LS swaps and high-performance applications, allowing builders to select accessories and drivetrain components to match their specific vehicle. Whether you're upgrading a Camaro, Corvette, Chevelle, Nova, truck, or custom LS swap project, this 427 C.I. crate engine delivers big-block-level power with LS reliability and versatility.
Available through Hawks Motorsports — your source for high-performance LS swap components, crate engines, and GM performance solutions.
Key Features:
- 427 C.I. LS Compatible Pro Series Crate Engine
- 585 Horsepower / 520 ft.-lbs. Torque
- BluePrint Engines high-strength LSX-style cast iron block
- LS3-style aluminum cylinder heads
- 11:1 Compression Ratio
- Forged pistons for increased durability
- Steel crankshaft with 4.125-inch stroke
- 6.125-inch connecting rods
- Hydraulic roller camshaft:
- .624" Intake Lift
- .624" Exhaust Lift
- 239° Intake Duration @ .050"
- 255° Exhaust Duration @ .050"
- 114° LSA
- Holley Terminator X Max Gen IV EFI system with ECU and harness
- Dyno tested and calibrated by BluePrint Engines
- Requires 91+ octane fuel
- Designed for custom performance builds and LS swaps
Fitment Applications:
Compatible with a wide range of GM LS swap and performance applications including:
- Chevrolet Camaro LS Swap Builds
- Chevrolet Corvette Performance Applications
- Chevrolet Chevelle LS Swap Projects
- Chevrolet Nova LS Swap Builds
- Chevrolet Impala / Caprice LS Conversions
- GM Trucks and SUVs
- Custom Street Rods
- Pro Touring Builds
- Restomod Vehicles
Note: Vehicle-specific fitment requires verification of accessory configuration, oil pan clearance, drivetrain compatibility, and installation requirements.
Installation Notes:
- Requires a non-weighted flexplate/flywheel.
- Retro-fit oil pan fits many 1955-1995 GM front-engine, rear-wheel-drive V8 applications.
- Not intended for pollution-controlled vehicles or dry sump applications.
- Holley Terminator X ECU is pre-calibrated by BluePrint Engines; do not use standard Holley base calibrations for this engine.
- BluePrint Engines recommends matching intake components to maintain proper MAF calculations and dyno calibration.
