Crate Engine, BluePrint LS 427 ProSeries Stroker, Deluxe LB, w/Front Drive/EFI

LS 427ci Pro Series Deluxe EFI Engine with Front Drive by BluePrint Engines®

605-hp / 565 lb-ft core uses forged 4.125-inch crank and forged pistons by BluePrint Engines®.

BluePrint Engines®' LS 427ci Pro Series Stroker Deluxe with Front Drive/EFI is rated at 605 hp and 565 lb-ft with 11.0:1 compression. It combines forged 4.125-inch-stroke crankshaft, forged pistons, LS3-style aluminum heads and hydraulic-roller camshaft (.624/.624 lift; 239/255° @ .050, 114° LSA). Holley Terminator X Max EFI manages the 605-hp stroker package and supports drive-by-wire throttle control.

Additional Technical Specifications • HP & Torque: 625 HP / 565 FT LBS • Compression Ratio: 11:1 • Hydraulic Roller Cam Block: • OEM Block Machined in the USA! • 6-Bolt Main • 4.060" Bored to 4.069 • 1-Piece Rear Main Seal Rotating Assembly: • Forged 6.125" connecting rods • Internal Cylinder Heads: • BluePrint Aluminum Cylinder Heads • 72cc chamber • 2.165" intake/1.600" exhaust valves • 259cc intake/102cc exhaust runners Cam Specs: • .624 intake .624 exhaust lift • 239 intake 255 exhaust duration • @ .050, 114-degree lobe sep. Ignition Timing: • ECM supplied with calibration • Not capable of transmission control • Transmission controller required Also Includes: • 87mm LT4 DBW Throttle Body • LS3 intake manifold • 42# injectors and returnless fuel rail • Harmonic balancer • Valve covers, retro fit oil pan and timing cover • Coil Packs • All sensors required for engine to run • Spark plug wires & wiring harness • Gas pedal • Complete Front Accessory Drive Premium Black Coated • Alternator, A/C, P/S, All belts and pulleys. Notes: • This engine requires a non-weighted flex plate/flywheel. • Recommended Fuel: 91 Octane • BluePrint Engines recommends a 2200+ RPM stall converter. • Retro fit oil pan will fit most 1955-1995 GM front engine, RWD, V8 cars • Not for use in pollution-controlled vehicles or in dry sump applications. • The Included LS controller package is for engine control only. Does not contain any transmission or body control. The ECU comes with calibration that is optimal for our engine, however, please note that vehicle parameters such as gearing, tire size, vehicle weight, air intake, headers, etc. may necessitate additional tuning once installed into your specific vehicle. The included ECU is unlocked for further refinement at your local dyno shop if required. • BluePrint Engines Recommends Air Intake Kit to ensure correct MAF calculations and Dyno calibration are maintained with the provided ECU / tuning.