Crate Engine, BluePrint LS 427 ProSeries Stroker, Base Dressed Long Block

The Performance Level You Desire!

A great foundation to return your vehicle to its former glory or a tire eating machine

Add new power and life to your ride with this brand new crate engine from BluePrint Engines. Featuring an all new engine block that BluePrint designed, manufactured and machined right here in America. Engine is ready to drop in and has been fully Dyno tested, passed vigorous inspections, and is ready to power up your project. With BluePrint offering one of the best warranties in the business, you will have peace of mind when you drop this motor in between your frame rails.

TECHNICAL SPECIFICATIONS HP & Torque: 625 HP / 550 FT LBS Compression Ratio: 11:1 Aluminum Heads Hydraulic Roller Cam Forged Crank Forged Pistons BLOCK: OEM Block Machined in the USA! 6-Bolt Main 4.060" Bored to 4.069 1-Piece Rear Main Seal ROTATING ASSEMBLY: New Forged Crankshaft 4.125" stroke Forged 6.125" connecting rods Forged Pistons Internal CYLINDER HEADS: BluePrint Aluminum Cylinder Heads 72cc chamber 2.165" intake/1.600" exhaust valves 259cc intake/102cc exhaust runners CAM SPECS: Roller .624 intake .624 exhaust lift 247 intake 263 exhaust duration @ .050, 114-degree lobe sep. IGNITION TIMING: Ignition box required for carburetor or ECM supplied with calibration Not capable of transmission control Transmission controller required for Fuel Injection ALSO INCLUDES: Carburetor - 850cfm with mechanical secondaries, dual accelerator pumps and mechanical choke Single plane aluminum intake Harmonic balancer Valve covers, retro fit oil pan and timing cover Coil Packs and coil pack harness Crank, cam and MAP sensors Spark plug wires & wiring harness Fuel Injection - 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 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 Does NOT include ignition box. 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.