Description: Horsepower & Torque: 600 Horsepower / 530 FT LBSCompression Ratio: 11:1Aluminum HeadsHydraulic Roller CamForged CrankForged PistonsBlock:BluePrint Engines High Strength Cast Iron BlockIncreased Deck Thickness and Strength WebbingExtended Cylinder SkirtPriority Main Oiling4.0685" Bore6-Bolt Main1-Piece Rear Main SealImproved Water Jacket DesignUtilizes OEM LS3 Front and Rear CoversRotating Assembly:New Forged Crankshaft4.125" StrokeForged 6.125" Connecting RodsForged PistonsInternally Balanced Front and RearCylinder Heads:BluePrint Aluminum Cylinder Heads - PS801569cc Chamber2.165" Intake / 1.590" Exhaust Valves259cc Intake / 102cc Exhaust RunnersCam Specs:Hydraulic Roller.624 Intake / .624 Exhaust Lift239 Intake / 255 Exhaust Duration@.050-114 Degree Lobe SeparateIgnition Timing:ECM Supplied with CalibrationNot Capable of Transmission ControlTransmission Controller RequiredAlso Includes:Valve CoversLS Swap Oil PanTiming CoverDrive by Wire Throttle BodyEngine Harness and ECU KitLS3 Fabricated Intake ManifoldInjectors and Fuel Rail KitCoil PacksSpark Plugs and WiresWater PumpHarmonic Balancer Throttle PedalNotes: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 BluePrint Engines LS controller package contains a fully tested, calibrated, locked ECU, optimized for this specific engine. This package has undergone extensive testing for performance, reliability and the safety of you and your engine.