Back to Results Home Engines & Components Engine Assemblies Engine and Transmission Combos BluePrint Engines BLS427K4L7 BluePrint Builder Series LS427/625HP Standard Edition EFI Crate Engine and 4L65/70E Trans Combos BLS427K4L7

Overview Brand: BluePrint Engines Manufacturer’s Part Number: BLS427K4L7 Part Type: Engine and Transmission Combos Product Line: BluePrint Builder Series LS427/625HP Standard Edition EFI Crate Engine and 4L65/70E Trans Combos Summit Racing Part Number: MLL-BLS427K4L7 UPC: 887753972521 Crate Engine Family: Chevy LS Engine Assembly Style: Long block Assembled: Yes Intake Manifold Included: Yes Carburetor Included: No Throttle Body Included: Yes Cylinder Heads Included: Yes Cylinder Head Material: Cast aluminum Distributor Included: No Oil Pan Included: Yes Valve Covers Included: Yes Timing Cover Included: Yes Water Pump Included: Yes Harmonic Balancer Included: Yes Spark Plugs Included: Yes Spark Plug Wires Included: Yes Flexplate Included: Yes Flywheel Included: No Transmission Controller Included: Yes Torque Converter Included: Yes Wiring Harness Included: Yes Computer Included: Yes Quantity: Sold as a kit. Notes: Includes complete ECU, harness, starter, drive-by-wire pedal and throttle body. Polished front accessory drive system includes water pump, alternator, power steering pump, A/C compressor and all belts and pulleys. BluePrint Builder Series LS427/625HP Standard Edition EFI Crate Engine and 4L65/70E Trans Combos BluePrint Builder Series LS427/625HP Standard Edition EFI crate engine and 4L65/70E transmission combos take the guesswork out of matching up an engine and transmission for your ride. Featuring a fuel injected Chevy LS small block-compatible 427 (c.i.d.) engine that produces 625 horsepower, this standard edition builder series includes a polished pulley kit and 4L65/70E automatic transmission. The aluminum BluePrint Engines cylinder heads help produce a nice 11.0:1 compression ratio, with assistance from the hydraulic roller camshaft, forged pistons, and forged crankshaft. Altogether, this assembly produces 565 lbs.-ft. of torque. When you need or want a new LS powertrain for your ride, go with the authority in crate engines and their BluePrint Builder Series LS427/625HP Standard Edition EFI crate engine and 4L65/70E transmission combos. Other product features, items, and specifications include: Block: * OEM style (4.060 in. bored to 4.069 in.) * Main caps are 6-bolt * One-piece rear main seal Rotating Assembly: * New forged crankshaft * Stroke – 4.125 in. * Forged connecting rods (6.125 in.) * Forged pistons * Internally balanced * Non-weighted harmonic balancer Cylinder Heads: * BluePrint PS8015 models * Chamber – 72cc * Valves are 2.165 in. intake and 1.600 in. exhaust * Exhaust runners are 259cc intake and 102cc exhaust Camshaft: * Hydraulic roller * Intake valve lift – 0.624 in. * Exhaust valve lift – 0.624 in. * Intake duration at 0.050 in. of lift – 239 * Exhaust duration at 0.050 in. of lift – 255 * Lobe separation angle (LSA) – 114 degrees Ignition Timing * ECM supplied with calibration (initial and total timing are controlled by PCM) * Firing order is 1-8-7-2-6-5-4-3 Assembled 4-speed Transmission Package: * Complete 4L65/70E package with electronic transmission controller * Torque converter with 2,200–2,400 rpm stall * Non-weighted flexplate * Starter Other Components: * All required (to make engine run) sensors and wiring harness (LS controller package only controls engine) * Unlocked ECU for local Dyno shop tuning refinement * LT4 87mm DBW (Drive-By-Wire) throttle body * Valve covers, retro-fit oil pan (fits most 1955-95 GM front engine, RWD, V8 cars), and timing cover * LS3 car intake manifold * Fuel injectors (42 lbs.) and return-less fuel rail * Coil packs * Spark plug wires * Gas/throttle pedal * Complete front accessory drive includes A/C, power steering, alternator, belts, and pulleys * ACDelco 41-985 spark plugs (0.040 in. gap) Note: BluePrint highly recommends their BPPLS01013 air intake kit to ensure proper MAF calculations (same used on Dyno). Recommended fuel is 91-93 octane. Recommended oil is BPP710. Not designed for use with dry sump or pollution-controlled vehicles. Applications Make: CHEVROLET Beginning Year: 2006 Ending Year: 2015 Engine Type: V8 Engine Size: 7.0L/427 Engine Family: Chevy small block Gen III/IV (LS-based engines) Fuel Delivery Type: Fuel injection Transmission: Automatic Transmission Manufacturer Code: 4L65-E Make: CHEVROLET Beginning Year: 2006 Ending Year: 2015 Engine Type: V8 Engine Size: 7.0L/427 Engine Family: Chevy small block Gen III/IV (LS-based engines) Fuel Delivery Type: Fuel injection Transmission: Automatic Transmission Manufacturer Code: 4L70-E