BluePrint Engines BluePrint Builder Series LS376/530HP Standard Edition EFI Crate Engine and 4L65/70E Trans Combos BLS376K4L

BluePrint's LS376/530 combo puts a 530-horsepower, 6.2-liter (376 cubic inch) LS small-block through a 4L65/70E four-speed automatic, with a polished front accessory drive and a complete fuel-injection control system already wired in. The engine makes 495 lb-ft of torque at a 10.7:1 compression ratio, using hypereutectic pistons and a nodular iron crankshaft under BluePrint's aluminum heads. Who this suits It is built for an LS swap into a GM-based chassis where the builder wants to drop in a running powertrain rather than source and tune an engine control system separately. The kit includes its own ECU, wiring harness, drive-by-wire throttle body and pedal, coil packs, and EV6-type injectors, so the electronics arrive matched to the engine instead of needing an aftermarket standalone. What to check before ordering This combo is sized to the 2008-2017 Chevrolet LS-based 6.2L/376 engine family, so confirm your project matches that generation before buying. Expect a 2,200-2,400 rpm stall from the included torque converter, paired with the 4L65/70E's own electronic controller. Pairing this engine with BluePrint's own air intake kit keeps the factory mass air flow calibration honest, and BluePrint specifies 91-octane fuel with its BPP710 oil. Common questions Does the accessory drive come in another finish? This listing is the polished version; BluePrint also offers the same combo with a black front accessory drive under a different part number. Flywheel or flexplate? This automatic pairing ships with a flexplate, not a flywheel. What oil pan comes with it? A GM muscle-car swap-style pan designed for this kind of installation.