Speedmaster Windsor 427 Cubic Inch 500 HP Downdraft EFI Turn-Key Crate Engine

OverviewUnleash monstrous torque and reliable street/strip power with this fully built 351 Windsor to 427Ci stroker engine by Speedmaster. Featuring a boltin EFI downdraft injection system and complete serpentine drive kit, this turnkey engine delivers modern usability with vintage legend.SpecsBrand: SpeedmasterPart Number: PCE284.1018.04Part Type: Crate EngineEngine Assembly Style: CompleteCrate Engine Cylinder Head Material: AluminumAssembled: YesEngine Balance: External (uses 28oz externally balanced damper & flywheel)Intake Manifold Included: Yes (Downdraft EFI 8-Stack System)Cylinder Heads Included: Yes (210cc Aluminum Heads)Carburetor Included: No (uses EFI)Throttle Body Included: Yes (8 Stack EFI with integrated throttle bodies)Distributor Included: YesOil Pan Included: Yes (6 Qt Drag Front Sump Pan)Valve Covers Included: YesTiming Cover Included: YesWater Pump Included: YesHarmonic Balancer Included: Yes (28oz External Balanced, SFI Rated)Flexplate Included: NoFlywheel Included: NoAir Cleaner Included: NoSpark Plugs Included: Yes (Racing Copper Core Triple Electrode x8)Spark Plug Wires Included: YesComputer Included: Yes (FiTech ECU, Ultra RAM model)Wiring Harness Included: Yes (Complete EFI wiring loom + handheld controller)Rear Main Seal Style: 1-pieceQuantity: Sold individually.Notes: Fully assembled 427ci Stroker crate engine with downdraft EFI system. Forged internals, aluminum heads, dyno tested. EFI system includes ECU, sensors, and 8-stack throttle bodies. Approx. 500+ HP and 550+ lb-ft torque.DescriptionKey Highlights 427 cubic inches of displacement built from a 351W Windsor block stroked to 4.170″ Fully equipped FiTech Ultra EFI & Speedmaster downdraft system for drivability and fuel efficiency Double‑roller timing chain, hydraulic roller camshaft (approx. 242/248 @ .050"), CNC-balanced rotating assembly Forged internals: 4340 crank, H‑beam rods, DSS pistons, King bearings Aluminum 210cc heads with hardened guide plates and screw‑in studs Black DNA® 1.6 roller rockers, polished valve covers, and complete serpentine system Includes distributor, oil system, ECU, sensors, harness, and more Engine stand and dyno testing includedWhat's IncludedA complete build from block to plug: Forged rotating assembly: crankshaft, rods, pistons 351W iron block with 4-bolt mains, bored and sleeved Hydraulic roller cam, matched lifters, timing set Fully assembled 210cc aluminum heads Complete FiTech EFI system with ECU, harness, handheld Serpentine accessory drive with black finish Cooling, ignition, oiling, and fuel accessories Wired, tested, and mounted on an engine standWhy Choose This Engine? Turn-key ready: install with minimal prep EFI tuned power: modern fuel delivery and efficiency Built to last: forged internals, performance bearings Stylish finish: black and polished aluminum parts Everything included: no need to source extra partsApplications Vintage Fords (Mustangs, Torinos, Broncos, Falcons) upgrading to modern power Hot rods, street rods, Pro‑touring builds looking for serious torque Lightweight trucks or SUVs needing extra grunt with EFI convenience Builders wanting reliable driveability without the hassle of tuning a carb

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