ATK Engines ATK High Performance Chevy 383 Stroker 470 HP Complete Long Block Crate Engines HP101C

This ATK long block, part number HP101C, puts 470 hp into a 6.3-liter, 383-cubic-inch small-block Chevy package, built around a forged rotating assembly, a hydraulic roller cam, and aluminum cylinder heads at a 10.0:1 compression ratio that stays friendly to pump gas. What comes with it Carburetor, intake manifold, distributor, oil pan, valve covers, timing cover, a long-style water pump, harmonic balancer, flexplate, spark plugs, and plug wires are all installed on this complete build. A flywheel, air cleaner, computer, and wiring harness are left off, so budget for those if your project needs them. What to check before you buy The induction is carbureted, specified around a 750 CFM carburetor; an aftermarket EFI system is a separate conversion if you want fuel injection instead. The flexplate suits automatic-transmission use; a manual-transmission build still needs its own flywheel. This combination is happiest on premium fuel, 91 octane or better. Common questions Is this a turnkey engine? It is nearly complete; you will still need to add an air cleaner, exhaust, and the remaining cooling components. Does it carry a warranty? Yes, ATK provides a warranty on this engine; contact ATK for the specific terms. Will it bolt into a manual-transmission car? Yes, though you will need to add a flywheel since only a flexplate ships with it. Chevy crate engines Specifications Feature Details Brand ATK High Performance Engines Manufacturer’s Part # HP101C Product Type Complete Long Block Crate Engine Crate Engine Family Chevy Small Block Horsepower 470 HP Torque Estimated High Torque Output Displacement 6.3L / 383 CI Compression Ratio 10.0:1 Block Material Cast Iron Crankshaft Material Forged Steel Connecting Rods Forged Steel Piston Material Hypereutectic Aluminum Camshaft Type Hydraulic Roller Cylinder Head Material Aluminum Cylinder Heads Included? Yes Intake Manifold Style Carbureted Carburetor Included? Yes Throttle Body Included? No Distributor Included? Yes Oil Pan Included? Yes Valve Covers Included? Yes Timing Cover Included? Yes Water Pump Included? Yes (Long Style) Harmonic Balancer Included? Yes Flexplate Included? Yes Flywheel Included? No Air Cleaner Included? No Spark Plugs Included? Yes Spark Plug Wires Included? Yes Computer Included? No Wiring Harness Included? No Supercharger Included? No