This is the Hellcat engine sold as a crate assembly, which is what makes a 707 horsepower swap a realistic project rather than a parts-chasing exercise. It arrives as a complete long block with the supercharger, induction and front accessories already in place, so the build effort goes into mounts, plumbing and controls instead of assembling a short block. Note that a supporting kit is needed to run it outside its original vehicle.

Technical Specifications:

• 707 HP and 650 lb-ft of torque from 376 cubic inches, 6.2 liters.
• 103.9mm bore and 90.9mm stroke with a 9.5:1 compression ratio and a 6,200 RPM maximum.
• Cast iron block with four-bolt powder metal main caps, forged steel crankshaft, forged pistons and rods with diamond-like coated floating pins.
• 356 aluminum hemispherical chamber heads with 54.3mm intake and 42mm exhaust valves, hollow intake stems and sodium-filled exhaust stems.
• Complete assembly includes the water pump, flywheel and clutch, front sump oil pan, intake manifold with throttle body, fuel injectors and coil packs.