Edelbrock part #46125 Gen III HEMI 426 Long-Block is the base for our Supercharged crate engine but is also a great starting point for any high horsepower forced induction Mopar build. Its compact design allows for a seamless swap into most platforms; Rocker Arms: Stock Gen III Hemi; Cylinder Heads: Edelbrock Performer RPM #61099; Fuel Injectors: Not included; Supercharger: Not included; eliminating the need for modifications to your engine bay or hood. The foundation of this engine is a brand new iron Mopar 392 block with a forged and balanced Manley crankshaft forged Manley H-Beam connecting rods and Manley forged aluminum pistons. The 4.090in. bore and 4.050in. stroke help this HEMI produce incredible low end torque. The 9.9:1 compression ratio allows for safe and reliable supercharged performance on 91 octane pump gas. Engine Specifications: Displacement: 426 c.i.d.; Horsepower: Upwards of 808 HP when used with an Edelbrock Supercharger; Torque: Upwards of 762 ft/lbs. when used with an Edelbrock Supercharger; Compression: 9.9:1; Block: New Mopar Iron; Crankshaft: Forged 4340; Pistons: Forged Aluminum -5cc; Camshaft: 226 Deg /234 Deg .619/.612 114 cl