Chevrolet Performance SP383 C.I.D EFI Turnkey Long Block Crate Engines

Chevrolet Performance SP383 c.i.d EFI turnkey long block crate engines offer the strong pull of the proven 383 "stroker" combination and the contemporary convenience of electronic fuel injection, delivered with most of the engine accessories required to get the engine running in your project vehicle! SP383 EFI engines incorporate a port-style injection system, with the injectors plumbed in a carburetor-style intake manifold, and the throttle body mounted in the conventional position of the carburetor, which allows for a traditional air cleaner and a classic appearance. Chevrolet Performance SP383 EFI turnkey long blocks are rated at 450 hp and a stout 436 lb.-ft. of torque. The turnkey assemblies are delivered with the distributor and damper installed. The throttle body, starter, air conditioning pump, alternator, single-belt front-end accessory drive system, and more are also included. Technical specs: * Chevy Small Block V8 * Bore x stroke (in): 4.005 x 3.800 * Cast iron block with 4-bolt main caps * Forged steel crankshaft * Heavy-duty forged steel connecting rods * Hypereutectic aluminum pistons * Steel hydraulic roller camshaft * Valve lift (in): .474 intake/.510 exhaust * Camshaft duration at .050 in.: 208 degrees intake/221 degrees exhaust * Fast Burn aluminum cylinder heads, 62cc chambers * Valve size (in): 2.000 intake/1.550 exhaust * Compression ratio: 9.72:1 (nominal) * Aluminum roller-style rocker arms * Rocker arm ratio: 1.5:1 Show Less