This is the state of the art setup for your hotrod (320 HP and 345 Torque). This (F-Car) Camaro/Firebird LS1 engine kit includes the LS1 engine complete with fuel injectors, exhaust manifolds, and flex plate. The engine features an aluminum block and cylinder heads with 10.25:1 compression ratio. The engine kit is supplied with ECM, and wire harness that allows this engine to be installed with a four-speed automatic transmission (4L60E) in any 1975 or earlier vehicle. Details: This is the state of the art setup for your hotrod (320 HP and 345 Torque). This (F-Car) Camaro/Firebird LS1 engine kit includes the LS1 engine complete with fuel injectors, exhaust manifolds, and flex plate. The engine features an aluminum block and cylinder heads with 10.25:1 compression ratio. The engine kit is supplied with ECM, and wire harness that allows this engine to be installed with a four-speed automatic transmission (4L60E) in any 1975 or earlier vehicle. LS1 Technical Information Bore/Stroke 2.98/3.62 Compression Ratio 10.25.1 Gross Power 320 HP @ 5800 RPM Gross Torque 330 Lb-Ft @ 4400 RPM LS1 Technical Features LS1 5.7/L V8 engines assembly contains: Aluminum 6-bolt main engine block Nodular iron crankshaft with undercut and rolled fillets 5.098" powdered metal connecting rods Flat top, light-weight pistons 3/8" single roller timing chain set Hydraulic roller camshaft (0.500 lift / 200/203º 0.050 duration) Symmetrical port heads w/2.00/1.55 valves 1.7 ratio investment cast roller rocker arms Composite inlet mainifold with tuned runners Single bore throttle body Return-less fuel rail with 25lb/hr injectors 58 psi Tubular log-style exhaust manifolds Cast aluminum oil pan 14-inch flexplate