BluePrint Engines Marine Pro Series GM 540 C.I.D. 670 HP Dressed Long Block Crate Engines

More power for your boat! BluePrint Engines Marine Pro Series GM 540 c.i.d. 670 hp dressed long block crate engines are manufactured under strict tolerances and provide outstanding, consistent results. BluePrint Pro Series Marine crate engines are also dyno-tested and include the dyno sheets. Marine Pro Series GM 540 c.i.d. long blocks feature: * BluePrint cast iron block - 4-bolt mains - One-piece rear main seal - Mechanical fuel pump provision - Standard deck * Forged crankshaft - 4.250 in. stroke * Forged H-beam 6.385 in. connecting rods * Forged pistons * Internal balanced rotating system * Aluminum cylinder heads - 119cc chamber - 2.30 in. intake/1.88 in. exhaust valves - 316cc intake/124cc exhaust runners * Hydraulic roller camshaft - Lift = 0.647 in./0.647 in. - Duration at 0.050 in. = 248/254 degrees - Lobe separation = 112 degrees * Carburetor * Aluminum intake manifold * Billet distributor * Valve covers, oil pan, and timing cover * Spark plug and wires * Harmonic balancer Show Less