Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Reference Information

Crate Engines, Marine Pro Series GM 540 C.I.D. 670 HP Dressed Long Block, Assembled, Internal Balance, Aluminum Heads, Chevrolet, Big Block, Each

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