MARINE LONG BLOCKS



Product Image Item Name- Price
L1-BPR 632 DELUXE BILLET MARINE LONG BLOCK ASSEMBLY

L1-BPR 632 DELUXE BILLET MARINE LONG BLOCK ASSEMBLY

THIS IS A BOOSTPOWER USA PARTIAL 632 CUBIC INCH MARINE LONG BLOCK ASSEMBLY. IT IS BASED ON A MERLIN CNC OR DART CAST IRON ENGINE BLOCK. IT IS FURTHER...

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L2-BPR 598 DELUXE BILLET MARINE LONG BLOCK ASSEMBLY

L2-BPR 598 DELUXE BILLET MARINE LONG BLOCK ASSEMBLY

THIS IS A BOOSTPOWER USA PARTIAL 598 CUBIC INCH MARINE LONG BLOCK ASSEMBLY. IT IS BASED ON A MERLIN CNC OR DART CAST IRON ENGINE BLOCK. IT IS FURTHER...

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L3-BPR 572 DELUXE BILLET MARINE LONG BLOCK ASSEMBLY

L3-BPR 572 DELUXE BILLET MARINE LONG BLOCK ASSEMBLY

THIS IS A BOOSTPOWER USA PARTIAL 572 CUBIC INCH MARINE LONG BLOCK ASSEMBLY. IT IS BASED ON A MERLIN CNC OR DART CAST IRON ENGINE BLOCK. IT IS FURTHER...

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L4-BPR 565 DELUXE BILLET MARINE LONG BLOCK ASSEMBLY

L4-BPR 565 DELUXE BILLET MARINE LONG BLOCK ASSEMBLY

THIS IS A BOOSTPOWER USA PARTIAL 565 CUBIC INCH MARINE LONG BLOCK ASSEMBLY. IT IS BASED ON A MERLIN CNC OR DART CAST IRON ENGINE BLOCK. IT IS FURTHER...

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L5-BPM 502 MARINE LONG BLOCK REPLACEMENT

L5-BPM 502 MARINE LONG BLOCK REPLACEMENT

This 502 engine is engineered for improved boating performance. The massive GEN 6 502 big-block is a bolt-in replacement for your old Mercury or...

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L6-BPM 383 MARINE LONG BLOCK

L6-BPM 383 MARINE LONG BLOCK

With GM's legendary Fast Burn cylinder heads and 383 cubic inches, the BPM 383 435 horsepower engine delivers incredible torque with smooth, linear...

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L7-BPM 350 MARINE LONG BLOCK PERFORMANCE

L7-BPM 350 MARINE LONG BLOCK PERFORMANCE

This is a Boostpower USA 350 Marine long block engine assembly. With a typical dual plane Marine intake manifold and a 4 barrel Carb, this engine...

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BOOSTPOWER USA  offers specialty complete high performance race and pleasure marine long block partial engine kits. These marine long blocks are assembled with precision and a great foundation for your marine engine. We also offer marine short-blocks, balanced rotating assemblies, custom cylinder heads, and all the other hardcore marine engine internal parts necessary to complete a reliable performance marine engine project.  BOOSTPOWER’s years of dedication to technology along with our continuous building, dyno testing, competing and tuning these mighty power plants assures you of a winning reliable combination right from the start.