THIS IS A BOOSTPOWER USA PARTIAL 565 CUBIC INCH MARINE LONG BLOCK ASSEMBLY. IT IS BASED ON A DART CAST IRON ENGINE BLOCK. IT IS FURTHER EQUIPPED WITH A CUSTOM 4340 NON-TWIST FORGED STEEL CRANKSHAFT, PRO BILLET RODS WITH HD BUSHINGS & CP CUSTOM PISTONS DESIGNED FOR CONTINUOUS DUTY MARINE USE. THESE LONG BLOCKS COME WITH PRECISION TRI-ARMOR COATED MAIN & ROD BEARINGS SET TO A TOLERANCE OF .0003. THIS LONG BLOCK ASSEMBLY IS INTERNALLY BALANCED AND READY TO FINAL ASSEMBLY. THE CYLINDER HEADS ARE FULLY POLISHED BRODIX BB3’S OR EQUIVELANT WITH A BPM FULL CNC HIGH FLOW PORT JOB. THESE HEADS HAVE ARP FASTENERS & STUDS WITHIN AND ARE EQUIPPED WITH SI SEVERE DUTY STAINLESS STEEL AND OR INCONEL VALVES. CUSTOM VALVE SPRINGS WITH TITANIUM RETAINERS AND JUMBO LOCKS. (VALVE SIZES & MATERIALS OPTIONAL) A COMETIC MLS CUSTOM MADE HEAD GASKET IS SEALING THE HEADS ALONG WITH THE ARP BLOCK FASTENERS CUSTOM MADE FOR THE BPM LONG BLOCK INCLUDING 2 EXTRA STUDS PER HEAD FOR HIGH BOOST APPLICATIONS. THESE LONG BLOCKS ARE COMMONLY 9:1.1 STATIC COMPRESSION RATIO. THESE DURABLE LONG BLOCK ASSEMBLIES COME COMPLETE WITH A BAFFLED POWDERCOATED & ZINK PLATED OFFSHORE STYLE OIL PAN, PICK UP AND DIP STICK, A CUSTOM PREPPED OIL PUMP AND HD DRIVE ROD, A BILLET STEEL HYDRAULIC OR SOLID CAMSHAFT, CUSTOM SNAP RING STYLE HYDRAULIC OR SOLID FULL ROLLER LIFTERS, HEAT TREATED CUSTOM LENGTH PUSH RODS, JESEL OR T&D ROCKER ARM SYSTEM ALONG WITH ALL THE BEST COMPONANTS TO COMPLETE THIS BRUTE FOUNDATION! THESE LONG BLOCKS ARE AVAILABLE IN ANY COMPRESSION OR STAGE YOU REQUEST! JUST SIMPLY CALL 805-376-6077 AND ASK A BOOSTPOWER PROFESSIONAL TO QUOTE YOU A LONG BLOCK TAILORED TO YOUR NEEDS. *ENGINES ARE AVAILABLE DIS-ASSEMBLED FOR A LESSER PRICE! *ENGINE PAINT, PULLEY STYLE, MOTOR MOUNT AND EXHAUST! CONFIGURATIONS MAY CHANGE THE PRICE. CALL FOR QUOTE! *LONG BLOCKS SHOWN MAY NOT REFLECT LISTED PRICE *PRICES SUBJECT TO CHANGE WITHOUT NOTICE-ASK FOR SPECIALS! *LOCAL TAX MAY APPLY TO ORDER CALL 805-376-6077 FOR MORE PICS-SEE THE ENGINE PICS GALLERY.