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ATK Marine Engines offers premium-quality rebuilt long block engines specifically for boating applications. These engines are designed to deliver maximum performance and long-term durability for your boat. Order the model recommended for your marine application. ATK Marine rebuilt engines include: * Special marine pistons and rings * Special marine camshaft * Marine gaskets * New intake and exhaust valves * New main, rod, and cam bearings * New valve lifters, rocker nuts, and swivels * Heavy-duty double roller timing chains * Cam sprocket * Crank gear * Freeze plugs
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$2,642.99
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$4,405.99
Replace the tired small block in your boat with ATK High Performance GM 383 Stage 1 marine long block crate engines. They are built from the ground up with off-shore performance in mind. These hand-built and balanced engines utilize Vortec power and stroker torque to produce an awesome 345 hp and 445 ft.-lbs. of twist that will get you moving on the open water. Each engine features brass freeze plugs and corrosion-resistant marine gaskets to keep the engines healthy and reliable. ATK GM 383 Stage 1 Marine long block crate engines include: * Handpicked, remanufactured blocks * Dart Iron Vortec cylinder heads * Nodular steel crankshaft and 4340 I-beam connecting rods * Hypereutectic pistons * Hydraulic roller camshaft * Valve covers * Timing cover and timing set * Oil pan, pump, and pickup tube
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$4,417.99
On Sale
Quicksilver's long block assemblies are all-new (not rebuilt, remanufactured, or reconditioned) marine engines and feature improved components, technology, and built-in durability designed to withstand years of marine duty--one of the most abusive and demanding environments for any engine. The foundation of every Quicksilver long block engine is a new iron block cast to Quicksilver's specifications and designed expressly for marine duty. Thicker castings ensure quieter operation and better durability in saltwater when compared to a standard automotive block. They feature Black-X composite valves that contribute to a 42 percent reduction in valve wear compared to traditional stainless steel valves with hardened seats, while smooth-flowing cylinder heads deliver added performance. Quicksilver Value Series long blocks are cost-effective solutions when replacing an engine with a reliable fuel system and dress components that can be reused, typically when the original engine block has suffered freeze damage. Select the long block needed for your build.
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$5,324.99
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$5,336.99
$4,792.49
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$4,803.29
VEGE remanufactured long block crate engines are an excellent foundation for budget-minded builds. These premium-quality refurbished engines are drop-in replacements for a wide range of stock vehicles—and can be retrofitted into additional applications. Each engine is reverse-engineered to ensure that any original defects are removed. Certified technicians recondition the long blocks to factory specifications, replacing wearable parts or machining them back to OE standards. The engines are thoroughly tested and calibrated to deliver maximum performance and long-term durability. Order the VEGE remanufactured crate engine recommended for your vehicle.
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$2,955.99
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$3,668.99
Looking for big LS engine power at an affordable price? Summit Racing™ remanufactured 5.3L LS long block crate engines are rated at 450 HP and 420 lbs.-ft. torque! This engine will give you the performance and drivability you have been searching for at a price you can afford. It can be a performance upgrade for 99-07 Chevy trucks, or an engine swap into your project vehicle. You will save time and money by leaving the machine-work and assembly to us. Just bolt on your accessories and drop it in. These engines are machined and assembled for us by the guys at ATK, and backed with a 2-year unlimited mile warranty for peace of mind. Technical specifications: * Horsepower: 450+ * Torque: 420+ * Block: Seasoned OE LM7/5.3L iron * Bore/stroke: 3.800-3.820 in. x 3.622 in. * Year range: 1999-2007 * Displacement: 323 C.I.D. * Crankshaft: OEM GM 3.622 in. stroke internally balanced 24-tooth reluctor wheel * Connecting Rods: OE GM forged powder metal 6.093 in. * Pistons: Hypereutectic flat top * Piston rings: Moly * Compression ratio: 10:1 compression * Camshaft: Summit Racing Pro LS Roller * Camshaft specifications: Lift- 550/550, Duration @.050- 222/232 * Camshaft bearings: Installed and clocked to OEM position * Cylinder heads: #799 or #243 OE aluminum 64cc 2.00 in./1.55 in. valves * Freeze plugs: Brass installed and sealed * Rocker arms: OE powdered metal 1.7 ratio * Oil Galley plugs: Installed and sealed
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$3,849.99
If the time has come to replace your tired old small block Chevy, then look no further than a VEGE Chevrolet 350 c.i.d. remanufactured long block crate engine. These long blocks are an excellent foundation for budget-minded builds, are a drop-in replacement for many 1987-95 GM vehicles—and can also be retrofitted into nearly any vehicle. VEGE Chevrolet 350 c.i.d. remanufactured long block crate engines create great low-end power, making them perfect for cruisers, street rods, trucks and even your daily driver. They can produce 250 horsepower and 350 ft. lbs. torque when equipped with 600CFM carburetor and a dual plane 4-barrel intake manifold. VEGE Chevrolet 350 c.i.d. remanufactured long block crate engines feature: * Remanufactured 2-bolt main cast iron engine block * Cast crankshaft * Cast connecting rods * 12.3cc Dish hypereutectic pistons * 8.5:1 Compression ratio * Cast iron cylinder heads with 76cc combustion chambers * 1.94 in. Intake valves, 1.50 in. exhaust valves * Standard small Chevy exhaust bolt pattern * Uses standard 14mm x 1.25 thread, taper seat, 0.441 in. reach spark plugs * Hydraulic flat tappet camshaft * 0.383 in. Intake lift, 0.401 in. exhaust lift * Duration at 0.050 in. lift 194 int./202 exh. * 112 degree lobe separation * Oil pan with passenger side dipstick * Steel timing cover * Steel valve covers Drop-In replacement applications: * 1990-92 Cadillac Brougham * 1987-94 Chevrolet Blazer * 1988-95 Chevrolet C1500 * 1992-95 Chevrolet C1500 Suburban * 1988-95 Chevrolet C2500 * 1992-95 Chevrolet C2500 Suburban * 1988-95 Chevrolet C3500 * 1989-89 Chevrolet Caprice * 1987-95 Chevrolet G10 * 1987-95 Chevrolet G20 * 1988-95 Chevrolet K1500 * 1992-95 Chevrolet K1500 Suburban * 1988-95 Chevrolet K2500 * 1988-95 Chevrolet K3500 * 1987-89 Chevrolet P20 * 1988-95 Chevrolet P30 * 1987-87 Chevrolet R10 * 1987-88 Chevrolet R10 Suburban * 1989-91 Chevrolet R1500 Suburban * 1987-88 Chevrolet R20 * 1987-88 Chevrolet R20 Suburban * 1989-89 Chevrolet R2500 * 1989-91 Chevrolet R2500 Suburban * 1989-91 Chevrolet R3500 * 1995-95 Chevrolet Tahoe * 1987-87 Chevrolet V10 * 1987-88 Chevrolet V10 Suburban * 1989-91 Chevrolet V1500 Suburban * 1989-91 Chevrolet V2500 Suburban * 1989-91 Chevrolet V3500 * 1989-95 GMC C1500 * 1992-95 GMC C1500 Suburban * 1989-95 GMC C2500 * 1992-95 GMC C2500 Suburban * 1989-95 GMC C3500 * 1987-93 GMC G1500 * 1987-95 GMC G2500 * 1988-95 GMC G3500 * 1987-91 GMC Jimmy * 1988-95 GMC K1500 * 1992-95 GMC K1500 Suburban * 1988-95 GMC K2500 * 1988-95 GMC K3500 * 1988-89 GMC P2500 * 1989-95 GMC P3500 * 1987-87 GMC V1500 * 1987-91 GMC V1500 Suburban * 1987-87 GMC V2500 * 1987-91 GMC V2500 Suburban * 1987-91 GMC V3500 * 1993-95 GMC Yukon
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$2,899.99
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