Crate Engines Engine Assemblies Engines & Components

ATK Marine Rebuilt Long Block Engines

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

4.28 out of 5 stars ( 43 )

$2,709.00

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$5,209.00

ATK High Performance GM 383 Stage 1 Marine Long Block Crate Engines

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

5.0 out of 5 stars ( 5 )

$4,849.99

BluePrint Engines Marine GM 383 C.I.D. 405 HP Base Stroker Long Block Engines with Cast Components

Do you need a replacement engine for your boat? Try one of these BluePrint Engines marine GM 383 c.i.d. 405 hp stoker long block crate engines to get the job done. They feature quality-built components designed for marine use. BluePrint engines are built for speed on the open water, performance, and reliability, all in one package. Block: * 4-bolt main block * Passenger side dipstick * Square and parallel decked * Align-honed main bearing bore * Cylinders honed on computer-controlled machine to within .0002 in. straightness and roundness * Cylinders are sonic tested for thickness Rotating assembly: * SCAT cast iron crankshaft * Keith Black hypereutectic pistons * GM heavy beam connecting rods * Hastings moly rings * Balanced rotating assembly * Melling high-volume oil pump * COMP Cams roller lifter camshaft * Heavy-duty double roller timing set Cylinder heads: * Cast iron Vortec heads * Hardened retainers and springs * 2.02 in. swirl-polished intake valves * 1.60 in. swirl-polished exhaust valves * Hardened pushrods * Brezinski cast iron marine intake manifold * 9.5 to 1 compression * BluePrint Signature Series polished aluminum valve covers * Rubber coated steel oil pan * Chrome timing chain cover * Long slot rocker arms with positive locking nuts * Dyno-tested--and shipped with results

1.0 out of 5 stars ( 1 )

$7,499.00

Quicksilver Long Block Assemblies

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.

Not Yet Reviewed

$5,284.99

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$5,779.99

Quicksilver Circle Track Crate Engines

Torque wins races. Reliability wins championships. Quicksilver Circle Track crate engines are designed to deliver on both counts. These small-block V8 engines are factory sealed for fair competition and will deliver season after season of reliable racing performance with minimal maintenance. To comply with popular stock-class racing rules, Quicksilver Circle Track engines are shipped with factory seals on the intake, front cover, oil pan, and cylinder heads. Built with premium quality components, they feature a roller camshaft design and offer the best value for dirt and asphalt Circle Track racing. Order the engine needed for your build. Features: * Durable GM Gen+ remanufactured cast iron blocks -- Cost-effective and durable solution for this application -- Single-piece rear main seal -- 8-bolt 4-barrel aluminum intake manifold -- 6-quart oil pan * Roller camshaft * Hydraulic lifters * Stainless steel valves, hardened valve seats, head gaskets with stainless steel fire rings, and heavy-duty marine valve springs for extended life * 6 in. SFI-approved balancer * For off-road racing only * Shipped with a fresh fill of Quicksilver Performance Racing 25W-40 synthetic blend oil

Not Yet Reviewed

$8,544.40

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$11,276.25

BluePrint Engines Marine GM 383 C.I.D. 405 HP Stroker Dressed Long Block Engines w/Cast Components

Do you need a replacement engine for your boat? Take control of the water with BluePrint engines marine GM 383 c.i.d. 405 hp Stroker dressed long block crate engines with cast components. They get the job done with quality-built components designed for marine use. BluePrint engines are built for speed on the open water, performance, and reliability, all in one package. Block: * 4-bolt main block * Passenger side dipstick * Square and parallel decked * Align-honed main bearing bore * Cylinders honed on computer-controlled machine to within .0002 in. straightness and roundness * Cylinders are sonic tested for thickness Rotating assembly: * Cast iron crankshaft * Hypereutectic pistons * Heavy beam connecting rods * Moly rings * Balanced rotating assembly * High-volume oil pump * Roller camshaft * Heavy-duty double roller timing set * High performance harmonic balancer Cylinder heads: * Cast iron Vortec heads * Hardened retainers and springs * 2.02 in. swirl-polished intake valves * 1.60 in. swirl-polished exhaust valves * Hardened pushrods * Cast iron marine intake manifold * 9.5 to 1 compression * BluePrint Signature Series polished aluminum valve covers * Rubber coated steel oil pan * Chrome timing chain cover * Long slot rocker arms with positive locking nuts * Mechanical fuel pump * Carburetor with electric choke * Marine billet distributor * High performance coil * Stainless steel fuel line and filter * Spark plug wires and wire looms * Spark plugs * Cast iron circulating water pump * Dyno-tested--and shipped with results

Not Yet Reviewed

$8,999.00