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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

4.4 out of 5 stars ( 45 )

$5,153.99

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$5,300.99

ATK High Performance GM 383 Vortec 390 HP Stage 3 Long Block Crate Engines

Pack Vortec power and stroker torque in your ride with ATK High Performance GM 383 Vortec 390 hp Stage 3 long block crate engines. These engines are hand-built and balanced to ensure a strong-running, reliable engine for your daily driver or hot rod. The 460 ft.-lbs. of twist make these extremely versatile mills that are at home in a towing rig, muscle car, or street rod. Get back out on the road with the ground-pounding power that only a stroker can give you. Engine specifications: * HP: 390 * TQ: 460 * Block: OE roller block 4-bolt main 1-pc seal 1996-2000 * Bore/Stroke: 4.040 in. x 3.750 in. * Displacement: 383CI * Crankshaft: Scat nodular iron external balance rear of crank/internal balance front of the crank * Rods: Scat I Beam 5.7 in. rods with ARP 8740 bolts * Pistons: Hypereutectic 9.5:1 compression * Rings: Moly * Camshaft: Hyd. Roller * Cam Specs: 220/224 @50 .495in/.502ex 110LSA * Timing Chain: Double roller * Cylinder Heads: Dart vortec cast iron 67cc/165cc 2.02/1.60 * Rocker Arms: Stamped steel 1.5 ratio * Oil Pan: Rear sump 5qt (not for Chevelles with steering behind crossmember, some Corvettes and 62-67 Chevy II's) * Oil Pump: Melling STD volume * Balancer: Internally balanced – PowerBond #PB1046-N * Flexplate: Externally balanced – Pioneer #FRA-159 (with scat kit) * Intake Manifold: ATK HP dual plane * Distributor: HEI (Iron Gear) * Water Pump: OE long pump * Carburetor: Quick Fuel 680CFM vacuum secondary's electric choke #HR-680 * Fuel Pump: Holley mechanical 110GPH #12-327-11 * Spark Plugs: Autolite #605 * Spark Plug Wires: 8mm Engine info: * Oil: Conventional/Non-Synthetic 10W30 * Oil Filter: Wix or K&N * Timing: 34-36 Degrees * Spark Plug Gap: .035 in. * Firing Order: 18436572 * Octane: 91+ * Stall Converter: Stock * Exhaust: 1 5/8 Headers

Not Yet Reviewed

$5,998.99

Ford Performance Parts 363 C.I.D. Boss Short Block Assemblies

Start with the right foundation for your Blue Oval build--start with Ford Performance Parts 363 c.i.d. Boss short block assemblies. Build a powerful 8.2 in. deck engine for your vintage muscle, street rod, Fox body, or late model Mustang by starting with the same short block used in the 500 hp Z363 crate engines. These Ford Performance Parts Boss short block assemblies take the bore out to 4.125 in. for 363 stroked cubes of power. Plus, strength from within is provided by the forged crankshaft and I-beam connecting rods. Power your next project with Ford Performance Parts 363 c.i.d. Boss short block assemblies. Additional technical specifications: * Engine type: 302 based small block Ford * Bore x stroke: 4.125 in. bore x 3.400 in. stroke * Block: Boss 4-bolt main block M-6010-BOSS302 * Piston to Deck Height: .01 in." below deck (nominal) * Crankshaft: SCAT forged steel * Connecting rods: SCAT forged steel I-beam connecting rods with floating pins and ARP bolts * Pistons: Mahle forged aluminum, 1.5mm, 1.5mm, 3.00mm rings, valve reliefs for X306, X307, Z304DA, Z304P, N351, and other inline valve Windsor cylinder heads * Pistons designed for 20 degree valve angle heads and will fit stock or most spread valve guide centerlines; 6cc valve pockets, check piston to valve clearance * Compatible with most aftermarket performance cylinder heads * Designed for M-6049-X306//X307/Z304DA/Z304P and N351 cylinder heads. Not designed for production 302/351W or M-6049-Y302/Y303/X302/X303/X304/X305 cylinder heads * Hydraulic roller camshaft compatible * Recommended cylinder head fasteners M-6065-BOSS head bolts or M-6014-BOSS studs depending on application * Requires head gaskets M-6051-R351 * Internally balanced; requires "0" balance flywheel and damper * High performance harmonic balancer M-6316-D302 recommended * High-volume oil pump M-6600-D2 recommended * 302 bolt pattern oil pan and timing cover * Built with all new parts * Photo and specifications may vary

5.0 out of 5 stars ( 1 )

$6,005.99

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 )

$7,199.00

ATK High Performance GM 383 Stroker 415 HP Stage 3 Long Block Crate Engines with EFI

ATK High Performance GM 383 Stroker 415 hp Stage 3 long block crate engines with EFI are designed for better drivability and trouble-free cold starts with no tuning required, regardless of elevation, driving habits, or part swap! Based around FiTech Self-Learning EFI systems, these engines come complete from throttle body down to the oil pan. The only thing you will need is to supply is the fuel system--in line, in tank, or the FiTech Fuel Command Center. They are dyno-tested with your EFI system and ready to go! Typically ATK GM 383 Stroker 415 hp complete long blocks consist of: * Seasoned OE block with 4-bolt mains * Scat nodular iron crankshaft * Scat I-beam connecting rods * Hypereutectic pistons * Chromoly piston rings * Hydraulic roller camshaft * ATK High Performance aluminum cylinder heads with 2.020 in. /1.600 ex. valves * Billet roller rocker arms * Timing set * Oil pan, oil pump and pick-up tube * Valve covers * Flexplate * Performance intake manifold * Distributor HEI * Long water pump * Front damper * FiTech Go EFI 4-600 hp * Spark plugs and wires * Dyno test/tune

Not Yet Reviewed

$6,098.99

ATK High Performance GM 383 Stroker 525 HP Stage 1 Long Block Crate Engines

ATK High Performance GM 383 Stroker 525 hp Stage 1 long block crate engines are power transplants for your high performance projects. ATK Stage 1 or base engines are designed for builders that have their own component parts already, and who are interested in completing out the build themselves. GM base engines typically consist of the following: short block, camshaft, timing set, cylinder heads, valve covers, timing cover, oil pan, oil pump, and pick up tube. Engine specifications: * Horsepower: 525 * Torque: 515 * Block: OE roller block 4-bolt main one-piece seal 1996-2000 * Bore/stroke: 4.040 x 3.750 in. * Displacement: 383 * Crankshaft: Scat 4340 forged external balance rear of crank/internal balance front of the crank * Rods: Scat 4340 forged H-beam with ARP 8740 bolts * Pistons: Forged 10.2:1 compression * Rings: Moly * Camshaft: Hydraulic roller * Cam specs: 246/250 at 50 .603intake/.609exhaust 110LSA * Timing chain: Double roller * Cylinder heads: ATK American-made aluminum 70cc/210cc 2.02/1.60 * Rocker arms: Billet aluminum 1.6 roller rockers * Oil pan: Moroso 7qt. with windage tray * Oil pump: Melling * Flexplate/flywheel: Pioneer external balance 168 tooth (with Scat kit)

Not Yet Reviewed

$7,198.99

ATK High Performance Chevy 632 Short Blocks

ATK High Performance Chevy 632 short blocks are based on dyno proven combinations built with name brand parts. Each short block is hand-built and inspected for precision tolerances. Rotating assemblies are balanced; and stroker builds are oversize of stock bore and stroke. Short blocks are shipped strapped on a wooden pallet crate. Engine Specifications: * Block: Dart Big M Sportsman 4-bolt main 2-piece rear main seal * Bore/Stroke: 4.600 in. x 4.750 in. * Displacement: 632CI * Crankshaft: Scat 4340 forged internally balanced * Rods: Scat 4340 forged H-beam with ARP 8740 bolts * Pistons: 2618 forged +3.4cc flat tops * Compression ratios: 112cc = 11.3:1 / 118cc = 10.8:1 / 121cc = 10.6:1 (can vary due to deck height/gasket thickness) * Rings: Plasmamoly * Camshaft bearings: Dura-Bond, installed and clocked to OEM position * Freeze plugs: Brass, installed and sealed * Oil galley plugs: Installed and sealed Recommended Components: * Balancer: Internal balance * Flexplate / Flywheel: Internal balance * Head gasket: .038 in. or per application Engine Info: * Oil: 10W30 Conventional / Non-Synthetic for first 3,000 miles * Oil filter: Wix or K&N per application * Head gaskets: .038 in. or per application

Not Yet Reviewed

$7,526.99

Ford Performance Parts X2347 Street Cruiser Dressed Long Block Crate Engines

The most popular crate engine size just got better and easier with Ford Performance Parts X2347 Street Cruiser dressed long block crate engines. The proven 347 stroker combination has been optimized for street cruising with a perfectly matched cam/cylinder head/intake manifold/carburetor combination that runs on pump gas. Guesswork and installation issues are eliminated with a complete intake and distributor package that has been developed and tested by Ford Performance engineers. The X2347D engines are hand-assembled and dressed out with the best aftermarket performance parts translating into 360 hp and 400 lb.-ft. of torque at the crank! Ford Performance X2347 main features: * 4.030 in. bore and 3.400 in. stroke * Boss 302 8.2 in. deck height block * SCAT forged steel crankshaft * SCAT forged steel I-beam connecting rods * Forged Mahle pistons with floating wrist pins * Ford Performance aluminum, 64 cc chamber cylinder heads * 1.94 in. intake valves, 1.54 in. exhaust valves * 9.6:1 compression ratio * Edelbrock Performer RPM Air Gap manifold * Holley Street Avenger 570 cfm carburetor * 1.6:1 ratio roller rocker arms * Ford Racing black satin aluminum valve covers * MSD billet distributor * Ford Racing 9mm black spark plug wires * Hydraulic roller Comp Cams .533 in. lift intake and exhaust with 206 degree duration intake and exhaust at .050" lift * Double roller timing chain set * Ford Racing SFI-approved harmonic damper * High performance front or rear sump 7-quart capacity oil pan with windage tray and scraper * Maximum recommended rpm: 6,000 rpm * Internal balance; use neutral balance flywheel

Not Yet Reviewed

$14,029.71

ATK High Performance Pro Street 632 800 HP Dressed Crate Engines

ATK High Performance Pro Street 632 c.i.d. 800 hp completely dressed crate engines are sure to turn heads! Hand built; they are stuffed with name brand quality components you can trust to ensure performance. Engine specifications: * Block: Dart Big M 10.2 deck, 4-bolt main, 2-piece seal * Bore/stroke: 4.600 in. x 4.750 in. * Displacement: 632 * Crankshaft: Scat 4340 forged internal balance * Rods: Scat 4340 forged H-beam with ARP 8740 bolts * Pistons: Forged 10.3:1 compression * Rings: Moly * Camshaft: Hydraulic roller * Cam specs: 267/277 at 50 .680 intake/.680 exhaust 110LSA * Timing chain: Double roller * Cylinder heads: Dart Pro 1 aluminum 121cc/345cc 2.300/1.880 * Rocker arms: Howards billet aluminum 1.7 roller rockers * Oil pan: Moroso 7 qt. street/strip pan with windage tray * Oil pump: Melling high volume * Balancer: Power Bond SFI 7.950 in. * Intake manifold: Edelbrock Super Victor * Distributor: Pro billet (iron gear) * Carburetor: Quick Fuel 1150 cfm mechanical secondary * Spark plugs: Autolite #3934 * Spark plug wires: 8mm

Not Yet Reviewed

$16,499.99

ATK High Performance Dart Ford 427 C.I.D. Short Blocks

ATK High Performance Dart Ford 427 c.i.d. short blocks are assembled with forged 26cc dished pistons and offer these engine specifications: * Block: Dart SHP 351W SBF -- 4-bolt -- One-piece seal -- 9.500 in. deck * Bore/stroke: 4.125 in. x 4.000 in. * Displacement: 427 cu. in. * Crankshaft: Scat 4340 forged internally balanced * Rods: Scat 4340 H-beam with ARP 8740 bolts * Pistons: 2618 forged, 26cc dished * Compression ratios: 58cc = 10.4:1/64cc = 9.8:1/70cc = 9.3:1 -- Can vary due to deck height/gasket thickness * Plasma moly rings * Camshaft bearings: Installed and clocked to OEM position * Freeze plugs: Installed and sealed * Oil galley plugs: Installed and sealed

Not Yet Reviewed

$7,800.99

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