Availability
Classic Ford 302 stock drop-in long block crate engines from ATK High Performance are shipped to you fully dressed. These are basic stock engines with moderate horsepower and torque based off the 80-86 Ford 302 engine. These engines typically make about 240 horsepower on the dynamometer. Additional specs: * Block: seasoned OE roller block * Bore/Stroke: up to 4.060 x 3.000 * Displacement: 302 c.i.d. * Crankshaft: OE Ford cast late model crankshaft (50 oz. imbalance) * OE steel connecting rods 5.4 in. stock bolts * Pistons: hypereutectic * Piston rings: moly rings * Compression Ratio: 8.5:1 * Camshaft: hydraulic flat tappet * Camshaft specifications: OE stock * Camshaft bearings installed and blocked to OEM position * Cylinder heads: OE cast iron * Freeze plugs: brass installed and sealed * Rocker arms: stamped steel 1.5 ratio * Oil galley plugs: installed and sealed * Oil pan: OE 5 qt. front sump * Weight: 430 lbs. * For engine break-in please follow the ATK break-in procedure that is included with the engine.
( 32 )
$3,998.99
Give your ride the extra twist only a stroker can deliver with ATK High-Performance GM 383 Stroker 415 hp Stage 1 long block crate engines. These engines feature quality components and professional assembly to give your car or truck the kick it needs. They produce up to 460 ft.-lbs. of torque—that's enough to get you rolling in a cloud of tire smoke! ATK GM 383 Stroker 415 hp Stage 1 long block crate engine specs: * Seasoned OE 4-bolt main roller block * 4.040 x 3.750 bore/stroke * 383 c.i.d. displacement * Scat nodular iron crankshaft (3.750 in. stroke; one-piece; externally balanced rear/internal front) * Scat 4340 forged I-beam connecting rods (5.700 in.) with ARP bolts * Hypereutectic pistons * Moly piston rings with 9.7:1 compression ratio * Hydraulic roller camshaft with 220/224 duration at 0.050, 0.528 in./0.536 ex. lift, 112LSA * Installed camshaft bearings clocked to OEM position * ATK high-performance aluminum cylinder heads with 2.02/1.60 ex. valves * Installed and sealed brass freeze plugs (oil galley plugs also installed and sealed) * Billet aluminum 1.6 ratio rocker arms * 5 qt. OE oil pan * 350 lbs.
( 4 )
$4,498.99
ATK High Performance Chevy LQ9 6.0L short blocks with OE flat top pistons are great beginnings for your mild street build, or just as a replacement for a tired short block. ATK takes the hard work out of your project by selling blocks that are ready to complete yourself. Every great build needs a solid foundation. Start yours with one of ATK's Chevy LQ9 6.0L short blocks. Technical specifications: * Block: Seasoned 6.0L cast no. 364 or 184 * Bore/stroke: 4.030 x 3.622 * Year range: 2001-2007 * Displacement: 370 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. stock bolts * Pistons: OE hypereutectic flat top with no valve reliefs * Piston rings: Moly rings * Compression ratio: 64cc = 10.7:1, 68cc = 10.2:1, 72cc = 9.8:1 * Camshaft bearings: Installed and clocked to OEM position * Freeze plugs: Brass installed and sealed * Oil galley plugs: Installed and sealed * Weight: 285 lbs.
( 6 )
$3,198.99
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
( 5 )
$4,417.99
ATK Chevy LM7 383 short blocks support your build with a solid foundation. Produced for the 1999-2007 trucks, LM7 engines are very popular engines to swap into musclecars and other LS swap vehicles. ATK High Performance Chevy LM7 383 short blocks are built for naturally aspirated engines up to 700 hp. Your ATK LM7 engine may include these components for optimal performance: * Block: GM LM7 5.3L * Bore/stroke: 3.903 x 4.000 * Displacement: 383 cu. in. * Crankshaft: K1 4340 forged steel, internally balanced 24-tooth * Connecting rods: Scat Premium Pro 4340 forged I-beam with ARP 8740 bolts * Pistons: Wiseco 2618 forged aluminum with coated skirts * Piston rings: Wiseco GFX (alloy steel top ring) * Camshaft bearings: Installed and clocked to OEM position * Freeze plugs: Brass installed and sealed * Oil galley plugs: installed and sealed * Weight: 285 lbs.
Not Yet Reviewed
$4,098.99
With ATK High Performance Chevy LM7 5.3L 385 hp long block crate engines expect big mid to upper end power and a noticeable idle. They were designed to be performance upgrades for a 1999-2007 Chevy truck LM7 or an LS swap in a hot rod. Technical specifications include: * Horsepower: 385+ * Torque: 390+ * Block: GM 5.3L iron LM7 * Bore/stroke: Up to 3.809 x 3.622 * Year range: 1999-2007 * Displacement: 323 c.i.d. * Crankshaft: OEM GM 3.622 in. stroke internally balanced 24 tooth reluctor wheel .857 in. flange * Connecting rods: OE GM forged powder metal 6.093 in. stock bolts * Pistons: Hypereutectic dish * Piston rings: Moly rings * Compression ratio: 9.5:1 compression * Camshaft: Hydraulic roller * Camshaft specifications: Custom grind * Camshaft bearings: Installed and clocked to OEM position * Cylinder heads: OE aluminum 61.15cc 1.89/1.55 * Freeze plugs: Brass installed and sealed * Rocker arms: OE powdered metal 1.7 ratio * Oil Galley plugs: Installed and sealed * Weight: 385
( 15 )
$4,189.99
If you don't have the time or means for a build, ATK High Performance Ford 347 Stroker Stage 3 long block crate engines are the answer. They'll help anyone looking for a complete motor with reliable, on-street high performance. These fully-dressed (Stage 3) engines work with power accessories, produce a noticeable idle, and include all the Stage 2 components. They may also add in the following parts (among others): carburetion, filters, and spark system. ATK Ford 347 Stroker 450 hp Stage 3 long block crate engines specs: * 440 lbs.-ft. torque * Seasoned OE roller block * 4.040 x 3.400 bore/stroke * 347 c.i.d. displacement * Nodular iron crankshaft (3.400 in. stroke; one-piece externally balanced; 28 oz.) * 4340 forged I-beam connecting rods (5.400) with ARP bolts * Forged flat-top pistons with four valve reliefs * Moly piston rings with 10.1:1 compression ratio * Hydraulic roller camshaft with 231/235 duration at 0.050, 0.544 in./0.565 ex. Lift, 112LSA * Installed camshaft bearings clocked to OEM position * Dart Pro 1 aluminum cylinder heads with 58cc/195cc port volume and 2.02/1.60 in. valves * Installed and sealed brass freeze plugs (oil galley plugs also installed and sealed) * Billet aluminum 1.6 ratio full roller rocker arms * 5 qt. front sump OE oil pan * 430 lbs.
( 1 )
$8,099.99
ATK Chevy LM7 5.7L/347 short blocks provide a solid foundation for your build. Produced for the 1999-2007 trucks, LM7 engines are very popular engines to swap into musclecars and other LS swap vehicles. ATK High Performance Chevy LM7 5.7L/347 short blocks are built for naturally aspirated engines up to 700 hp. Your ATK LM7 engine may include these components for optimal performance: * Block: GM LM7 5.3L * Bore/stroke: 3.903 x 3.622 * Displacement: 5.7/347 c.i.d. * Crankshaft: OE reground 3.622 in., internally balanced 24-tooth * Connecting rods: Scat Premium Pro 4340 forged I-beam with ARP 8740 bolts * Pistons: Wiseco 2618 forged aluminum with coated skirts * Piston rings: Wiseco GFX (alloy steel top ring) * Camshaft bearings: Installed and clocked to OEM position * Freeze plugs: Brass installed and sealed * Oil galley plugs: installed and sealed * Weight: 285 lbs.
( 2 )
$3,298.99
Start your build with ATK High Performance Ford 347 Stroker Stage 2 long block crate engines. They'll help anyone looking to complete their build with reliable, on-street high performance. These mid-dressed (Stage 2) engines work with power accessories, produce a noticeable idle, and may include (among other parts) an intake manifold, distributor, water pump, front damper, and flexplate. ATK Ford 347 Stroker 450 hp Stage 2 long block crate engines specs: * 440 lbs.-ft. torque * Seasoned OE roller block * 4.040 x 3.400 bore/stroke * 347 c.i.d. displacement * Nodular iron crankshaft (3.400 in. stroke; one-piece externally balanced; 28 oz.) * 4340 forged I-beam connecting rods (5.400) with ARP bolts * Forged flat-top pistons with four valve reliefs * Moly piston rings with 10.1:1 compression ratio * Hydraulic roller camshaft with 231/235 duration at 0.050, 0.544 in./0.565 ex. Lift, 112LSA * Installed camshaft bearings clocked to OEM position * Dart Pro 1 aluminum cylinder heads with 58cc/195cc port volume and 2.02/1.60 in. valves * Installed and sealed brass freeze plugs (oil galley plugs also installed and sealed) * Billet aluminum 1.6 ratio full roller rocker arms * 5 qt. front sump OE oil pan * 375 lbs.
Not Yet Reviewed
$7,364.99
ATK High Performance Engines offers GM 350 Vortec bare blocks with the following specifications: * Block: 100 percent new bare block with one-piece rear main seal * Bore: 4.000 in. (4.0003-4.0008 in. -- Pistons size vary, final honing may be required) * Maximum bore: 4.060 in. recommended * Displacement: 350 cu. in. * Main journal type: Chevy 350 * Engine block material: Premium iron alloy * Engine block style: Aftermarket, based off the Vortec 350 roller block * Engine block deck height: Standard deck * Engine oiling system: Priority main * Fuel pump boss: Yes * Main bolt style: 4-bolt * Main caps included: Yes * Main cap material: Cast iron * Main cap fasteners included: Yes * Main bearings included: No * Camshaft bearings: Dura-Bond, installed and clocked to OEM position * Freeze plugs: Brass, installed and sealed * Oil galley plugs: Installed and sealed * Roller camshaft compatible: Yes * Stroker clearanced: Yes, but the assembler must always check, as components differ
Not Yet Reviewed
$1,898.99
ATK High Performance Chrysler 408 Magnum 465 hp Stage 3 long block crate engines are a great way to upgrade your old Mopar-equipped vehicle. These Magnum-based 408 c.i.d strokers have a lopey idle and great low/mid-range power, just perfect for a muscle car or truck. The technical specs for ATK Chrysler 408 Magnum Stage 3 crate engines are: * Horsepower: 465 hp * Torque: 535 ft.-lbs. * Block: seasoned OE 1993-2001 Magnum block * Bore/stroke: 4.040 x 4.000 * Displacement: 408 c.i.d. * Crankshaft: nodular iron 4.000 in. stroke internally balanced * Connecting Rods: 4340 forged I-beam with ARP 8740 Bolts * Pistons: forged * Piston rings: moly rings * Compression ratio: 10.1:1 compression * Camshaft: Hydraulic roller * Camshaft specifications: 229/233 @.050 in., .520 intake/.515 exhaust * Camshaft bearings: installed and clocked to OEM position * Cylinder heads: Edelbrock Performer RPM aluminum 58cc/176cc 2.02/1.60 * Freeze plugs: brass installed and sealed * Rocker arms: billet aluminum 1.6 full roller * Oil galley plugs: installed and sealed * Oil pan: OE 5 qt. center sump * Weight: 430 lbs.
( 2 )
$9,882.99
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
Modal Header
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
