Crate Engines, Short Blocks, Engine & Transmission Combos

ATK High Performance Ford 302 300 HP Stage 2 Long Block Crate Engines

Replace your old, tired mill with ATK High Performance Ford 302 300 hp Stage 2 long block crate engines to give your old ride new life. These engines are designed to be perfect replacements for your old 302, but with a bit more kick. The upgraded engines produce 300 hp and 336 ft.-lbs., while still maintaining a smooth idle and great driving manner. These mills are perfect for daily drivers or mild-mannered street rods. Ford 302 300 hp Stage 2 long block crate engines feature: * Handpicked, remanufactured blocks * OE cast iron cylinder heads * Intake manifold * OE crankshaft and connecting rods * Hypereutectic pistons * Hydraulic roller camshaft * Cam lift- .498 int./.498 exh. * Cam duration @ 0.50- 219 int./219 exh. * 9.0:1 compression * Distributor * Valve covers * Timing cover and timing set * Oil pan, pump, and pickup tube * Water pump * Front damper and flexplate

5.0 out of 5 stars ( 4 )

$4,210.99

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Chevrolet Performance ZZ502 C.I.D. Deluxe Long Block Crate Engines

Here, at last, is the king of all big block crate engines from Chevrolet Performance. These 502 cu. in. engines are available unassembled or fully assembled. Each version makes extensive use of aluminum to keep weight down—including aluminum heads, intake, water pump, and valve covers. Additionally, ZZ502 c.i.d. deluxe long block crate engines are full of heavy-duty parts, such as: forged aluminum pistons, forged shot-peened steel connecting rods with 7/16 in. bolts, forged steel crankshaft, 14 in. automatic transmission flexplate, 4-bolt main blocks, stainless steel valves, 6 qt. oil pan, and windage trays. The complete Chevrolet Performance engine kits come with Gen 6 four-bolt main blocks with one-piece rear main seals. Hydraulic roller camshaft specs are: .527 in. intake lift, .544 in. exhaust lift; the duration at .050 in. for intake is 224, and 234 for exhaust with a 112-degree lobe centerline. Other features include a single roller timing chain, aluminum large oval port, and 110cc combustion chambered heads. Intake runner volume is 290cc; stainless steel valves are installed, with 2.25 in. intake side and 1.88 in. on the exhaust side. Valve springs are rated at 140 lbs. closed and 368 lbs. open, good for up to .680 in. lift. These heads have exhaust crossovers. Aluminum high-rise dual-plane square bore bolt pattern intake manifolds and an 870 cfm carburetor are also included.

4.0 out of 5 stars ( 4 )

$14,846.00

ATK High Performance GM 350 Vortec 315 HP Stage 1 Long Block Crate Engines

Give your truck a little more punch with one of these ATK High Performance GM 350 Vortec 315 hp Stage 1 long block crate engines. These engines are built from the ground up to replace your old, tired mill with a more modern, efficient engine. ATK hand-builds and balances each one these engines to ensure that they are great-running, reliable engines that will get you back on the road. Engines include: * Handpicked, remanufactured blocks * Cast iron Vortec cylinder heads * OE crankshaft and connecting rods * Hypereutectic pistons * Hydraulic roller camshaft * Valve covers * Timing cover and timing set * Oil pan, pump, and pickup tube

3.78 out of 5 stars ( 9 )

$2,988.99

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Chevrolet Performance ZZ632/1000 Deluxe Long Block Crate Engines

Chevrolet Performance's ZZ632/1000 deluxe long block crate engines are their biggest and baddest big blocks! They start with a tall deck Sportsman Bowtie block and an all-forged roller assembly, then add a hydraulic roller camshaft and high-flow spread-port CNC-machined cylinder heads derived from Pro Stock racing technology. The RS-X design cylinder heads feature symmetrical ports to produce similar power from all eight cylinders. ZZ632 crate engines have a crank-trigger ignition system with coil-near-plug ignition coils mounted on a unique valley plate. Included is a pre-programmed, self-learning control system for precise fuel control and amazing output on premium pump gas. These big block engines reach peak power at 6,600 rpm and rev to a recommended maximum of 7,000 rpm. Technical specs: * Bore and stroke: 4.600 in. by 4.750 in. * Power is 1,004 hp at 6,600 rpm * Torque is 876 lbs.-ft. at 5,600 rpm * Cast iron block with 4-bolt mains * Forged 4340 steel crankshaft * Forged steel H-beam connecting rods * Forged aluminum 2618 alloy pistons * Aluminum high-rise single-plane intake manifold * Dominator 4500-style throttle body * 86 lb.-hr. fuel injectors * Billet steel hydraulic roller camshaft * Valve lift of 0.780 in. intake and 0.782 in. exhaust * Camshaft duration at 0.050 in. is 270 intake and 287 exhaust * Aluminum RS-X symmetrical spread-port cylinder heads with 70cc chambers * Titanium 2.450 in. intake/1.800 in. exhaust valves with a 5/16 in. stem * 58X reluctor crank-triggered, coil-near-plug ignition * Compression ratio of 12.0:1 * Forged aluminum shaft-mount roller rocker arms with 1.8:1 ratio * Aluminum water pump * Steel 8-quart oil pan * Recommended fuel: 93 octane or higher

5.0 out of 5 stars ( 2 )

$32,935.35

ATK High Performance GM 350 345 HP Stage 3 Long Block Crate Engines

Give your old ride new life with these ATK High Performance GM 350 345 hp/400 lbs.-ft. Stage 3 long block crate engines. These engines are built to perform and look great without breaking your budget. Each engine is expertly assembled, balanced, blueprinted, and topped with quality components, making it a solid, reliable mill to power your muscle car, street rod, or pickup. ATK GM 350 345 hp Stage 3 long block crate engines include: * Handpicked, OE remanufactured block * ATK cast iron 75cc/165cc 1.94/1.50 heads * ATK dual plane intake manifold * Quick Fuel 680 cfm vacuum secondary carburetor * OE crankshaft * OE 5.7 in. powder metal connecting rods * Hypereutectic pistons * Hydraulic roller camshaft .495in/.502ex 110LSA * HEI Distributor, plug wires and plugs * Holley 110 GPH mechanical fuel pump * Valve covers * Timing cover and double roller timing set * 5 qt. oil pan, high volume oil pump with pickup tube * OE style long water pump * PowerBond 8 in. balancer and 168 tooth flexplate

3.5 out of 5 stars ( 2 )

$4,504.99

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Chevrolet Performance LSX376 Crate Engines

You're track-ready with extreme performance GM LSX376 crate engines. At home on the street and on the strip, these value-driven Chevrolet Performance crate engines offer lower-compression forged aluminum pistons, a tough bottom end, and high-flow heads. LSX376 engines make a perfect foundation for supercharging, turbocharging, and nitrous--all you need to do is supply the boost! Does your muscle deserve the LSX touch? Yes! Get the strength and power to build a winner with these features: * Race-bred LSX Bowtie block * High-flow LS3 cylinder heads * Blower-friendly 9.0:1 forged pistons * 14 in. automatic transmission flexplate * Unique LSX376 valve covers

Not Yet Reviewed

$13,568.04

ATK High Performance GM 350 390 HP Stage 2 Long Block Crate Engines

Awesome performance and awesome looks combine in ATK High Performance GM 350 390 hp Stage 2 long block crate engines. They are topped with trick looking parts and have the power to back them up. These engines are hand-assembled and balanced to help them put out 390 hp and 420 ft.-lbs. of torque that will tear up the street or strip. Whether you are looking to pack some more power in your street rod, muscle car, or truck ATK has you covered. ATK GM 350 390 hp Stage 2 long block crate engines include: * Handpicked, remanufactured block * ATK High Performance aluminum cylinder heads with 2.020 in. /1.600 ex. valves * Intake manifold * OE crankshaft and connecting rods * Hypereutectic pistons * Hydraulic roller camshaft * Cam lift- .528 int./.536 exh. * Cam duration at 0.50- 220 int./224 exh. * 10.0:1 compression * Distributor * Valve covers * Timing cover and timing set * Oil pan, pump, and pickup tube * Water pump * Front damper and flexplate

4.0 out of 5 stars ( 1 )

$4,298.99

Summit Bucks

Ford Performance Parts Megazilla Crate Engines

The Ford Performance Parts engine team has unleased the 7.3L Megazilla crate engine! The Megazilla features the Ford Performance 7.3L intake manifold, CNC-ported cylinder heads, forged pistons and connecting rods. The Megazilla crate engine cranks out 612 hp and 670 lbs.-ft. of torque in a streetable package running on premium pump gas. Megazilla crate engine features: * 7.3L displacement * 10.5:1 compression * (M-6049-SD73P/M-6050-SD73P) CNC-ported aluminum cylinder heads * (M-9424-73LP) low-profile intake manifold * (M-9926-M5292) 92mm throttle body * Mahle forged pistons * Callies H-beam forged connecting rods * (M-6303-SD73) production steel crankshaft * (M-6250-SD73A) hi-performance 7.3L camshaft w/ VCT delete * (M-6010-SD73) production cast iron block Peak power output (J607 standard): * 612 hp @ 5,580RPM * 670 lbs.-ft. of torque @ 3,920RPM * Over 500 lbs.-ft. of torque from 2,500 rpm to 6,000 rpm Assembly includes: * Coils/plug wires/spark plugs * Production oil pan * (M-6038-73) shipping/storage cradle * Production engine wiring harness Additional information: * Bellhousing bolt pattern same as the Ford 4.6/5.4 and Coyote 5.0L * For control packs, please refer to part number: M-6017-73M and M-6017-73A (sold separately) * Custom calibration required * For starter, please refer to part number: M-11000-SD73 (sold separately) * For FEAD, please refer to part number: M-8600-SD73 and M-8600-SD73AC (sold separately) This part is designed and intended for competition use only or off-highway use only. It should not be installed on a vehicle that is driven on public roads and highways. Installation of this part on a vehicle driven on public roads and highways is likely to violate U.S. and Canadian laws and regulations relating to motor vehicle emissions.

Not Yet Reviewed

$22,728.99

ATK High Performance Chrysler 408 A Stroker Short Blocks

Start your build with a rock-solid bottom-end with these ATK High Performance Chrysler 408 A Stroker short blocks. These short blocks are built using high-quality components that are all hand-fit and balanced to create a reliable bottom-end that's ready to get your musclecar or truck moving. Just top the engine off with your own parts to build a custom engine that is designed to meet your goals. These ATK High Performance Chrysler 408 A Stroker short blocks include the following: * Handpicked and seasoned OE Magnum 1993-2001 blocks * Aligned and hone main bores * Nodular iron internally balanced crankshaft * 4.00 in. stroke * 4340 forged I beam connecting rods with ARP 8740 bolts * Hypereutectic pistons with 23.5cc dish * Plasma-moly rings * Approximate Compression Ratios: 62cc = 9.7:1 / 68cc = 9.2:1 / 72cc = 8.9:1

4.75 out of 5 stars ( 4 )

$2,998.99

ATK High Performance Chevy LQ9 6.0L Short Blocks

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.

4.29 out of 5 stars ( 7 )

$3,198.99

ATK High Performance Ford 302 300 HP Stage 1 Long Block Crate Engines

Replace your old, tired mill with ATK High Performance Ford 302 300 hp Stage 1 long block crate engines and give your old ride new life. These engines are designed to be perfect replacements for your old 302, but with a bit more kick. The upgraded engines produce 300 hp and 336 ft.-lbs., while still maintaining a smooth idle and great driving manner. These mills are perfect for daily drivers or mild-mannered street rods. Ford 302 300 hp Stage 1 long block crate engines feature: * Handpicked, remanufactured blocks * OE cast iron cylinder heads * OE crankshaft and connecting rods * Hypereutectic pistons * Hydraulic roller camshaft * Cam lift- .498 int./.498 exh. * Cam duration @ 0.50- 219 int./219 exh. * 9.0:1 compression * Valve covers * Timing cover and timing set * Oil pan, pump, and pickup tube

4.33 out of 5 stars ( 12 )

$3,639.99

ATK High Performance Chrysler 360 Magnum 320 HP Stage 3 Long Block Crate Engines

Street cruisers really can't ask for more than they'll find in ATK high performance Chrysler 360 320 hp Stage 3 long block crate engines. They're packed with the finest, well-matched components, so you can drop the engine into your project and fire it up. ATK has outfitted the blocks as completely as possible to save you time and headaches. These complete Stage 3 long blocks typically include carburetion, spark plug wires, and plugs. ATK Chrysler 360 engines include: * Seasoned OE Magnum block * OE-cast crankshaft * OE steel connecting rods * Hypereutectic pistons * Piston rings * Hydraulic roller camshaft * Magnum 65cc cylinder heads * Steel rocker arms 1.6 pedestal * Brass freeze plugs installed and sealed * Oil galley plugs installed and sealed

4.0 out of 5 stars ( 3 )

$5,798.99

Summit Bucks

Chevrolet Performance 5.7L 350 C.I.D Turnkey Long Block Crate Engines

This Chevrolet Performance 5.7L 350 c.i.d. HO turnkey long block crate engine is assembled with brand new components from General Motors. Starting with a new GM 4-bolt main block, it includes the cast iron high-flow Vortec heads, dual-plane aluminum intake manifold, 9.0:1 compression ratio, and a hydraulic flat tappet camshaft that provides you 333 hp and 381 lbs.-ft. of torque. It includes a GM HEI distributor, a 670 cfm Holley carburetor, and is shipped with a 153-tooth small diameter flexplate. Engine specs: * Block: Cast Iron, 4-bolt main caps, 1-piece rear seal * Compression Ratio: 9.1:1 * Crankshaft: Cast Nodular, 3.480 in. Stroke * Duration at 0.050 I/E: 212 / 222 * Camshaft Lift: 0.435 in. / 0.460 in. Hydraulic Flat Tappet * Heads, Chamber Size: Vortec iron, 64cc * Horsepower: 330 hp at 5,000 rpm * Intake Manifold: Aluminum Dual Plane * Torque: 380 lbs.-ft. at 3,800 rpm * Valves (I/E) (in.): 1.940 / 1.600 * Condition: New

Not Yet Reviewed

$7,311.30

Chevrolet Performance LS3 6.2L 376 C.I.D 525 HP Engine Assemblies

Chevrolet Performance LS3 6.2L 376 c.i.d. engine assemblies use an impressive 10.7:1 compression ratio to put out 525 hp at 6,200 rpm and 486 lbs.-ft. of torque at 5,200 rpm. They feature a cast aluminum block with a nodular iron crankshaft, powdered metal connecting rods, and hypereutectic pistons. The steel hydraulic roller camshaft has a .525 in. intake and .525 in. exhaust valve lift, with a 226 degree intake and 236 degree exhaust valve duration at .050 in. cam lift. Assemblies also include: * Ignition coil packs * Spark plug wires * Spark plugs * Intake manifold * Fuel injectors * Throttle body * Exhaust manifolds * 14 in. flexplate * Front timing cover * Aluminum water pump * Harmonic balancer * Passenger side right hand dipstick and tube

Not Yet Reviewed

$12,081.17

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Ford Performance Parts 2024 Gen 4 5.0L 480 HP Coyote Long Block Crate Engines

Ford Performance Parts 2024 Gen 4 5.0L 480 hp Coyote engines are the latest all-aluminum crate engines from the 2024 Mustang GT. These modern 5.0L 32-valve DOHC V8s use advanced features, such as direct and port fuel injection, twin independent variable camshaft timing (Ti-VCT), high-flow cylinder heads, dual throttle bodies, and a heightened compression ratio to deliver 480 hp and 415 lb.-ft. of torque (with premium fuel). These lightweight plasma-transferred wire-arc spray aluminum cylinder blocks feature cross-bolted main bearing caps and thick main bearing bulkheads for bottom-end strength, and an optimized oil drain back and windage control to improve high-rpm performance. Available with production flexplate (automatic) or dual mass flywheel (manual) and both include engine harness. Engine specs: * 480 hp at 7,150 rpm * 415 lb.-ft. of torque at 4,900 rpm * 12.0:1 compression ratio * Bore 93mm x stroke 92.7mm * Hypereutectic aluminum pistons * Sintered steel connecting rods as used on BOSS 302 Mustang * Forged steel crankshaft * Aluminum block with plasma transferred wire arc spray weld liner coating * Longer, 12mm head bolts for higher clamp load * 9.5 qt capacity steel oil pan * Tuned composite intake manifold provides efficient air delivery and weight savings * Twin 80mm single bore drive-by-wire, electronic throttle bodies with variable runner control * High-flow aluminum cylinder heads, dual overhead camshaft (DOHC), four valves per cylinder, variable intake and exhaust camshaft timing * Engine mount bosses and bellhousing mount pattern common to 5.0L modular engines * Mustang GT 409 stainless steel tubular exhaust manifold on the RIGHT SIDE ONLY

5.0 out of 5 stars ( 1 )

$11,366.99

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$11,701.99

ATK High Performance Chrysler 5.7 Gen III Hemi 400 HP Long Block Crate Engines

ATK High Performance Chrysler 5.7 Gen III Hemi 400 hp long block crate engines were built in a team effort with Comp Cams. Utilizing ATK remanufactured GEN III 5.7L Hemi engines; they upgraded the camshaft, springs, and pushrods to produce reliable 400+ hp. Features typically include: * Seasoned OE Gen III Hemi block * OE reground crankshaft * OE reconditioned connecting rods * Hypereutectic pistons * Chromoly piston rings * Hydraulic roller camshaft * Aluminum cylinder heads * OE shaft mount rocker arms

3.6 out of 5 stars ( 5 )

$3,999.50

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$4,798.99

ATK High Performance Chrysler 360 Magnum 350 HP Complete Long Block Crate Engines

ATK High Performance Chrysler 360 Magnum 350 HP complete long block crate engines incorporate Engine Quests upgraded casting with the following benefits: * Thicker deck for greater strength * Improved design resists cracking * Superior port finish for increased flow * Water flow redesigned for greater thermal conductivity * Hardened exhaust seats * CNC-machined guides and seats Engine specifications: * HP: 350 * TQ: 430 * Block: OE Magnum roller block 1993-2001 * Bore/stroke: 4.040 in. x 3.580 in. * Displacement: 360 cu. in. * Crankshaft: OE cast * Rods: OE 6.123 in. * Pistons: Hypereutectic 9.3:1 compression * Rings: Chromoly * Camshaft: Hydraulic roller * Cam specs: 207/217 at 50 .496/.496 112 LSA * Timing chain: Double roller * Cylinder heads: New upgraded Engine Quest cast iron 62cc/172cc 1.78/1.50 * Rocker arms: Steel 1.6 pedestal rockers * Oil pan: 5 qt. OE front sump * Oil pump: Melling STD volume * Balancer: Externally balanced * Intake manifold: Edelbrock performer RPM air gap dual plane * Distributor: Pro billet RTR (Iron Gear) * Water pump: OE early pump * Carburetor: Quick Fuel 680 cfm vacuum secondary's electric choke * Fuel pump: Holley mechanical 110 gph * Spark plugs: Autolite * Spark plug wires: 8mm

Not Yet Reviewed

$6,898.99

ATK High Performance Chevy 377 Stroker Short Blocks

Looking to upgrade your old engine using your existing heads? ATK high performance Chevy 377 Stroker short blocks use a 100 percent new American-made cast iron block outfitted with a Scat crank kit. All the hard work is done, you just need to finish it off. These crate engines are available with forged H-beam or I-beam connecting rods; dish top or flat top pistons; forged 4340 steel or nodular iron crankshaft; and other options. Note: Performance short blocks are based on dyno-proven combinations built with name brand parts. Stroker engine built over size of stock stroke. Short block strapped and shipped on wooden pallet crate.

3.0 out of 5 stars ( 1 )

$3,298.99

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$4,499.99

Summit Bucks

Ford Performance Parts 572 C.I.D 655 HP Long Block Crate Engines

Big blocks are back! Ford Performance Parts 572 c.i.d. 655 hp long block crate engines are, once again, ready to make impressive power with excellent drivability—while utilizing premium, unleaded pump gas. They're available with front or rear sump pan. Specs for the Ford 572 c.i.d. long block crate engines: * 655 hp at 5,500 rpm * 710 lbs.-ft. torque at 4,500 rpm * Engine type: 385 Series big block * Bore x stroke: 4.500 in. bore x 4.500 in. stroke * Ford Performance A460 big block * Forged steel crankshaft * Forged steel H-beam connecting rods and bolts * Pistons with floating wrist pins * Hydraulic roller camshaft - Lift: .649 in. - Duration: Intake--259 degrees at .050 in. lift/exhaust--263 degrees at .050 in. lift * Ford Performance aluminum cylinder heads - Dual valve springs with damper - Stainless steel 2.20 in. diameter intake valves - Stainless steel 1.76 in. diameter exhaust valves * Compression ratio: 10.0:1 (nominal) * Required fuel: Premium unleaded * Stainless steel roller rockers * Multi-index timing chain set * Heavy-duty, aluminum body oil pump * SFI-approved vibration damper * Front or rear sump oil pan * Intake manifold * 870 cfm carburetor * Distributor * High performance water pump * Ford Performance Blue 9mm spark plug wires * Note: Built with current available parts

Not Yet Reviewed

$18,367.99

ATK High Performance Chevy 383 Stroker Short Blocks

Your engine needs a rock-solid foundation to make the horsepower you crave; that's where these ATK High Performance Chevy 383 Stroker short blocks come in. With these blocks, all of the hard work has been done for you. Everything comes machined, clearanced, balanced, and blueprinted, so you have a bulletproof bottom-end that is ready to run. Just decide how mild or wild you want to go. These ATK High Performance Chevy 383 Stroker short blocks include the following: * Handpicked and seasoned 4-bolt main block * Aligned and honed main bores * Forged 4340 steel * 3.75 in. stroke * I-beam connecting rods * Hypereutectic dish top pistons

3.33 out of 5 stars ( 3 )

$2,699.99

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$3,828.99

ATK High Performance Chrysler 360 Magnum 350 HP Base Long Block Crate Engines

ATK High Performance Chrysler 360 Magnum 350 HP base long block crate engines incorporate Engine Quests upgraded casting with the following benefits: * Thicker deck for greater strength * Improved design resists cracking * Superior port finish for increased flow * Water flow redesigned for greater thermal conductivity * Hardened exhaust seats * CNC-machined guides and seats Engine specifications: * HP: 350 * TQ: 430 * Block: OE Magnum roller block 1993-2001 * Bore/stroke: 4.040 in. x 3.580 in. * Displacement: 360 cu. in. * Crankshaft: OE cast * Rods: OE 6.123 in. * Pistons: Hypereutectic 9.3:1 compression * Rings: Chromoly * Camshaft: Hydraulic roller * Cam specs: 207/217 at 50 .496/.496 112 LSA * Timing chain: Double roller * Cylinder heads: New upgraded Engine Quest cast iron 62cc/172cc 1.78/1.50 * Rocker arms: Steel 1.6 pedestal rockers * Oil pan: 5 qt. OE front sump * Oil pump: Melling STD volume (does not come with an oil pump driveshaft)

Not Yet Reviewed

$4,098.99

ATK High Performance Chevy LQ4 6.0L 505 HP Long Block Crate Engines

ATK High Performance Chevy LQ4 6.0L 505 hp long block crate engines are designed to be a performance upgrade for LS-based vehicles or perfect for a 2001-07 Chevy Truck LQ4 or LS swap in a hot rod. Expect big mid- to upper-end power, with a noticeable idle. (For optimal performance, you'll need headers, chassis dyno tune, and 36 lb. injectors. Engine specifications: * Horsepower: 505 * Torque: 480 * Block: OE LQ4/6.0L Iron * Bore/Stroke: Up to 4.040 in. x 3.622 in. * Displacement (cu.in.): Up to 371 * Crankshaft: OE GM 24-tooth reluctor wheel * Rods: OE powder metal or stock GM * Pistons: Hypereutectic 10:1 compression * Rings: Moly * Camshaft: Hydraulic roller * Cam specs: Custom performance grind * Timing chain: OE single roller * Cylinder heads: OE cathedral port aluminum 71cc/210cc 2.00/1.55 * Rocker arms: 1.7 ratio * Oil pump: Melling STD volume * Engine info: -- Oil: Conventional / Non-Synthetic 10W30 -- Oil Filter: Wix or K&N -- Timing: Set to factory specifications via PCM module -- Spark Plug Gap: .040 in. -- Firing Order: 18726543 -- Octane: 91+ -- Stall Converter: 1800+ -- Exhaust: 1 5/8 + Headers (Per application – Larger diameter will make more power) * NOTES: This engine replaces the 2001-07 Chevy 6.0L LQ4 engine. ECM MUST BE TUNED; not doing so can damage the engine. A PCV valve must be run. You must also run an air-oil separator system such as the Moroso 85487 to capture the excess crankcase vapors LS engines are known for. If you are not running a MAP sensor, the MAP timing option in the timing control box must be zeroed out all the way across. Failure to do so will allow the controller to add timing which can lead to detonation. You must also run some sort of a steam line kit that dumps to your water pump, radiator or radiator hose; ATK recommends a 4-corner setup like the Trick Flow TFS-306SB601. This allows air pockets/hot spots to escape the heads and can also be used to purge out trapped air when filling the radiator for the first time.

3.0 out of 5 stars ( 2 )

$5,198.99

ATK High Performance GM 408 LQ4 Stroker 600 HP Stage 1 Long Block Crate Engines

ATK High Performance GM 408 LQ4 Stroker 600 hp Stage 1 long block crate engines offer streetable horsepower producing big mid- to upper-end power with a noticeable idle. ATK Stage 1 or base engines are designed for those that may have their own component parts already, and who also are interested in completing out the build themselves. Typically ATK GM 408 LQ4 Stroker 600 hp base engines consist of: * 6.0L iron LQ4 Gen III block * 4340 forged crankshaft * Forged H-beam connecting rods * Forged pistons * Chromoly piston rings * Hydraulic roller camshaft * Performance aluminum cylinder heads * OE rocker arms with trunnion upgrade * Timing set

Not Yet Reviewed

$8,997.99

ATK High Performance GM 350 330 HP Stage 2 Long Block Crate Engines

Give your ride new life with these ATK High Performance GM 350 330 hp/380 lbs.-ft. Stage 2 long block crate engines. These engines are based on the tried-and-true small block Chevy and are built to perform right out of the box. ATK hand-assembles and balances each engine using top-quality parts to help them produce awesome power. Whether you are replacing an older, tired engine or just looking for a little more performance, ATK has you covered. ATK GM 350 330 hp Stage 2 crate engines include the following: * Handpicked, OE remanufactured blocks * ATK cast iron cylinder heads * 76cc combustion chambers * 165cc intake runners * 1.94 in./1.5 in. valves * Stamped steel 1.5 ratio rocker arms * ATK dual plane intake manifold * OE crankshaft * PowerBond 8 in. balancer * OE 5.7 in. powder metal connecting rods * Hypereutectic flat top pistons * Hydraulic flat tappet camshaft * .465 int./.488 exh. cam lift * 224 int./234 exh. cam duration at 0.50 * 9.1:1 compression * Distributor * Valve covers * Timing cover and double roller timing set * Oil pan, pump, and pickup tube * OE style long water pump * 168 tooth flexplate

3.4 out of 5 stars ( 10 )

$3,750.99