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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
( 41 )
$3,849.99
Give your car or truck a little more punch with one of these ATK High Performance GM 350 Vortec 350 hp Stage 2 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 they are great-running, reliable engines that will get you back on the road. Engine specifications: * HP: 350 * TQ: 400 * Block: OE roller block 4-bolt main 1-pc seal 1996-2000 * Bore/Stroke: 4.040 in. x 3.480 in. * Displacement: 350CI * Crankshaft: OE reground external balance rear of crank/internal balance front of the crank * Rods: OE powder metal 5.7 in. * 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: Vortec cast iron 67cc 1.94/1.50 *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 * Intake Manifold: ATK HP dual plane * Distributor: HEI (Iron Gear) * Water Pump: OE long pump Recommended components: * 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
( 8 )
$3,688.99
Awesome performance and awesome looks combine with these ATK High Performance GM 350 390 hp Stage 1 long block crate engines. They are topped with trick looking parts and they 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 1 long block crate engines include: * Handpicked, remanufactured block * ATK High Performance aluminum cylinder heads with 2.020 in. /1.600 ex. valves * OE crankshaft and connecting rods * Hypereutectic pistons * Hydraulic roller camshaft * Valve covers * Timing cover and timing set * Oil pan, pump, and pickup tube
( 15 )
$3,798.99
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
( 7 )
$2,988.99
Give your car or truck a little more punch with ATK High Performance GM 350 Vortec 350 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. ATK GM 350 Vortec 350 hp Stage 1 long block crate 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
( 6 )
$3,334.99
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
( 1 )
$4,298.99
On Sale
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.
( 69 )
$4,785.99
$2,020.99
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$5,268.99
These Summit Racing™ 350 small block Chevys are 100% new, including their blocks! No remanufactured parts are used to build these engines. They are built with new Vortec head castings that are not prone to cracking like the factory ones, and produce a reliable 300+ horsepower/375+ lbs.-ft. torque, providing a mild muscle car tone. These engines are assembled for us by the guys at ATK, and backed with their 2-year unlimited mile warranty for peace of mind.
Not Yet Reviewed
$4,499.99
Give your car or truck a little more punch with ATK High Performance GM 350 Vortec 350 hp Stage 3 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. Engine Specifications: * HP: 350 * TQ: 400 * Block: OE roller block 4-bolt main 1-pc seal 1996-2000 * Bore/Stroke: 4.040 in. x 3.480 in. * Displacement: 350CI * Crankshaft: OE reground external balance rear of crank/internal balance front of the crank * Rods: OE powder metal 5.7 in. * 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: Vortec cast iron 67cc 1.94/1.50 * 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 * 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
( 1 )
$4,624.99
Pack stroker power and torque in your ride with ATK High Performance GM 383 stroker 380 hp Stage 1 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. ATK GM 383 Stroker 380 hp Stage 1 long block crate engines include: * Handpicked, remanufactured blocks * Dart Iron Vortec style cylinder heads * Nodular iron crankshaft and 4340 I-beam connecting rods * Hypereutectic pistons * Hydraulic roller camshaft * Cam lift- .495 int./.502 exh. * Cam duration at 0.50- 220 int./224 exh. * 9.5:1 compression * Valve covers * Timing cover and timing set * Oil pan, pump, and pickup tube
Not Yet Reviewed
$4,498.99
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