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Summit Racing™ Chevy LS 5.3L 450HP Long Block Crate Engines

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 Hyd Roller #8713 * Camshaft specifications: Lift- 545/545, 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

4.38 out of 5 stars ( 52 )

$3,949.99

BluePrint Engines Chevy 350 C.I.D. Short Block Engines

BluePrint Engines Chevy 350 c.i.d. short block engines are a GM small block compatible 350 c.i.d. platform engineered for torque-focused street and strips builds. Designed as a durable, performance-ready foundation, they are ideal for aggressive naturally aspirated combinations and are well-suited for muscle car restorations, restomod, and bracket racing applications. Built to the same exacting standards as BluePrint's dyno-tested crate engines, they deliver the strength, precision machining, and proven durability builders expect when starting their small block project. Key features and specifications: * High-Strength Cast Iron Block—manufactured and machined in the USA! * Compression Ratio: 9.2:1 (depending on cylinder head chamber size) * Drilled and tapped for clutch linkage * Mech fuel pump provision: Yes * Passenger side dipstick * One-piece rear main seal * Splayed 4-bolt main * 4.000 in. bore Rotating Assembly: * BluePrint cast crankshaft * 3.480 in. stroke * 5.700 in. connecting rods with 150,000 psi bolts * Hypereutectic 12cc dish pistons * Internally balanced front/Externally balanced rear

Not Yet Reviewed

$3,799.00

BluePrint Engines Ford Small Block 302 C.I.D. Short Block Engines

BluePrint Engines Ford Small Block 302 c.i.d. short block engines are a high-strength, cast-iron replacement engine foundation designed to hold up to 700 horsepower. They feature 4-bolt mains, a 3.00-inch stroke cast crank, and 5.090-inch rods, delivering a 9.4:1 compression ratio with 60cc heads, optimized for both performance and reliability. Keep in mind, performance may vary depending upon what cylinder heads, fuel system and intake manifold you choose. This is a fully customizable engine. Key features and specifications: * High-Strength Cast Iron Block—manufactured and machined in the USA! * Increased deck thickness and strength webbing * Compression Ratio: 9.4:1 with 60cc heads * Priority main oiling * 4.000 in. bore * Splayed 4-bolt main * One-piece rear main seal * Improved water jacket design Rotating Assembly: * Cast steel crankshaft * 3.000 in. stroke * OEM-type 5.090-inch connecting rods * Hypereutectic pistons * 50 oz. Externally balanced front and rear * Fuel recommendation: 87+ Octane

Not Yet Reviewed

$4,699.00

Chevrolet Performance 4.3L 262 C.I.D. Remanufactured Long Block Crate Engines

Restore your vehicle's power by installing a Chevrolet Performance 4.3L 262 c.i.d. remanufactured long block crate engine. Assembly features include: * Cast iron block * Cast, internally balanced crankshaft * Cast connecting rods * Shot-peened and magnafluxed * Pistons * Hydraulic roller or flat tappet camshaft and lifters * Cast iron cylinder heads

5.0 out of 5 stars ( 1 )

$4,496.99

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$4,999.99

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