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These ATK High Performance Chevy LS 408 short blocks are made to handle some serious power. The foundation of any high performance engine is a rock-solid short block, so ATK designed and developed these to be just that. They feature a fully forged, balanced, and blueprinted rotating assembly that is available in a variety of configurations to fit naturally aspirated, nitrous, and forced induction builds, as well as those with 24 and 58-tooth cranks. These ATK High Performance Chevy LS 408 short blocks include the following: * GM LS Iron blocks * Aligned and hone main bores * Manley 4340 forged crankshaft * 4.00 in. stroke * Manley 4340 H-beam connecting rods * Manley forged pistons
( 4 )
$5,143.99
BluePrint Engines GM 383 c.i.d. 445 hp dressed power-adder stroker long block crate engines make strong foundations for nitrous, turbos, and blowers. Block features: * Cast iron * 4-bolt main * One-piece rear main seal * Passenger side dipstick * Mechanical fuel pump provision * Drilled and tapped for clutch linkage Rotating assembly: * Forged crankshaft * Forged I-beam connecting rods * Forged pistons Also includes: * Aluminum cylinder heads -- 64cc chamber -- 2.02 in. intake/1.60 in. exhaust valves -- 195cc intake/75cc exhaust runners * Hydraulic roller cam -- .536 intake/.555 exhaust -- 224 intake/236 exhaust duration at .050 -- 113 degree lobe separation * Oil pan * Valve covers * Timing cover * Harmonic balancer * 30-month/50,000-mile Warranty * Dyno-tested and shipped with results
( 1 )
$8,049.00
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 Chevy Gen V LT1 416 short blocks are built for naturally aspirated engines, boost or nitrous. ATK starts with a new GM LT block and outfits it with a Manley 4340 forged crankshaft, H-beam rods with ARP2000 bolts, Manley 2618 forged pistons, and Total Seal CS AP ring package with steel top rings. These short blocks will have the factory piston squirters plugged. Engine Specifications: * Block: New GM LT1/LT4 * Bore/Stroke: 4.065 in. x 4.000 in. * Displacement (cu.in): 416 c.i.d. * Crankshaft: Manley 4340 forged 58-tooth reluctor wheel * Rods: Manley 4340 forged H-beam 6.125 in. ARP 2000 bolts * Pistons: Choice of 2618 forged +10cc or +20cc dished * Rings: Total Seal CS AP steel top ring with Napier 2nd ring set * Camshaft bearings: Installed and clocked to OEM position * Freeze plugs: Installed and sealed * Oil galley plugs: Installed and sealed Recommended components: * Balancer -- Internal balance * Flex plate / Flywheel -- Internal balance * Head gasket: .051 in. or per application * Oil pump: Factory Engine Info: * Oil: 5W30 non-synthetic for first 3,000 miles * Oil filter: Wix or K&N, per application
Not Yet Reviewed
$6,998.99
ATK High Performance Chevy Gen V LT1 376 short blocks are built for naturally aspirated engines, boost or nitrous. ATK starts with a new GM LT block and outfits it with a Manley 4340 forged crankshaft, H-beam rods with ARP2000 bolts, Manley 2618 forged pistons and Total Seal CS AP ring package with steel top rings. These short blocks will have the factory piston squirters installed. Engine Specifications: * Block: New GM LT1/LT4 * Bore/Stroke: 4.065 in. x 3.622 in. * Displacement (cu.in): 376 c.i.d. * Crankshaft: Manley 4340 forged 58-tooth reluctor wheel * Rods: Manley 4340 forged H-beam 6.125 in. ARP 2000 bolts * Pistons: Choice of 2618 forged +12cc dished or -2cc domed * Rings: Total Seal CS AP steel top ring with Napier 2nd ring set * Camshaft bearings: Installed and clocked to OEM position * Freeze plugs: Installed and sealed * Oil galley plugs: Installed and sealed Recommended Components: * Balancer -- Internal balance * Flex plate / Flywheel -- Internal balance * Head gasket: .051 in. or per application * Oil pump: Factory Engine Info: * Oil: 5W30 non-synthetic for first 3,000 miles * Oil filter: Wix or K&N, per application
Not Yet Reviewed
$6,998.99
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