Chevy 5.7 L LS1 LS6

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Chevy 5.7 L LS1 LS6 Chevy 5.7 L LS1 LS6 All Aluminum Fuel Injected 425HP 400FT/LBS TQ Block Bored and honed with torque plate 5.7 LS1 Aluminum Block Premium core max .020 bore.    Cylinder Heads LS1 Heads  66cc Chambers 2.00/1.55 Performance valves GM Performance Springs and retainers 3 angle competition valve job New head bolts   Valve Train 219/228 525/525 112 GM Hydraulic roller cam  Hydraulic Roller Lifters Roller Timing Set Roller Rockers 1.7 ratio Manley 4340 Push Rods .080 wall   Rotating Assembly Hypereutectic coated Pistons 10.4:1 CR OE rods w/ARP rod bolts OE 10/10 crank Internally Balanced Speed Pro File Fit Moly Rings Melling Oil Pump   Tinware Professional Products Aluminum FI Performance Intake w/ Fuel Rails Professional Products Balancer  Aluminum Timing Cover timing cover Valley Cover F body aluminum oil pan   Note: This engine requires your injectors, sensors, and an adjustable pressure regulator. Dyno testing at an additional fee No Core Return Required Crate Engine Cost: $5,499

Promar Reserves the right to change manufacturers and specs without notice. HP and TQ ratings are based on actual results on a engine dyno with open headers in controlled environment tuned for maximum performance.