GM LT4 DRYSUMP ENGINE

As heart of the Corvette Z06, the supercharged LT4 6.2L SC is the most powerful engine ever offered in a regular production Chevrolet. It features a more-efficient, more-compact 1.7L Eaton R1740 TVS supercharger, which spins at up to 20,000 rpm. That’s enough to generate more than 9 pounds of boost and help produce 650 horsepower and 650 lb.-ft. of torque. The LT4 is based on the same Gen V Small-Block architecture as the LT1 engine, with several unique features designed to support its higher output and the greater cylinder pressures created by forced induction. They include Rotocast A356T6 aluminum cylinder heads that are stronger and handle heat better than conventional castings, lightweight titanium intake valves and stronger forged aluminum pistons. TECH SPECS Part Number: 19417413 (wet sump) 19416595 (dry sump) Engine Type: Gen V Small-Block V-8 Displacement (cu in): 376 cu in (6.2L) Bore x Stroke (in): 4.065 x 3.622 (103.25 x 92mm) Block: Cast aluminum with 6-bolt, cross-bolted main caps Crankshaft: Forged steel Connecting Rods: Forged powdered-metal steel Pistons: Forged aluminum Camshaft Type: Hydraulic roller Valve Lift (in): 0.492 intake / 0.551 exhaust Camshaft Duration (@0.050 in): 189° intake / 223° exhaust Cylinder Heads: A356T6 Rotocast aluminum; as cast with 65.5cc chambers Valve Size (in): 2.130 intake / 1.590 exhaust Compression ratio: 10:1 Rocker Arms (P/N 12619829): Investment cast, roller bearing trunnion Rocker Arm Ratio: 1.81:1 Recommended Fuel: Premium pump Maximum Recommended RPM: 6,600 Reluctor Wheel: 58x Balanced: Internal INSTALLATION NOTES • Assembly does not include electronics – use P/N 19331517 LT4 controller kit to operate engine • Includes engine oil cooler • Intended for pre-1976 street vehicles or any off-road vehicles • Not intended for marine applications • Crankshaft has 8-bolt flywheel mounting pattern (Same as LT1 and LSA) • Engine includes direct injection, VVT and Active Fuel Management