19431955 Chevrolet Performance Engine Asm Wet Sump Replaces 19417413 and 19368622, 19418844
As heart of the Camaro ZL1, 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 630 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, lightweighttitanium intake valves and stronger forged aluminum pistons.TECH SPECSPart Number:19417413 (wet sump)Engine Type: Gen V Small-Block V-8Displacement (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 capsCrankshaft: Forged steelConnecting Rods: Forged powdered-metal steelPistons: Forged aluminumCamshaft Type: Hydraulic rollerValve Lift (in): 0.492 intake / 0.551 exhaustCamshaft Duration (@0.050 in): 189° intake / 223° exhaustCylinder Heads: A356T6 Rotocast aluminum; as cast with 65.5cc chambersValve Size (in): 2.130 intake / 1.590 exhaustCompression ratio: 10:1Rocker Arms (P/N 12619829): Investment cast, roller bearing trunnionRocker Arm Ratio: 1.81:1Recommended Fuel: Premium pumpMaximum Recommended RPM: 6,600Reluctor Wheel: 58xBalanced: InternalINSTALLATION NOTES• Assembly does not include electronics – use the correct LT4 controller kit for engine/transmission combination.• Includes engine oil cooler• Flesplate included (The engine comes with 12669050 or 12685003 which is OE for the new Camaro and has 6 holes for coupling,)
- Use 19435470 Attachment kit for 6L80 transmissions, see notes on the 19435470 kit for component parts.
• 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
• Chevrolet Performance control kits do not use the Active Fuel Management components on this engine.
UPC:195491160880