Horsepower: 650 HP

Torque: 650 LB-FT

Supercharged Power from the C7 Corvette Z06

At the time of its release, the supercharged LT4 6.2 SC was the most powerful engine ever offered in a regular production Chevrolet, and was the heart of the Camaro ZL1. It features a compact, efficient 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 thegreater cylinder pressures created by forced induction. They include RotocastA356T6 aluminum cylinder heads, which are stronger and handle heat better than conventional castings, lightweight titanium intake valves and stronger forged aluminum pistons.

INSTALLATION NOTES

• Assembly does not include any electronics
• Select the right controller kit for your LT4 engine (see chart on page 115)
• Front-End Accessory Drive system must be ordered separately (see page 106)
• Can accommodate P/N 19420210 Hydraulic Power Steering Kit (not included with Accessory Drive System)
• Includes 8-bolt flexplate
• Not intended for marine applications
• Crankshaft has 8-bolt flywheel mounting pattern
• Engine includes direct injection and VVT
• Chevrolet Performance control kits do not use the Active Fuel Management components on this crate engine

TECH SPECS

• Part Number: 19431955
• Engine Type: Gen V Small-Block V-8
• Displacement (cu in): 376 (6.2L)
• Bore x Stroke (in): 4.065 x 3.622 (103.25 x 92mm)
• Block (P/N 12718007): Cast aluminum with 6-bolt, cross-bolted main caps
• Crankshaft (P/N 12712984): Forged steel
• Connecting Rods (P/N 12719127): Forged powdered-metal steel
• Pistons (P/N 12733421-L, 12733420-R): Forged aluminum
• Camshaft Type (P/N 12642245): Hydraulic roller
• Valve Lift (in): .502 intake / .561 exhaust
• Camshaft Duration (@.050 in): 188° intake / 223° exhaust
• Cylinder Heads (P/N 12699619): 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