New from Ohio Speed Shops – the LS3 6.2L 540HP EFI Crate Engine. This new LS3 engine features a wide variety of options with many performance upgrades. See more details below.

Official Release:

Our New LS3 makes 540+HP with lots of performance upgrades and a bunch of options.

Features:

• FREE 48 State Truck Freight Shipping
• Initial engine break-in on dyno prior to test and tuning
• Engine Dyno Tested and Tuned
• Limited 2-1/2 year / 50,000 mile parts & labor warranty for street registered/licensed vehicles
• Your choice of oil pan: Holley 302-1, Holley 302-2, Holley 302-3, GM F/body, Corvette C6, Chevy Performance Musclecar Pan or Mast Motorsports 401-111 swap oil pan
• LS3 water pump & balancer (can be used with Chevrolet Performance accessory drives)
• Pre-Installed engine harness, ecu & controller (for integrated auto trans controller add $250.00)
• Complete Self Learning Fuel Injection System with cable drive throttle body
• New GM light weight aluminum LS3 block (available in black, Chevy orange, natural aluminum or call for custom paint colors)

Specifications:

• Power: 540 HP @ 5800 RPM, 510 ft. lbs. of torque @ 5100 RPM
• Displacement: 376 CID, 6.2L
• Bore x Stroke: 4.065” x 3.622”
• Compression Ratio: 10.7:1
• Recommended Fuel: 91 Octane
• Block: New GM LS3 Cast Aluminum with 6 bolt cross bolted main caps
• Crankshaft: Nodular Iron
• Connecting Rods: Powdered Metal Steel with upgraded 150,000 psi bolts
• Pistons: Hypereutectic Aluminum
• Camshaft: Steel Hydraulic Roller Tappet
• Cam Lift: .612” Intake / .585” exhaust
• Cam Duration @ .050”: 225 deg. Intake / 238 deg. Exhaust
• Lobe Separation: 113 110 ICL
• Cylinder Heads: Upgraded Aluminum L92/LS3 style ports
• Combustion Chamber: 72cc
• Valves: 2.165” Intake/ 1.600” Exhaust
• Springs: Dual .650” max lift
• Rocker Arms: Cast with Upgraded Roller Trunnion, 1.7:1 Ratio
• Balance: Internal
• Reluctor: 58X
• Maximum GM Recommended RPM: 6600
• GM Recommended Torque Converter Stall 2400-2800