Ohio Speed Shops Releases 6.2L LS3 540HP EFI Crate Engine

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

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About the author

Chris McWilliams

Chris McWilliams grew up watching his dad race go-karts around his Southern Indiana home and started racing junior dragsters when he was 10 years old. Chris drove a UMP Mini Stock for two seasons until he totaled his racecar in an accident at Western Kentucky Speedway. He is currently a college student at Oakland City University working on a degree to pay the bills for his dirt racing addiction.
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