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Old 09-16-2015, 06:58 AM   #1
GretchenGotGrowl


 
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Drives: 11 F150 EB/13 Sonic RS/15 Z06
Join Date: Sep 2010
Location: Little Rock, AR
Posts: 7,129
Early LGX Information

I thought I would kick off the LGX section now that we've seen the performance numbers. Hopefully we'll start seeing some bolt-ons real soon.

  • The 3.6 liter V6 LGX engine is GM’s new high-feature V6 engine. It is a clean-sheet design and shares little with the 3.6L six-cylinder LFX engine it replaces.
  • The LGX sets benchmarks for efficiency, refinement and durability compared to the LFX it replaces. LGX highlights include:
  • Aluminum deep-skirt cylinder block from the LFX mill
  • An enlarged bore of 95 mm (compared to 94mm on the LFX)
  • Enlarged bore centers of 103mm (compared to 106mm on the LFX)
  • An all-new cylinder head design
  • A forged steel crankshaft
  • High-strength connecting rods and pistons
  • Oil-spray piston cooling
  • Active Fuel Management (cylinder deactivation) and Auto Stop-Start system generate fuel savings of 9 percent compared to the 3.6L V6 LFX
  • Improved Variable Valve Timing (VVT) with an ‘intermediate park’ feature
  • Reshaped piston tops to promote a better mix of the air and fuel during the direct injection process
  • Relocated oil pump under the cylinder block and inside the oil pan
  • Acoustic engine cover
  • Stronger, stiffer aluminum block with increased structure in the bulkheads for superior rigidity
  • Tough, refined rotating assembly with a stiff forged-steel crankshaft, friction-reducing polymer-coated pistons and strong high-copper-content, sinter-forged connecting rods
  • New four-cam phasing system with intermediate park technology that enhances efficiency by enabling late inlet valve closing in certain conditions
  • All-new, patented “targeted” cooling system that provides strategic cooling of the engine’s hottest areas while simultaneously fostering faster warm-up to enhance efficiency
  • New, higher-flow cylinder heads that enhance direct injection performance and feature integrated exhaust manifolds
  • Revised, simplified timing drive system with cushioned chain sprockets contributing to quieter engine operation
  • All-new lubrication system with a variable-displacement, two-stage oil pump that enhances efficiency. It is located inside the oil pan, which contributes to greater noise abatement
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