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L86

L86 6.2L V8 "GEN V"

Vehicle Applications

  • 2015+ Cadillac Escalade
  • 2014+ Chevrolet Silverado
  • 2014+ GMC Sierra
  • 2015+ GMC Yukon / XL

Product Highlights

  • Gen V Aluminum Cylinder BlocK
  • Direct Fuel Injection
  • Variable Valve TIming (VVT)
  • Active Fuel Management (AFM)
  • E85 Flex-Fuel Capability
  • Advanced Electronic Throttle Control
  • 58X Ignition Systems

L86 Engine Specs (VIN "J")

The information listed here is for a stock engine.


Performance Specifications
Compression Ratio 11.5:1
Horsepower Rating 420 hp @ 5,600 rpm
Torque Rating 460 ft.-lbs. @ 4,100 rpm

Application Information
VIN 8th Digit Year Make Model
J 2015-present Cadillac Escalade
2014-present Chevrolet Silverado
2014-present GMC Sierra
2015-present Yukon / XL

Engine Block Specifications
Part Number 12619171
Material 319-T7 Aluminum
Displacement 6.2L / 376 c.i.d.
Bore Dia. 4.065 in.
Stroke 3.622 in.
Deck Height 9.240 in.
Bore Spacing 4.400 in.
Thrust Bearing Location #3 Main, 1/2 thrust
Main Cap Style 6-bolt
Main Housing Bore Dia. 2.751 in.
Cam Housing Bore Dia. Bore 1/5 = 2.346 in. Bore 2/4 = 2.326 in. Bore 3 = 2.307 in.
Cam-to-Crank Centerline 4.914 in.
Oil Squirters 8

Rotating Assembly Specifications
Piston Material Hypereutectic Cast Aluminum Alloy
Piston Style Domed (with reliefs for the exhaust valve and direct injector)
Piston Volume 0.6cc (net)
Wrist Pin Dia. 0.9431 in. (full floating)
Connecting Rod Material Powdered Metal
Connecting Rod Style I-beam
Connecting Rod Length 6.098 in.
Connecting Rod Housing Bore 2.225 in.
Connecting Rod Bolts M9 x 1 x 43
Connecting Rod Part Number 12654242
Crankshaft Material 1538MV Forged Steel
Crankshaft Part Number (Wet Sump) 12623492
Crankshaft Main Journal Dia. 2.559 in.
Crankshaft Rod Journal Dia. 2.100 in.
Reluctor Wheel 58X
Harmonic Balancer Iron

Cylinder Head Specifications
Part Numbers 12678633, 12620544, 12620545
Casting Numbers 12620549
Material 319-T7 Aluminum
Combustion Chamber Volume 59.02cc
Intake Port Shape Rectangle
Intake Runner Volume 297cc
Intake Manifold Bolt Pattern LT1 Specific
Exhaust Port Shape Flat Oval
Exhaust Runner Volume 107cc
Cylinder Head Bolt Style Torque to Yield (TTY)
Cylinder Head Bolt Size (10) M12 x 1.75, M8 corner bolts

Camshaft Specifications
Part Number 12629512
Duration @ .050 in. (int./exh.) 200°/207°
Valve Lift (int./exh.) 0.551 in./0.524 in.
Lobe Separation 116.5°
Cam Gear Attachment 1-bolt
Cam Gear Poles 4X
Active Fuel Management (AFM) Yes
Variable Valve Timing (VVT) Yes

Valvetrain Specifications
Lifter Style Hydraulic Roller
Lifter Link Style Plastic Lifter Tray
Lifter Body Dia. 0.842 in.
Pushrod Dimensions 7.85 in. (long) x 0.342 (dia.)
Rocker Arm Mounting Style Pedestal
Rocker Arm Style Die-Cast, Roller Fulcrum
Rocker Ratio 1.8
Rocker Offset None
Valve Spring Style Beehive
Valve Spring Color Natural
Intake Valve Angle 12.5° / Splayed 2.61°
Exhaust Valve Angle 12.0° / Splayed 2.38°
Intake Valve Material Steel, Hollow Stem
Intake Valve Dia. 2.126 in.
Exhaust Valve Material Steel, Sodium Filled
Exhaust Valve Dia. 1.590 in.
Timing Chain Guide Style Spring Loaded Tensioner

Other Specifications
Intake Manifold Truck style
Throttle Body 87mm, 4-bolt
Throttle Control Electronic (Drive-by-Wire)
Fuel Injector P/N 12656931
Fuel Injector Flow 123 lbs./hr. (2,205 max psi)
Flex Fuel Capable (E-85) Yes
Computer E92
Crankshaft Reluctor Ring 58X
Camshaft Sensor Location Timing Cover
Oil Pan Capacity 8 qt.
Oil Pump (Wet Sump) Variable Displacement