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L92

L92 Vortec 6.2L V8 "GEN IV"

Vehicle Applications

  • 2008 Chevrolet Tahoe LTZ
  • 2007–2008 GMC Sierra 1500 Denali
  • 2007–2008 GMC Yukon Denali, Yukon XL Denali
  • 2007–2008 Cadillac Escalade, Escalade ESV, Escalade EXT

Product Highlights

  • Gen IV Aluminum Cylinder Block
  • Rectangular Port Aluminum Cylinder Heads
  • Variable Valve TIming (VVT) 
  • Advanced Electronic Throttle Control
  • 58X Ignition System

L92 Engine Specs (VIN "8")

The information listed here is for a stock engine.

Performance Specifications

Compression Ratio 10.5 : 1
Horsepower Rating 403 hp.
Torque Rating 417 ft./lbs.

 

Application Information

VIN 8th Digit

Year

Make

Model

8

2008

Chevrolet

Tahoe LTZ

2007-08

GMC

Sierra 1500 Denali

Yukon Denali, Yukon XL Denali

Cadillac

Escalade, Escalade ESV, Escalade EXT

 

Engine Block Specifications

Casting Number

12584724, 12584727

Material

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

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.

 

Rotating Assembly Specifications

Piston Material

Hypereutectic Cast Aluminum Alloy

Piston Style

Flat Top with valve reliefs

Piston Volume

+3cc

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

12649190

Crankshaft Material

Cast Iron

Crankshaft Part Number

12584997

Crankshaft Main Journal Dia.

2.559 in.

Crankshaft Rod Journal Dia.

2.100 in.

Reluctor Wheel

58X

 

Cylinder Head Specifications

Casting Numbers

2716, 5364, 823

Material

Aluminum

Combustion Chamber Volume

70cc

Intake Port Shape

Rectangle

Intake Runner Volume

257cc

Exhaust Port Shape

D-Port

Exhaust Runner Volume

87cc

Intake Valve Dia.

2.165 in.

Exhaust Valve Dia.

1.590 in.

Cylinder Head Bolt Style

Torque to Yield (TTY)

Cylinder Head Bolt Size

(10) M11 x 2 x 100, (5) M8 x 1.25 x 45

 

Camshaft Specifications

Cam P/N

12612273

Duration @ .050 in. (int./exh.)

198°/209°

Valve Lift (int./exh.)

0.500 in./.500 in.

Lobe Separation

115°

Cam Gear Attachment

1-Bolt

Cam Gear Poles

4X

Active Fuel Management (AFM)

No ("1st design" engines built prior to April 1, 2006 had AFM components but were not connected. "2nd Design" didn't have AFM components at all)

Variable Valve Timing (VVT)

Yes

 

Valvetrain Specifications

Lifter Style

Hydraulic Roller

Lifter Link Style

Plastic Lifter Tray

Lifter Body Diameter

0.842 in.

Pushrod Length

7.385 in.

Rocker Arm Mounting Style

Pedestal

Rocker Arm Style

Die-Cast, Roller Fulcrum

Rocker Ratio

1.7

Rocker Offset

Intake Rocker

Valve Spring Style

Beehive

Valve Spring Color

Natural

Valve Angle

15 degrees

Intake Valve Material

Steel, Solid Stem

Intake Valve Dia.

2.165 in.

Exhaust Valve Material

Steel, Solid Stem

Exhaust Valve Dia.

1.590 in.

 

Other Specifications

Intake Manifold

Truck-Style

Throttle Body

87mm, 4-bolt

Throttle Control

Electronic (Drive-by-Wire)

Fuel Injector P/N

12580681

Fuel Injector Flow

30 lb/hr @ 58 psi

Flex Fuel Capable

No

Fuel Injector Length (between O-rings)

1.900 in.

Fuel Injector Connector

EV6 / USCAR

PCM

E38

Crankshaft Reluctor Ring

58X

Camshaft Sensor

Front mount, 4X on cam

Oil Pan

Deep Rear Sump

Oil Pump

High Volume (1.25 c.i. per rev.) @ 33 psi