Engine Guides / LS Engines

L92 6.2L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More

The L92 is a 6.2L, Gen. 4, small block engine used in GM luxury trucks and SUVs between 2007 and 2008. For marketing purposes, it was also known as the Vortec 6200. The information listed here is for a stock L92 engine.

Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick—heck, even Saab, Hummer, and Isuzu got some LS love.

Since LS and Vortec engines are so common, they’ve become the go-to performance and swap engines of the modern era.

These motors are capable of making a lot of horsepower, and respond well to upgrades like turbos, superchargers, high-flow cylinder heads, intake systems, cams, and nitrous oxide.

[NOTE: Looking to upgrade your L92? Read: L92 6.2L Engine Upgrade Guide: Expert Advice for L92 Mods to Maximize Performance.]

The aftermarket is strong, crate engines are available, and used motors are often cheaply sourced through junkyards.

Summit Racing has created a series of comprehensive guides for each engine in the LS family, so engine builders and tuners can have a handy reference for their projects.

This specific guide is for the GM L92 6.2L Vortec 6200.

You can find more LS engine spec guides and LS-related information here.

(Summit Racing’s Paul Spurlock and Brian Nutter contributed to this article.)

L92 6.2L Vortec 6200 Engine Specs

L92 Performance Specifications

Engine Ratings
Compression Ratio10.5:1
Horsepower Rating403 hp
Torque Rating417 ft./lbs.

L92 Applications

VIN 8th DigitYearMakeModel
82007-08GMCSierra 1500 Denali
82007-08GMCYukon Denali, Yukon XL 1500 Denali
82007-08CadillacEscalade, Escalade ESV, Escalade EXT
82008ChevyTahoe LTZ

L92 Engine Blocks

L92 Block Specs
Casting Number12584724, 12584727
Displacement6.2L / 376 c.i.d.
Bore Dia. 4.065 in.
Stroke3.622 in.
Deck Height9.240 in.
Bore Spacing4.400 in.
Thrust Bearing Location#3 Main
Main Cap Style6-Bolt
Main Housing Bore Dia.2.751 in.
Cam Housing Bore Dia.Bore 1/5 = 2.346, Bore 2/4 = 2.326, Bore 3 = 2.307
Cam-to-Crank Centerline4.914 in.

L92 Rotating Assembly

L92 Rotating Assembly Specs
Piston MaterialHypereutectic Cast Aluminum Alloy
Piston StyleFlat Top with Valve Reliefs
Piston Volume+3cc
Wrist Pin Dia.0.9431 in. (full floating)
Connecting Rod MaterialPowdered Metal
Connecting Rod StyleI-Beam
Connecting Rod Length6.098 in.
Connecting Rod Housing Bore2.225 in.
Connecting Rod BoltsM9 x 1 x 43
Connecting Rod Part Number12649190
Crankshaft MaterialCast Iron
Crankshaft Part Number12584997
Crankshaft Main Journal2.559 in.
Crankshaft Rod Journal2.100 in.
Reluctor Wheel58x

L92 Cylinder Heads

L92 Cylinder Head Specs
Casting Numbers2716, 5364, 823
Combustion Chamber Volume70cc
Intake Port ShapeRectangle
Intake Runner Volume257cc
Exhaust Port ShapeD-Port
Exhaust Runner Volume87cc
Intake Valve Diameter2.165 in.
Exhaust Valve Diameter1.590 in.
Cylinder Head Bolt StyleTorque to Yield (TTY)
Cylinder Head Bolt Size(10) M11 x 2 x 100, (5) M8 x 1.25 x 45

L92 Cam Specifications

L92 Camshaft Specs
Camshaft Part Number12612273
Duration @ .050 in. (int./exh.)198°/209°
Valve Lift (int./exh.)0.500 in./.500 in.
Lobe Separation115°
Cam Gear Attachment1-Bolt
Cam Gear Poles4x
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

L92 Valvetrain

L92 Valvetrain Specs
Lifter StyleHydraulic Roller
Lifter Link StylePlastic Lifter Tray
Lifter Body Diameter0.842 in.
Pushrod Length7.385 in.
Rocker Arm Mounting StylePedestal
Rocker Arm StyleDie-Cast, Roller Fulcrum
Rocker Ratio1.7
Rocker OffsetIntake Rocker
Valve Spring StyleBeehive
Valve Spring ColorNatural
Valve Angle15 Degrees
Intake Valve MaterialSteel - Solid Stem
Intake Valve Dia.2.165 in.
Exhaust Valve MaterialSteel - Solid Stem
Exhaust Valve Dia.1.590 in.

Other Key L92 Specs

Throttle Body, Fuel Injectors, Oil Pan Specs & More
Intake ManifoldTruck-style
Throttle Body87mm, 4-bolt
Throttle ControlElectronic (drive-by-wire)
Fuel Injector Part Number12580681
Fuel Injector Flow30 lbs./hr. at 58 psi
Flex Fuel Capable (E-85)No
Fuel Injector Length (between O-Rings)1.870 in.
Fuel Injector ConnectorEV6-USCAR
Crankshaft Reluctor Ring58x
Camshaft SensorFront mount, 4x on cam
Oil Pan Sump LocationDeep rear sump
Oil PumpHigh volume (1.25 c.i. per rev. @ 33 psi)

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  1. Pingback: LS Engines 101: An Introductory Overview of the Gen III/IV LS Engine Family - OnAllCylinders

  2. Jordan Seibert says:

    Are there any known issues with the AFM components not connected causing problems? I have a prior April 1 L92 and I want to be sure it won’t cause issues.

    • Chad Wilson says:

      The AFM will not cause problems if it was never installed into the computer that is where you would have issues but the lifters and oil pack on the valley wont be there so you should be good it was just a different design to the Block than and Non AFM Block.

  3. Can you change intake manifold from the truck style to the camaro style so you can run the big one piece engine cover without losing performance?

  4. Brian Nutter says:

    Jordan, If you had the early engine and the lifters have never been activated, they will not be a problem.

  5. Brian Nutter says:

    Shane, the Truck intakes are actually a bit better across the typical RPM range in terms of average power. A LS3 would also require changing parts of the accessory drive to clear the throttle body. ICT Billet has some brackets to do this.

  6. Russell Neville says:

    I have a 98K 1500 It has a 5.7 in desperate need of some horsepower only 158,000 on the truck and drivetrain

  7. 08 Escalade preignition on startup. Backfires and ringing on starter and ring gear. 145000 km.

  8. one of these sounds perfect for my 93 Caprice the ole 305 is purty tired.. probably just run an aftermarket intake and F.I. system and drive the ignition with an MSD box.

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  11. I got a 2008 GMC Yukon Denali and I’m switching the intake manifold. What size is the manifold front height? And what brand/type would you recommend?

    • John R Wehunt says:

      You don’t want to change the intake. It is very good for your application. You will power where you need it if you change the intake.

  12. David Fields says:

    I would love to get on on this subject. I have a 2000 chevy 2500 4×4. Has a LS 6.0 with over 300000 miles. Can I put a LS 6.2 in it with not a lot of trouble. Can I use the same trans.

    • Vic Nalbandian says:

      Switching to a 6.2L LS from the 6.0L LQ4 Would be problematic .. the ECM and wiring harness are different, the LQ4 has a 24X tooth reluctant wheel… the 6.2L has a 58X reluctant wheel. The transmission should bolt up without a issue to the block but If I’m not mistaken the 6L has a longer crankshaft rear journal protruding out where the flywheel bolts up that will become a issue . The only way to do the swap would be with a aftermarket ecm and harness such as Holley terminator X max with transmission control. You might as well just rebuilt and maybe stroke your 6L . It would be easier on the wallet.

  13. I have a like new L92 camshaft. I would like to use this cam in a Gen 4 5.3 with AFM delete. I have heard that AFM cams used in AFM delete application will trigger P0300 misfire codes. Is this true for the L92 camshaft?

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  15. Pingback: L92 6.2L Engine Upgrade Guide: Expert Advice for L92 Mods to Maximize Performance

  16. David Pope says:

    I did has a 07 yukon denali with this motor in it i ended up totaling it so i pull the motor an swapped it in my06 silverado crew cab that had a 5.3 with two stages of nitrous witha a total of 275 shot and pulled the 4L60 out and put a 4L80 in and i drive it every day the truck was all ready fast but now its a totally dif. ttruck the 6.2 we put a tsp cam heads and already had a cold air intake the truck makes a litte over 900whp with the bottle ever happy i did the swap and it was pretty simple.

  17. Hello!

    I have an ’08 Suburban. I swapped out the stock 5.3L with AFM (I think it was an LC9), for a 6.2L L92 without the AFM. Now I want to swap out the automatic 4L65 transmission for a manual NV4500. I have found absolutely nothing on the Web for doing this in a Suburban with a Gen4 engine, but I still believe I can do it.

    I’m guessing at a minimum I will need to delete the transmission from the tune and possibly change the driveshaft.

    Still I have questions:

    1) Can I keep the stock electronic transfer case?

    2) If yes, will I need an adaptor for the new transmission?

    Thank you for your help.

  18. Okay so I have a 07.5 Chevy Silverado 1500 with the 5.3 liter AFM I’m looking to put a 6.2 liter in it stock motor what motor do I go with do they have a 6.2 liter with AFM I got a edge programmer to turn the AFM off just want a little more power

  19. Charles C. says:

    This engine designation is incorrect. L94 has AFM, VVT and FF. L92 only has VVT

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