L92 6.2L engine: specs, donor vehicles & swap notes
The L92 is a 6.2 L aluminum-block Generation IV engine built 2007–2008, rated 403 hp. It came in 5 vehicle applications, including Cadillac Escalade (L92 for MY 2007–2008, L9H for MY 2009, L94 for MY 2010–2013), Chevrolet Tahoe LTZ (as RPO code L92). Things to know: it has variable valve timing.
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| Spec | Value |
|---|---|
| RPO | L92 |
| Family | Generation IV |
| Years | 2007–2008 |
| Displacement | 6.2 L / 376 ci |
| Horsepower | 403 hp |
| Torque | 415–417 lb-ft |
| Bore × stroke | 4.065 × 3.622 in |
| Compression | 10.50:1 |
| Block | aluminum |
| AFM/DOD | No |
| VIN 8th digit | 8 |
| Reluctor | 58x |
| Stock cam | Cam PN 12612273; duration 198°/209° @.050 in. int./exh.; valve lift 0.500"/0.500" int./exh.; 115° LSA; 1-bolt gear, 4x; AFM No, VVT Yes. |
| Firing order | 1-8-7-2-6-5-4-3 |
| Head casting | 2716, 5364, 823 |
- Dormant AFM hardware in pre-April-2006 1st-design engines. Fix: If you're doing a cam swap and have one of the earlier engines, now is a good time to use an AFM delete kit.
- Spring-loaded timing chain tensioner. Fix: Install the wedge-style (early) LS2 timing chain damper.
- Weak cast pistons. Fix: A set of forged pistons should be high on your priority list.
Aluminum, VVT
The L92 specs above are not yet confirmed against GM documents; GM ratings varied by year and vehicle.
How the L92 differs from the other 6.2 L Gen IV engines
The L92 is one of the seven 6.2 L Gen IV engines we list: L92, L94, L99, L9H, LS3, LS9, LSA. From our engine table:
- No AFM. The L94, L99 have it, so the L92 is the easier cam-swap candidate of the group.
- Compression 10.50:1, within the group's 9.1–10.7:1 spread.
- Up to 403 hp from the factory (4th of the seven 6.2 L Gen IV engines we list; the group tops out at 638 hp).
- Variable valve timing. Also on the L94, L99, L9H.
- Built 2007–2008.
Swapping the L92: what to plan for
- Computer: the L92 has a 58x crank. An E38 or E67 matches it; a 0411/P59 also needs a 58x-to-24x converter box and its own sensor and knock-sensor wiring. Throttle and wiring have to suit the computer too. More: how to wire your LS (the full checklist for your engine and computer).
- VVT: on a VVT L92 the cam phaser and VVT timing cover change what bolts on: only some water pumps clear a VVT timing cover, and a non-VVT cam needs a VVT delete and a tune. More: accessory drives.
- From a truck or SUV (Cadillac Escalade, Chevrolet Tahoe LTZ, GMC Sierra 1500 Denali, GMC Yukon Denali / Yukon XL Denali and 1 more): truck accessory drive spacing (the farthest forward of the three), and the factory truck oil pan hangs low; most car swaps need a swap pan. More: accessory drive spacing · oil pans.
Refresh parts for the L92
From our Gen IV refresh list, the parts that are specific to the L92. Seals, gaskets and the upgrades worth doing on any Gen IV with the engine out are in the full refresh list, next to every torque spec.
| Part | GM part # | Why for this engine |
|---|---|---|
| GM Performance composition head gasket, LS2/LS3/L92, each | 12610046 | Listed for the L92; a new gasket goes on any time the heads come off. |
| OEM-style cylinder head gasket LS3/L92 6.2L, standard LS bolt pattern | 12610046 | Listed for the L92; a new gasket goes on any time the heads come off. |
| LSXceleration Gen IV LS knock sensor 28-23730 | 28-23730 | The L92 has its knock sensors on the side of the block. |
| GM Gen IV camshaft position sensor 12591720 (58x engines) | 12591720 | 58x L92: the cam sensor lives in the front cover. |
| Chevrolet Performance 58x crankshaft position sensor 12703627 | 12703627 | 58x L92: the crank sensor is behind the starter. |
From real tunes: 6.2 L on a Gen IV computer
What these settings look like in the 462 naturally aspirated pump-gas tunes for 6.2 L engines on Gen IV computers (E38, E67 and the 24x E40) in our tune library (as of 2026-10-15). Every RPO of this size is pooled, not only the L92, and so are all cams, heads and builds: that is why the ranges are wide. Use them to spot a value that is far outside what works, not as your numbers.
| Setting | Range | Median | Tunes |
|---|---|---|---|
| Hot idle target | 550 rpm to 900 rpm | 700 rpm | 462 (middle 80%) |
| Warm idle airflow, in gear | 6.5 g/s to 13.2 g/s | 7.9 g/s | 462 (middle 80%) |
| Idle spark (around 800 rpm) | 13° to 21° | 15° | 462 (middle 80%) |
| Power enrichment (PE) lambda | 0.76 to 0.86 | 0.79 | 449 (middle 80%) |
| WOT spark at 5,000 rpm, about 0.9 g/cyl | 11.0° to 27.5° | 20.5° | 462 (middle 80%) |
For starting values matched to your L92's cam, injectors and fuel, use the turn-on tune builder. Always finish on a dyno, and read our safe tuning limits before any wide-open pass.
Donor vehicles with the L92
Where to find an L92 at the junkyard: 5 vehicle applications below. Confirm it from the RPO sticker in the glovebox or the 8th VIN digit (for the L92: 8).
| Vehicle | Years |
|---|---|
| Cadillac Escalade (L92 for MY 2007–2008, L9H for MY 2009, L94 for MY 2010–2013) | 2007–2013 |
| Chevrolet Tahoe LTZ (as RPO code L92) | 2008–2009 |
| GMC Sierra 1500 Denali | 2007–2013 |
| GMC Yukon Denali / Yukon XL Denali (same as Cadillac Escalade) | 2007–2013 |
| Hummer H2 | 2008–2009 |
Buying a used L92
A used L92 has no single part number, so this page does not link a search. Confirm the engine from the RPO sticker or the 8th VIN digit (for the L92: 8) before you buy.
Next steps
- Plan a swap with the L92
- Find a cam for the L92
- What the L92 tune needs
- Compare every LS donor engine
- Size injectors and fuel pump
- LS torque specs
- Swap guides by vehicle