L77 6.0L engine: specs, donor vehicles & swap notes
The L77 is a 6.0 L aluminum-block Generation IV engine built 2010–2017, rated 349–362 hp. It came in 7 vehicle applications, including Holden VE II Commodore, Holden VF Commodore. Things to know: it has AFM, so an aftermarket cam means a full AFM delete.
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| Spec | Value |
|---|---|
| RPO | L77 |
| Family | Generation IV |
| Years | 2010–2017 |
| Displacement | 6.0 L / 364 ci |
| Horsepower | 349–362 hp |
| Torque | 381–391 lb-ft |
| Bore × stroke | 4.0 × 3.622 in |
| Compression | 10.40:1 |
| Block | aluminum |
| AFM/DOD | Yes |
| VIN 8th digit | 2 |
| Reluctor | 58x |
| Throttle | Drive-by-wire |
| Stock cam | Cam PN 12625439; duration 196°/208° @.050 in. int./exh.; valve lift 0.478"/0.466" int./exh.; 116° LSA; 1-bolt gear, 4x; AFM Yes, VVT No. |
| Firing order | 1-8-7-2-6-5-4-3 |
| Head casting | 5364, 823 |
- AFM lifter failure (misfire, engine damage). Fix: An AFM disabler is a device you plug into the vehicle's OBD-II port to deactivate the system at the ECM level.
- AFM lifter tick. Fix: Check the oil condition and level frequently to avoid lifter trouble.
- AFM-related oil/carbon issues. Fix: Check oil condition and level frequently.
Aluminum, AFM, E85-capable
The L77 specs above are not yet confirmed against GM documents; GM ratings varied by year and vehicle.
How the L77 differs from the other 6.0 L Gen IV engines
The L77 is one of the nine 6.0 L Gen IV engines we list: L76, L77, L96, L98, LC8, LFA, LS2, LY6, LZ1. From our engine table:
- Aluminum block. Among the 6.0 L Gen IV engines, the L77 shares it with the L76, L98, LFA, LS2, LZ1; the L96, LC8, LY6 are iron.
- AFM (cylinder deactivation): yes. Same as the L76, LFA, LZ1; the L96, L98, LC8, LS2, LY6 don't.
- Compression 10.40:1, within the group's 9.6–10.9:1 spread.
- Up to 362 hp from the factory (3rd of the nine 6.0 L Gen IV engines we list; the group tops out at 400 hp).
- No VVT (the L96, LC8, LY6, LZ1 have it; the L76 has it (truck applications only)).
- Built E85-capable (flex fuel) from the factory. Swapping an L77 onto E85 still means wiring the flex sensor and setting up the tune for it.
- Built 2010–2017.
Swapping the L77: what to plan for
- Computer: the L77 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).
- Drive-by-wire throttle. Plan on the pedal and throttle body that match the L77, and a computer that runs drive by wire; the base Holley Terminator X is cable-only (the X Max does drive-by-wire). More: drive-by-wire pinout.
- AFM: a stock-cam L77 can have AFM turned off in the tune; an aftermarket cam means a full AFM delete (non-AFM lifters and trays, a non-AFM valley cover, the tune). More: LS cam swap guide.
Refresh parts for the L77
From our Gen IV refresh list, the parts that are specific to the L77. 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 |
|---|---|---|
| LSXceleration Gen IV LS knock sensor 28-23730 | 28-23730 | The L77 has its knock sensors on the side of the block. |
| GM Gen IV camshaft position sensor 12591720 (58x engines) | 12591720 | 58x L77: the cam sensor lives in the front cover. |
| Chevrolet Performance 58x crankshaft position sensor 12703627 | 12703627 | 58x L77: the crank sensor is behind the starter. |
| GM oil pressure screen/filter 12585328 (AFM valley cover) | 12585328 | On 2007-and-later AFM V8s: Clogged screen starves the sender and causes false low-pressure codes on AFM engines. |
| Genuine GM 12610141 valley cover gasket (LS2/LS3, no AFM/DOD) | 12610141 | Needed if you delete AFM on the L77 with a non-AFM valley cover. |
From real tunes: 6.0 L on a Gen IV computer
What these settings look like in the 329 naturally aspirated pump-gas tunes for 6.0 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 L77, 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 850 rpm | 700 rpm | 327 (middle 80%) |
| Warm idle airflow, in gear | 6.0 g/s to 12.3 g/s | 8.0 g/s | 326 (middle 80%) |
| Idle spark (around 800 rpm) | 13° to 20° | 15° | 329 (middle 80%) |
| Power enrichment (PE) lambda | 0.78 to 0.87 | 0.83 | 322 (middle 80%) |
| WOT spark at 5,000 rpm, about 0.9 g/cyl | 12.0° to 25.0° | 19.0° | 329 (middle 80%) |
For starting values matched to your L77'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 L77
Where to find an L77 at the junkyard: 7 vehicle applications below. Confirm it from the RPO sticker in the glovebox or the 8th VIN digit (for the L77: 2).
| Vehicle | Years |
|---|---|
| Chevrolet Caprice | 2011–2017 |
| Holden VE II Commodore | 2010–2013 |
| Holden VE II Ute | 2010–2013 |
| Holden VF Commodore | 2013–2015 |
| Holden VF Ute | 2013–2015 |
| Holden WM Caprice | 2010–2013 |
| Holden WN Caprice | 2013–2015 |
Buying a used L77
A used L77 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 L77: 2) before you buy.