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Chevrolet LV1 specs: 262 ci (4.3L) 6-cylinder, 3.92 x 3.62 in (99.6 x 91.9 mm) bore and stroke, 11:1 compression. Rated 276 hp, 2018–2026.
The Chevrolet 262ci (LV1) is oversquare — the 3.92" bore exceeds the 3.62" stroke by 8.3% — a layout that favors airflow and RPM over leverage at the crank. The 3.62" stroke puts mean piston speed at 4,000 ft/min around 6,650 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 43.7 ci (716 cc).
11:1 on iron heads is high enough that pump premium or better is normally required, and iron holds heat, so it is the less forgiving side of that line.
It is one of 17 engines in the Chevrolet 262ci family, all of them 262 ci — the differences between them are in compression, heads and rating, not displacement. 7 factory variants share these dimensions, rated at 276 hp across 2018–2026.
| Displacement | 262 ci / 4.3 L |
|---|---|
| Bore | 3.92" |
| Stroke | 3.62" |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 11:1 |
| Bore/stroke ratio | 1.083 |
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Advertised HP | 276 hp |
| Years | 2018–2026 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2018 | LV1 net | 276 @ 5200 * | 298 lb-ft @ 3900 * | — |
| 2020 | LV1 net | 276 @ 5200 * | 298 lb-ft @ 3900 * | — |
| 2021 | LV1 net | 276 @ 5200 * | 298 lb-ft @ 3900 * | — |
| 2022 | LV1 net | 276 @ 5200 * | 298 lb-ft @ 3900 * | — |
Factory specification sheet. * Not yet cross-verified.
| Bore/stroke character | 1.083 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,620 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 43.7 ci |
| Static compression | 11:1 — high enough that pump premium or better is normally required |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 2018 | 276 hp | LV1 |
| 2020 | 276 hp | LV1 |
| 2021 | 276 hp | LV1 |
| 2022 | 276 hp | LV1 |
| 2023 | 276 hp | LV1 |
| 2024 | 276 hp | LV1 |
| 2026 | 276 hp | LV1 |
2 factory vehicles, 2018–2026. Each year opens that model's engine table.