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Chevrolet 572ci specs: 572 ci (9.4L) 8-cylinder, 4.56 x 4.375 in (115.8 x 111.1 mm) bore and stroke, 13.36:1 compression. Rated 500 hp, 2022–2023. OHV.
The Chevrolet 572ci is close to square: 4.56" bore against 4.375" stroke, within 4.2%, which splits the difference between a high-revving layout and a torque layout. With a 4.375" stroke, mean piston speed reaches 4,000 ft/min at only 5,500 RPM — the practical ceiling for a production bottom end — which is why a stroke this long makes its power low and runs out of safe revs early. A rod ratio of 1.494 is short — higher piston acceleration and more side-load, typical of stroker combinations and a reason to watch piston speed closely. Each of the 8 cylinders displaces 71.5 ci (1,172 cc).
13.36:1 on iron heads is high for a production gasoline engine; running a ratio like that on pump fuel depends on chamber design and fuel delivery rather than the number alone.
2 factory variants share these dimensions, rated at 500 hp across 2022–2023.
| Displacement | 572 ci / 9.4 L |
|---|---|
| Bore | 4.56" |
| Stroke | 4.375" |
| Cylinders | 8 |
| Configuration | V8 |
| Compression ratio | 13.36:1 |
| Rod length | 6.535" |
| Rod ratio | 1.494 |
| Bore/stroke ratio | 1.042 |
| Piston deck clearance | 0.01" |
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Advertised HP | 500 hp |
| Years | 2022–2023 |
| Bore/stroke character | 1.042 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 4,375 ft/min — in the range typical of performance street engines |
| Rod ratio | 1.494 — short — more side loading and piston dwell at TDC, typical of stroker combinations |
| Displacement per cylinder | 71.5 ci |
| Static compression | 13.36:1 — high enough that pump premium or better is normally required |
| Intake valve diameter | 2.25" |
|---|---|
| Exhaust valve diameter | 1.88" |
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These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 2022 | 500 hp | — |
| 2023 | 500 hp | — |