Bore, stroke, displacement and compression for all 5 Chrysler 392ci engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 392 ci |
|---|---|
| Cylinders | 8 |
| Bore | 4.055–4.090" |
| Stroke | 3.720–3.800" |
| Compression | 10.5–11.4:1 |
| Advertised power | 375–485 hp |
| Years | 2010–2023 |
| Cylinder head data | 4 of 5 engines |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Chrysler 392ci (2010) · 375 hp | 392 ci | 4.055" × 3.795" | 10.5:1 | 375 |
| Chrysler 392ci · 4.090" × 3.720" · 10.9:1 | 392 ci | 4.09" × 3.72" | 10.9:1 | 380–413 |
| Chrysler 392ci (2015) · 430 hp | 392 ci | 4.055" × 3.8" | — | 430 |
| Chrysler 392ci (2021) · 450 hp | 392 ci | 4.09" × 3.73" | 11.4:1 | 450 |
| SRT 6.4 / 392 | 392 ci | 4.09" × 3.72" | — | 485 |
Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.
All are oversquare — bore larger than stroke, which favours revs over low-end torque.
Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.