Chrysler 400ci specs: 4.342 x 3.375 in (110.3 x 85.7 mm) bore and stroke, shared by all 6 versions. Displacement, compression and factory ratings.
| Displacement | 400 ci |
|---|---|
| Cylinders | 8 |
| Bore | 4.342" |
| Stroke | 3.375" |
| Compression | 8.2:1 |
| Advertised power | 175–205 hp |
| Years | 1973–1978 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| B 400 2-bbl | 400 ci | 4.342" × 3.375" | 8.2:1 | — |
| B 400 4-bbl | 400 ci | 4.342" × 3.375" | 8.2:1 | — |
| B 400 4-bbl dual exhaust | 400 ci | 4.342" × 3.375" | 8.2:1 | — |
| B 400 4-bbl single exhaust | 400 ci | 4.342" × 3.375" | 8.2:1 | — |
| B 400 4-bbl ELB | 400 ci | 4.342" × 3.375" | 8.2:1 | — |
| B 400 | 400 ci | 4.342" × 3.375" | 8.2:1 | 175–205 |
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.