Bore, stroke, displacement and compression for all 12 Ford 429ci engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 429 ci |
|---|---|
| Cylinders | 8 |
| Bore | 4.080–4.362" |
| Stroke | 3.590–4.100" |
| Compression | 9.3:1 |
| Advertised power | 197–470 hp |
| Years | 1968–2016 |
| Cylinder head data | 2 of 12 engines |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Ford 429ci · 4.362" × 3.590" · 9.3:1 | 429 ci | 4.362" × 3.59" | 9.3:1 | 197–208 |
| 2016 429 470HP | 429 ci | 4.08" × 4.1" | — | 470 |
| N-code 429 Thunder Jet | 429 ci | 4.362" × 3.59" | — | 360 |
| C-code 429 CJ / J-code CJ Ram Air | 429 ci | 4.362" × 3.59" | — | 370 |
| 429 SCJ, C/J code | 429 ci | 4.362" × 3.59" | — | 375 |
| N | 429 ci | 4.362" × 3.59" | — | 208–360 |
| C | 429 ci | 4.362" × 3.59" | — | 370 |
| K | 429 ci | 4.362" × 3.59" | — | 320 |
| Z-code | 429 ci | 4.362" × 3.59" | — | 375 |
| C-code | 429 ci | 4.362" × 3.59" | — | 370 |
| J-code | 429 ci | 4.362" × 3.59" | — | 375 |
| N-code | 429 ci | 4.362" × 3.59" | — | 205–360 |
Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.
11 of 12 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.