| USA specifications | 273 V8 | 318 V8 (LA) | 340 V8 |
|---|---|---|---|
| Gross horsepower, 1968 (1962 for 318-A) | 190 @ 4400 | 230 @ 4400 | 275 @ 5000 |
| Torque, lbs.-ft. , 1968 | 260 @ 2000 | 340 @ 2400 | 340 @ 3200 |
| Compression ratio, 1968 | 9.0 to 1 | 9.2 to 1 | 10.5 to 1 |
| Bore, inches | 3.63 | 3.91 | 4.04 |
| Stroke, inches | 3.312 | 3.312 | 3.312 |
| Carburetor type (1968-73) | 2-bbl. | 2-bbl. | 4-bbl. |
| Fuel | Regular | Regular | Premium |