Engine Compression
| Compression Ratio | |||
| 255" | 8.8:1 | ||
| 302" | |||
| Mustang & Capri | |||
| Calif. Only | 8.1:1 | ||
| All Others | 8.4:1 | ||
| 351" W | 8.3:1 | ||
| Recommended Fuel | Unleaded (87 AKI Minimum) | ||
Test compression with all spark plugs removed and engine at normal operating temperature. Crank engine through at least five compression strokes before recording reading. Maximum compression variation should not exceed 25% between highest and lowest cylinders.