Engine Compression
When making compression checks, disconnect ignition switch Pink wire from High Energy Ignition (HEI) system. With air cleaner removed and throttle and choke wide open, crank engine through at least 4 compression strokes.
ENGINE COMPRESSION SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Compression Ratio | ||
| 250" | 8.25:1 | |
| 292" | 8.0:1 | |
| Compression Pressure | 130 psi | |
| Maximum Pressure Variation | 20 psi | |
| Recommended Fuel | Unleaded (87 AKI Minimum) | |