Gasoline Engines
Test compression with engine warm, all spark plugs removed and throttle and choke valves wide open. If using a remote starter switch, disconnect the ignition switch connector (Pink wire) at HEI distributor.
ENGINE COMPRESSION SPECIFICATIONS
| Application | Specification | |||
|---|---|---|---|---|
| Compression Ratio | ||||
| 260" | 2-Bbl. 8.0:1 | |||
| 301" | 2-Bbl. 8.2:1 | |||
| 305" 2-Bbl. & 4-Bbl. | 8.5:1 | |||
| 350" 4-Bbl. | 8.0:1 | |||
| 350" 4-Bbl. (VIN L & R) | 8.5:1 | |||
| 350" Diesel | 22.5:1 | |||
| 403" 4-Bbl. | 8.5:1 | |||
| 455" 4-Bbl. | 8.5:1 | |||
| Recommended Fuel | ||||
| Diesel | (1) 2-D | |||
| Gasoline | Unleaded (87 AKI Minimum) | |||
| Compression Pressure | ||||
| Diesel | 275 psi | |||
| Gasoline | 120-160 psi | |||
| Maximum Variation Between Cylinders | 30% | |||
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