Compression Pressure
With engine warm, all spark plugs removed and throttle wide open, the maximum variation between cylinders should not exceed 20 psi (25 psi in "A" models).
| Application | PSI |
|---|---|
| 318" Man. Trans. (Exc. "A" Models) | 120-160 |
| 318" Auto. Trans. (Exc. "A" Models) | 110-140 |
| 318" "A" Models & 383" | 125-155 |
| 318"-3 | 90-130 |