Compression Pressure
At cranking speed with throttle wide open and all plugs removed. Maximum variation between cylinders 15 lbs.
| 283" | 150 lbs. | |
| 327", 250, 275, 300 HP | 160 lbs. | |
| 350 HP | 150 lbs. | |
| 396" | 160 lbs. | |
| 427" 390 HP | 160 lbs. | |
| 425 HP | 150 lbs. | |
VALVE TAPPET CLEARANCE
| All Except 427" 425 HP | Zero Lash, Hydraulic |
| 427" 425 HP | .020" Int..024" Exh. (Hot) |