Description
| Valve Angle | 18deg |
| Intake valve | 2.450 |
| Exhaust valve | 1.850 |
| intake vol | 472cc |
| Exhaust vol | |
| Chamber vol | 82-86cc |
| Peak Int Flow | 505cfm@.900 |
| bare | |
| assm | |
| Notes | |
| chamber softening and "power adder" exhaust port available on all heads |
Pontiac Big Chief
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