CNC ported GM 862/706 Castings, 227cc intake runner, 84cc exhaust runner, 62cc chamber. Our stage 1 will use stock valves in the 2.0/1.55 size (sold as a pair)
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CNC ported GM 862/706 Castings
227cc intake runner, 84cc exhaust runner
62cc chamber
Our stage 1 will use stock valves in the 2.0/1.55 size
| Lift | Intake Flow (cfm) | Exhaust Flow (cfm) |
| .200" | 148 | 110 |
| .300" | 207 | 144 |
| .400" | 254 | 186 |
| .500" | 292 | 206 |
| .600" | 308 | 223 |
| .650" | 310 | 226 |
