SDPC CNC Ported LS3 Heads are now available through RPMSpeed! These come with Dual valve springs
- Valve Angle: 15-degree
- Combustion Chamber: 70cc*
- Intake Port Volume: 279cc*
- Exhaust port Volume: 99cc*
- Minimum Cylinder Bore Required: 4.000"
Milling Information for Combustion Chamber Sizing:
- - Approximately 0.006 per 1-cc
- For 68-cc Chamber Remove 0.012
- For 65-cc Chamber Remove 0.030
Specifications:
- Max Lift: 0.675"
- Locks: 7-degree
- Retainers: Titanium
- Valves: Manley Stainless Steel
Lift Int Exh
- .100" 70cfm 52cfm
- .200" 153cfm 118cfm
- .300" 225cfm 180cfm
- .400" 280cfm 201cfm
- .500" 324cfm 217cfm
- .600" 350cfm 230cfm
- .650" 358cfm 236cfm
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