| SDPC CNC Ported 5.3 Heads are now available through WS6 Store! These come with LS6 Springs, but can be upgraded to PRC Dual valve springs for an additional 250.00. Make your selection below.
* Aluminum, Cathedredal Port
* 862 Castings
* 2.00/1.55 LS1 Valves
* LS6 Springs - Good to .570" Lift
* 220cc Intake Ports
* 61.15cc Combustion Chambers
Our CNC Head Flow Numbers:
Lift Int Exh
.200" 144cfm 111cfm
.300" 199cfm 141cfm
.400" 244cfm 180cfm
.500" 280cfm 203cfm
.600: 286cfm 215cfm
COMPARED TO:
Stock Head Flow Numbers:
Lift Int Exh
.200" 128cfm 93cfm
.300" 179cfm 121cfm
.400" 210cfm 145cfm
.500" 218cfm 163cfm
.600" 226cfm 174cfm
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