stock head specs

.100 59 .100 39
.200 108 .200 73
.300 142 .300 100
.400 148 .400 111
.500 150 .500 113
130cc intake cambers
63cc combustion cambers
43cc exhaust cambers
1.78 intake 1.46 exhaust valves

This seems to be the norm for the E7TE, but not 100% sure.