Here are the stock and ported flow numbers of a 7MGE/GTE cylinder head.
Stock:
Intake
lift-flow
.100-77.4 cfm
.150-113.9 cfm
.200-141.4 cfm
.250-162.8 cfm
.300-176 cfm
.350-179.6 cfm
.400-179.6 cfm
.450-180 cfm
Exhaust
lift-flow
.100-60.4 cfm
.150-93 cfm
.200-112.9 cfm
.250-123.2 cfm
.300-127.8 cfm
.350-130.7 cfm
.400-133.2 cfm
.450-133.2 cfm
Fully Ported (valve stems removed to port + bowl work)
Intake
lift-flow
.100-80.4 cfm
.150-122.4 cfm
.200-159.9 cfm
.250-187.8 cfm
.300-202.4 cfm
.350-211.2 cfm
Exhaust
lift-flow
.100-70 cfm
.150-103.4 cfm
.200-121.0 cfm
.250-131.0 cfm
.300-139.4 cfm
.350-144.7 cfm
We stopped @.350 because most regrind cams don't go past this lift.
Stock:
Intake
lift-flow
.100-77.4 cfm
.150-113.9 cfm
.200-141.4 cfm
.250-162.8 cfm
.300-176 cfm
.350-179.6 cfm
.400-179.6 cfm
.450-180 cfm
Exhaust
lift-flow
.100-60.4 cfm
.150-93 cfm
.200-112.9 cfm
.250-123.2 cfm
.300-127.8 cfm
.350-130.7 cfm
.400-133.2 cfm
.450-133.2 cfm
Fully Ported (valve stems removed to port + bowl work)
Intake
lift-flow
.100-80.4 cfm
.150-122.4 cfm
.200-159.9 cfm
.250-187.8 cfm
.300-202.4 cfm
.350-211.2 cfm
Exhaust
lift-flow
.100-70 cfm
.150-103.4 cfm
.200-121.0 cfm
.250-131.0 cfm
.300-139.4 cfm
.350-144.7 cfm
We stopped @.350 because most regrind cams don't go past this lift.
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