Here are the flow numbers for the 61-64 223 FORD small chamber head with 1.78 intake 1.51 exhaust.
Air flow is @ 28" test pressure.
Intake CFM
.100"=56
.200"=115
.300"=150
.400"=153
.500"=156
Stock Exhaust peaks at 115
These flow numbers are for a 223 small chamber head 1.84 intake 1.6 exhaust. This head has been race ported and currently holds the SCTA xo/production record, in a 53 FORD @ 135.530 mph. I post these numbers only to encourage others to get the most out of there Vintage FORD engine.
Intake CFM With radius inlet.
.100"=70
.200"=128
.300"=167
.400"=187
.500"=200
Exhaust CFM No pipe or header.
.100"=57
.200"=100
.300"=120
.400"=132
.500"=138
Air flow is @ 28" test pressure.
Intake CFM
.100"=56
.200"=115
.300"=150
.400"=153
.500"=156
Stock Exhaust peaks at 115
These flow numbers are for a 223 small chamber head 1.84 intake 1.6 exhaust. This head has been race ported and currently holds the SCTA xo/production record, in a 53 FORD @ 135.530 mph. I post these numbers only to encourage others to get the most out of there Vintage FORD engine.
Intake CFM With radius inlet.
.100"=70
.200"=128
.300"=167
.400"=187
.500"=200
Exhaust CFM No pipe or header.
.100"=57
.200"=100
.300"=120
.400"=132
.500"=138