This is topic Flow No.'s 4-Valve Heads in forum Tech Talk at Northern California Ford Owners .
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Posted by Larry (Member # 5176) on
:
Just got the flow no.'s on my ported heads..@.550lift intake=312 , exhaust =265
Anyone know the stock flow no.'s???
Posted by FasterDamnit (Member # 442) on
:
From an '03 Mach1
Lift Intake Exhaust
0.100 95 cfm 74 cfm
0.200 161 cfm 126 cfm
0.300 226 cfm 159 cfm
0.400 259 cfm 171 cfm
0.500 266 cfm 175 cfm
0.550 268 cfm 176 cfm
Posted by FoX GT (Member # 4587) on
:
quote:
Originally posted by FasterDamnit:
From an '03 Mach1
Lift Intake Exhaust
0.100 95 cfm 74 cfm
0.200 161 cfm 126 cfm
0.300 226 cfm 159 cfm
0.400 259 cfm 171 cfm
0.500 266 cfm 175 cfm
0.550 268 cfm 176 cfm
Mach 1s and 03-04 cobras have the same heads. These numbers and those posted above are measured in 28" of water.
FR500s
Lift Intake Exhaust
0.100 90 cfm 60 cfm
0.200 168 cfm 129 cfm
0.300 240 cfm 170 cfm
0.400 283 cfm 186 cfm
0.500 298 cfm 192 cfm
0.550 299.5 cfm 193.5 cfm
99s
Lift Intake Exhaust
0.100 87 cfm 68 cfm
0.200 153 cfm 121 cfm
0.300 204 cfm 145 cfm
0.400 223 cfm 153 cfm
0.500 231 cfm 158 cfm
0.550 231 cfm 159 cfm
GT Supercar/GT500
Lift Intake Exhaust
0.100 90.8 cfm 89.6 cfm
0.200 169.1 cfm 168.5 cfm
0.300 234.3 cfm 212.5 cfm
0.400 274.3 cfm 231 cfm
0.500 290.6 cfm 240.5 cfm
0.550 294.6 cfm 245 cfm
Posted by 93PONY (Member # 60) on
:
You'll never run .550" lift on 4V motor.
A lot of the cam manufactures out there rate their cams (lift) with a 2.0 rocker ratio.
Modulars use 1.8 rockers...so actual camshaft lift is not as high as advertised.
Most 4V camshafts run .425-.475" actual lift.
Posted by Larry (Member # 5176) on
:
Thanks for the info...car should be running in 2 weeks.
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