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» Northern California Ford Owners     » Automotive   » Tech Talk   » Flow No.'s 4-Valve Heads

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Author Topic: Flow No.'s 4-Valve Heads
Larry
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Just got the flow no.'s on my ported heads..@.550lift intake=312 , exhaust =265

Anyone know the stock flow no.'s???

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FAST COBRA VERT.

Posts: 95 | From: Manteca | Registered: Jan 2005  |  :
FasterDamnit
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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

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'92 LX T5
Looked stock, went 11's 11.90 at 115mph.

'65 Mustang 347

www.fordmuscle.com

Livin' in the Carolina Pines

Posts: 2971 | From: NorCal | Registered: Sep 2001  |  :
FoX GT
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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

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- AED -
03 Cobra 10th anni 3.4 Whipple 9.47@141
2012 Mustang GT 10.98@125
2015 Mustang GT


Bring what you got and hope its enough!

Posts: 1955 | From: East bay | Registered: Jun 2004  |  :
93PONY
Mr. Valve Events
Member # 60

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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.

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www.advancedenginedevelopment.com
SCT dealer
Dynotuning

(916)715-7569

Posts: 4265 | From: Fair Oaks, CA | Registered: Nov 2000  |  :
Larry
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Member # 5176

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Thanks for the info...car should be running in 2 weeks.

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FAST COBRA VERT.

Posts: 95 | From: Manteca | Registered: Jan 2005  |  :


 
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