The following article is broken down into four sections, click on each to link to that section:
1 - Cast Iron Head Flow Data
2 - Aluminum Head Flow Data
3 - Cleveland Style Head Flow Data
4 - Definitions
I have tried to compile many different sources of flow bench data so one could see what they could expect from a given set of heads. As new data becomes available it will be added to the charts. To print --> set your printer for "Landscape mode" (i.e. make it print sideways on a page), this should give you all the data.
Note: all flows are given in cubic feet per minute (cfm) and taken with a port pressure differential of 28" of water.
|
Head Casting
|
I / E
|
Valve
Size
|
Lift
|
Port Configuration
|
Source
|
|
0.100
|
0.200
|
0.300
|
0.400
|
0.500
|
0.600
|
0.700
|
| 289 Stock |
I
|
1.78
|
44.9
|
91.2
|
132.5
|
154.5
|
168.0
|
166.5
|
-
|
Stock |
Mustang & Fords - December 1999 |
| 289 Stock |
E
|
1.45
|
41.0
|
71.6
|
95.1
|
110.7
|
120.1
|
124.8
|
-
|
Stock |
Mustang & Fords - December 1999 |
| 289 Stock |
I
|
1.78
|
50
|
97
|
127
|
156
|
165
|
170
|
-
|
Stock |
5.0 Magazine - June 1998 |
| 289 Stock |
E
|
1.45
|
37
|
71
|
93
|
104
|
107
|
110
|
-
|
Stock |
5.0 Magazine - June 1998 |
| 289 Ported |
I
|
1.88
|
60
|
119
|
162
|
185
|
190
|
192
|
-
|
Stage 3 |
5.0 Magazine - June 1998 |
| 289 Ported |
E
|
1.60
|
52
|
110
|
142
|
150
|
146
|
146
|
-
|
Stage 3 |
5.0 Magazine - June 1998 |
| 289 Hi-Po |
I
|
1.78
|
55.3
|
98.8
|
139.5
|
160.5
|
169.5
|
177.0
|
-
|
Stock |
Mustang & Fords - December 1999 |
| 289 Hi-Po |
E
|
1.45
|
41.4
|
71.9
|
98.2
|
112.6
|
121.0
|
125.1
|
-
|
Stock |
Mustang & Fords - December 1999 |
| |
| DO 351 Stock |
I
|
1.84
|
58.7
|
105.6
|
152.0
|
171.0
|
181.5
|
189
|
-
|
Stock |
Mustang & Fords - December 1999 |
| DO 351 Stock |
E
|
1.54
|
51.8
|
90.4
|
106.8
|
112.9
|
114.8
|
115.4
|
-
|
Stock |
Mustang & Fords - December 1999 |
| DO 351 Stock |
I
|
1.84
|
52
|
103
|
149
|
174
|
183
|
185
|
186
|
Stock |
Super Ford - Aug. 1989 |
| DO 351 Stock |
E
|
1.54
|
48
|
77
|
100
|
113
|
118
|
118
|
117
|
Stock |
Super Ford - Aug. 1989 |
| DO 351 Stock |
I
|
1.94
|
-
|
120
|
182
|
219
|
225
|
228
|
-
|
Stage 3 |
MM&FF - Spring 1984 |
| DO 351 Stock |
E
|
1.60
|
-
|
99
|
135
|
144
|
150
|
153
|
-
|
Stage 3 (old techniques) |
MM&FF - Spring 1984 |
| DO 351 Stock |
I
|
1.94
|
62
|
123
|
178
|
216
|
221
|
224
|
222
|
Stage 3 |
Super Ford - Aug. 1989 |
| DO 351 Stock |
E
|
1.60
|
51
|
110
|
146
|
161
|
171
|
172
|
171
|
Stage 3 ("D" port) |
Super Ford - Aug. 1989 |
| DO 351 Stock |
I
|
1.94
|
64
|
123
|
175
|
205
|
219
|
-
|
-
|
CNC Ported |
www.powerheads.com |
| DO 351 Stock |
E
|
1.60
|
62
|
109
|
150
|
167
|
172
|
-
|
-
|
CNC Ported |
www.powerheads.com |
| |
| 87 - 95 Mustang (E7TE) |
I
|
1.78
|
-
|
116
|
148
|
158
|
155
|
-
|
-
|
Stock |
Super Ford - March 1991 |
| 87 - 95 Mustang (E7TE) |
E
|
1.45
|
-
|
78
|
109
|
119
|
122
|
-
|
-
|
Stock |
Super Ford - March 1991 |
| 87 - 95 Mustang (E7TE) |
I
|
1.78
|
57
|
114
|
142
|
146
|
150
|
-
|
-
|
Stock |
Super Ford - April 1991 |
| 87 - 95 Mustang (E7TE) |
E
|
1.45
|
40
|
78
|
107
|
118
|
123
|
-
|
-
|
Stock |
Super Ford - April 1991 |
| 87 - 95 Mustang (E7TE) |
I
|
1.78
|
59
|
114
|
144
|
156
|
156
|
156
|
-
|
Stock |
Super Ford - Sept. 1991 |
| 87 - 95 Mustang (E7TE) |
E
|
1.45
|
42
|
78
|
105
|
115
|
116
|
117
|
-
|
Stock |
Super Ford - Sept. 1991 |
| 87 - 95 Mustang (E7TE) |
I
|
1.78
|
57
|
116
|
151
|
166
|
169
|
172
|
-
|
Home Porter |
Super Ford - Sept. 1991 |
| 87 - 95 Mustang (E7TE) |
E
|
1.45
|
42
|
78
|
105
|
120
|
128
|
133
|
-
|
Home Porter |
Super Ford - Sept. 1991 |
| 87 - 95 Mustang (E7TE) |
I
|
1.78
|
62
|
122
|
157
|
187
|
196
|
199
|
-
|
Pro Porter |
Super Ford - Sept. 1991 |
| 87 - 95 Mustang (E7TE) |
E
|
1.45
|
51
|
84
|
113
|
129
|
139
|
142
|
-
|
Pro Porter |
Super Ford - Sept. 1991 |
| 87 - 95 Mustang (E7TE) |
I
|
1.78
|
48
|
90
|
135
|
150
|
161
|
164
|
-
|
Stock |
The Corral Website |
| 87 - 95 Mustang (E7TE) |
E
|
1.45
|
41
|
80
|
117
|
140
|
149
|
151
|
-
|
Stock |
The Corral Website |
| 87 - 95 Mustang (E7TE) |
I
|
1.85
|
-
|
125
|
174
|
193
|
199
|
208
|
-
|
Ported |
The Corral Website |
| 87 - 95 Mustang (E7TE) |
E
|
1.54
|
-
|
114
|
145
|
153
|
157
|
158
|
-
|
Ported |
The Corral Website |
| 87 - 95 Mustang (E7TE) |
I
|
1.78
|
51.8
|
94.7
|
131.1
|
140.9
|
153.9
|
-
|
-
|
Stock |
MM&FF - July 1999 |
| 87 - 95 Mustang (E7TE) |
E
|
1.45
|
39.2
|
73.7
|
95.7
|
103.6
|
106.7
|
-
|
-
|
Stock |
MM&FF - July 1999 |
| 87 - 95 Mustang (E7TE) |
I
|
1.90
|
60.0
|
115.4
|
164.3
|
191.0
|
203.0
|
-
|
-
|
CNC Ported |
MM&FF - July 1999 |
| 87 - 95 Mustang (E7TE) |
E
|
1.60
|
58.9
|
103.0
|
141.7
|
159.1
|
164.0
|
-
|
-
|
CNC Ported |
MM&FF - July 1999 |
| 87 - 95 Mustang (E7TE) |
I
|
1.78
|
55
|
100
|
140
|
149
|
163
|
-
|
-
|
Stock |
www.powerheads.com |
| 87 - 95 Mustang (E7TE) |
E
|
1.45
|
42
|
78
|
101
|
110
|
113
|
-
|
-
|
Stock |
www.powerheads.com |
| 87 - 95 Mustang (E7TE) |
I
|
1.90
|
64
|
122
|
174
|
203
|
215
|
-
|
-
|
CNC Ported |
www.powerheads.com |
| 87 - 95 Mustang (E7TE) |
E
|
1.60
|
62
|
109
|
150
|
169
|
174
|
-
|
-
|
CNC Ported |
www.powerheads.com |
| |
| GT40 (1960s Original) |
I
|
1.90
|
63.4
|
123.2
|
165.8
|
185.8
|
195.4
|
199.1
|
-
|
NOS Stock Ports |
Super Ford - Oct. 1992 |
| GT40 (1960s Original) |
E
|
1.60
|
59.3
|
113.1
|
135.7
|
147.1
|
151.8
|
153.4
|
-
|
NOS Stock Ports |
Super Ford - Oct. 1992 |
| GT40 (1960s Original) |
I
|
1.862
|
73.3
|
134.6
|
159.9
|
191.0
|
210.2
|
219.1
|
-
|
Stage 3 Ported |
Super Ford - Oct. 1992 |
| GT40 (1960s Original) |
E
|
1.679
|
54.7
|
104.3
|
141.7
|
172.2
|
186.4
|
191.9
|
-
|
Stage 3 Ported |
Super Ford - Oct. 1992 |
| |
| GT-40 Cast Iron |
I
|
1.84
|
59
|
126
|
176
|
193
|
195
|
-
|
-
|
Ford Development |
Super Ford - April 1991 |
| GT-40 Cast Iron |
E
|
1.54
|
45
|
91
|
124
|
139
|
149
|
-
|
-
|
Ford Development |
Super Ford - April 1991 |
| GT-40 Cast Iron |
I
|
1.84
|
52
|
115
|
156
|
181
|
187
|
194
|
-
|
Ford Development |
Super Ford - April 1991 |
| GT-40 Cast Iron |
E
|
1.54
|
70
|
116
|
140
|
146
|
150
|
151
|
-
|
Ford Development |
Super Ford - April 1991 |
| GT-40 Cast Iron |
I
|
1.84
|
54
|
107
|
157
|
183
|
192
|
196
|
-
|
Stock |
Super Ford - Sept. 1991 |
| GT-40 Cast Iron |
E
|
1.54
|
47
|
94
|
119
|
128
|
128
|
129
|
-
|
Stock |
Super Ford - Sept. 1991 |
| GT-40 Cast Iron |
I
|
1.84
|
57
|
119
|
163
|
187
|
193
|
199
|
-
|
Home Porter |
Super Ford - Sept. 1991 |
| GT-40 Cast Iron |
E
|
1.54
|
51
|
94
|
121
|
133
|
140
|
142
|
-
|
Home Porter |
Super Ford - Sept. 1991 |
| GT-40 Cast Iron |
I
|
1.84
|
66
|
122
|
175
|
200
|
214
|
220
|
-
|
Pro Porter |
Super Ford - Sept. 1991 |
| GT-40 Cast Iron |
E
|
1.54
|
53
|
115
|
148
|
181
|
188
|
191
|
-
|
Pro Porter |
Super Ford - Sept. 1991 |
| GT-40 Cast Iron |
I
|
1.84
|
60.9
|
126.5
|
171.7
|
186.6
|
195.4
|
-
|
-
|
Stock Ports JBA Valve Job |
Super Ford - Oct. 1992 |
| GT-40 Cast Iron |
E
|
1.54
|
57.0
|
102.4
|
128.2
|
139.2
|
140.8
|
-
|
-
|
Stock Ports JBA Valve Job |
Super Ford - Oct. 1992 |
| GT-40 Cast Iron |
I
|
1.84
|
-
|
111
|
159
|
183
|
185
|
190
|
-
|
Stock |
The Corral Website |
| GT-40 Cast Iron |
E
|
1.54
|
-
|
28.5
|
125
|
129
|
129
|
-
|
-
|
Stock |
The Corral Website |
| GT-40 Cast Iron |
I
|
1.84
|
-
|
115
|
166
|
193
|
208
|
210
|
-
|
Stage 3 (stock valve) |
The Corral Website |
| GT-40 Cast Iron |
E
|
1.54
|
-
|
101
|
142
|
172
|
174
|
173
|
-
|
Stage 3 (stock valve) |
The Corral Website |
| GT-40 Cast Iron |
I
|
1.94
|
98
|
156
|
207
|
225
|
237
|
242
|
-
|
Stage 3 (Manley Race Flo Valve) |
The Corral Website |
| GT-40 Cast Iron |
E
|
1.60
|
127
|
155
|
178
|
195
|
203
|
203
|
-
|
Stage 3 (Manley Race Flo Valve) |
The Corral Website |
| |
| GT-40P Cast Iron |
I
|
1.84
|
61
|
128
|
169
|
195
|
196
|
193
|
-
|
Stock |
Super Ford - May 1999 |
| GT-40P Cast Iron |
E
|
1.46
|
52
|
90
|
123
|
135
|
139
|
142
|
-
|
Stock |
Super Ford - May 1999 |
| GT-40P Cast Iron |
I
|
1.84
|
65
|
124
|
173
|
203
|
207
|
203
|
-
|
Stage 1 |
Super Ford - May 1999 |
| GT-40P Cast Iron |
E
|
1.46
|
58
|
102
|
139
|
159
|
162
|
169
|
-
|
Stage 1 |
Super Ford - May 1999 |
| |
| World Products Windsor |
I
|
2.02
|
-
|
123
|
167
|
206
|
224
|
241
|
-
|
Stock |
Super Ford - March 1991 |
| World Products Windsor |
E
|
1.60
|
-
|
106
|
129
|
139
|
147
|
150
|
-
|
Stock |
Super Ford - March 1991 |
| World Products Windsor |
I
|
2.02
|
-
|
131
|
180
|
213
|
246
|
246
|
-
|
Tapered stem valves |
Super Ford - March 1991 |
| World Products Windsor |
E
|
1.60
|
-
|
109
|
128
|
140
|
150
|
150
|
-
|
Tapered stem valves |
Super Ford - March 1991 |
| World Products Windsor |
I
|
2.02
|
61
|
120
|
162
|
199
|
221
|
230
|
-
|
Stock |
Super Ford - April 1991 |
| World Products Windsor |
E
|
1.60
|
50
|
100
|
122
|
137
|
148
|
150
|
-
|
Stock |
Super Ford - April 1991 |
| World Products Windsor Jr. |
I
|
2.02
|
64.2
|
125.2
|
176.5
|
210.3
|
239
|
260
|
-
|
Stage 1 |
Darrell Jermain - CM mailing list |
| World Products Windsor Jr. |
E
|
1.60
|
-
|
96
|
126.6
|
151
|
167.8
|
178
|
-
|
Stage 1 |
Darrell Jermain - CM mailing list |
| World Products Windsor Senior |
I
|
2.02
|
61
|
124
|
162
|
196
|
218
|
-
|
-
|
Stock |
www.powerheads.com |
| World Products Windsor Senior |
E
|
1.60
|
52
|
98
|
121
|
137
|
150
|
-
|
-
|
Stock |
www.powerheads.com |
| |
| SVO N351 |
I
|
2.02
|
-
|
141
|
160
|
212
|
232
|
244
|
255
|
Stock |
MM&FF - Aug. 1997 |
| SVO N351 |
E
|
1.60
|
-
|
97
|
127
|
142
|
161
|
169
|
172
|
Stock |
MM&FF - Aug. 1997 |
| SVO N351 |
I
|
2.02
|
64.8
|
127.7
|
173.2
|
210.8
|
232.5
|
248
|
255.3
|
Valve Job Only |
MM&FF - Jan. 1998 |
| SVO N351 |
E
|
1.60
|
49.7
|
100.3
|
132.9
|
148
|
155.9
|
167.8
|
174.6
|
Valve Job Only |
MM&FF - Jan. 1998 |
| SVO N351 |
I
|
2.02
|
63.9
|
127.3
|
178.6
|
217.2
|
240.1
|
248.4
|
256.9
|
Bowl Blend |
MM&FF - Jan. 1998 |
| SVO N351 |
E
|
1.60
|
47.8
|
94.8
|
140.6
|
169.9
|
181.2
|
186.8
|
190
|
Bowl Blend |
MM&FF - Jan. 1998 |
