Cast Iron 5.0 Heads

Small Block Ford Head Flow Data

Introduction

The following article is broken down into four sections, click on each to link to that section:

1 - Definitions
2 - Cast Iron Head Flow Data
3 - Aluminum Head Flow Data
4 - Cleveland Style Head Flow Data

I have tried to combile 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.

Cast Iron Heads

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

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

GT40 Cast Iron

I

1.84

54

107

157

183

192

196

-

Stock

Super Ford - Sept. 1991

GT40 Cast Iron

E

1.54

47

94

119

128

128

129

-

Stock

Super Ford - Sept. 1991

GT40 Cast Iron

I

1.84

57

119

163

187

193

199

-

Home Porter

Super Ford - Sept. 1991

GT40 Cast Iron

E

1.54

51

94

121

133

140

142

-

Home Porter

Super Ford - Sept. 1991

GT40 Cast Iron

I

1.84

66

122

175

200

214

220

-

Pro Porter

Super Ford - Sept. 1991

GT40 Cast Iron

E

1.54

53

115

148

181

188

191

-

Pro Porter

Super Ford - Sept. 1991

GT40 Cast Iron

I

1.84

-

111

159

183

185

190

-

Stock

The Corral Website

GT40 Cast Iron

E

1.54

-

28.5

125

129

129

-

-

Stock

The Corral Website

GT40 Cast Iron

I

1.84

-

115

166

193

208

210

-

Stage 3 (stock valve)

The Corral Website

GT40 Cast Iron

E

1.54

-

101

142

172

174

173

-

Stage 3 (stock valve)

The Corral Website

GT40 Cast Iron

I

1.94

98

156

207

225

237

242

-

Stage 3 (Manley Race Flo Valve)

The Corral Website

GT40 Cast Iron

E

1.60

127

155

178

195

203

203

-

Stage 3 (Manley Race Flo Valve)

The Corral Website

GT40P Cast Iron

I

1.84

61

128

169

195

196

193

-

Stock

Super Ford - May 1999

GT40P Cast Iron

E

1.46

52

90

123

135

139

142

-

Stock

Super Ford - May 1999

GT40P Cast Iron

I

1.84

65

124

173

203

207

203

-

Stage 1

Super Ford - May 1999

GT40P Cast Iron

E

1.46

58

102

139

159

162

169

-

Stage 1

Super Ford - May 1999

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

Home* Definitions* Aluminum* Cleveland*

Head Casting	I / E	Valve Size	Lift							Port Configuration	Source
Head Casting	I / E	Valve Size	0.100	0.200	0.300	0.400	0.500	0.600	0.700	Port Configuration	Source
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

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

GT40 Cast Iron	I	1.84	54	107	157	183	192	196	-	Stock	Super Ford - Sept. 1991
GT40 Cast Iron	E	1.54	47	94	119	128	128	129	-	Stock	Super Ford - Sept. 1991
GT40 Cast Iron	I	1.84	57	119	163	187	193	199	-	Home Porter	Super Ford - Sept. 1991
GT40 Cast Iron	E	1.54	51	94	121	133	140	142	-	Home Porter	Super Ford - Sept. 1991
GT40 Cast Iron	I	1.84	66	122	175	200	214	220	-	Pro Porter	Super Ford - Sept. 1991
GT40 Cast Iron	E	1.54	53	115	148	181	188	191	-	Pro Porter	Super Ford - Sept. 1991
GT40 Cast Iron	I	1.84	-	111	159	183	185	190	-	Stock	The Corral Website
GT40 Cast Iron	E	1.54	-	28.5	125	129	129	-	-	Stock	The Corral Website
GT40 Cast Iron	I	1.84	-	115	166	193	208	210	-	Stage 3 (stock valve)	The Corral Website
GT40 Cast Iron	E	1.54	-	101	142	172	174	173	-	Stage 3 (stock valve)	The Corral Website
GT40 Cast Iron	I	1.94	98	156	207	225	237	242	-	Stage 3 (Manley Race Flo Valve)	The Corral Website
GT40 Cast Iron	E	1.60	127	155	178	195	203	203	-	Stage 3 (Manley Race Flo Valve)	The Corral Website

GT40P Cast Iron	I	1.84	61	128	169	195	196	193	-	Stock	Super Ford - May 1999
GT40P Cast Iron	E	1.46	52	90	123	135	139	142	-	Stock	Super Ford - May 1999
GT40P Cast Iron	I	1.84	65	124	173	203	207	203	-	Stage 1	Super Ford - May 1999
GT40P Cast Iron	E	1.46	58	102	139	159	162	169	-	Stage 1	Super Ford - May 1999

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