Small Block Ford Cast Iron Head Flow Data

Small Block Ford Cast Iron Head Flow Data

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


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  • Text and Photos by Isaac Martin - Originally from Mustang magazine January 1989 edition.

  • c/o = carry over

    Year 1979 1982 1983 1984 1985
    Output - SAE net Horsepower

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