Fletch's Carbureted 5.0 Mustangs Please Support Our Sponsors
BIGS Performance Carbs
View Current Auctions
Home * Projects * Tech * Msg Board * Bookshelf * For Sale * Links * Your Cars * About

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

Small Block Ford Aluminum Head Flow Data

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

0.800

SVO J302 AR

I

2.02

67

128

189

232

263

278

284

-

Pro Porter

Super Ford - Sept. 1991

SVO J302 AR

E

1.60

51

105

149

184

213

221

227

-

Pro Porter

Super Ford - Sept. 1991

SVO J302 AR

I

2.02

63

120

165

191

210

210

200

-

Stock

Super Ford - Aug. 1989

SVO J302 AR

E

1.60

52

104

119

135

140

143

144

-

Stock

Super Ford - Aug. 1989

SVO J302 AR

I

2.02

62

123

180

220

246

252

253

-

Stage 3

Super Ford - Aug. 1989

SVO J302 AR

E

1.60

60

110

161

188

201

204

206

-

Stage 3

Super Ford - Aug. 1989

Ford GT40 Aluminum
(1968 version)

I

1.88

54

108

156

183

197

-

-

-

Stock

Super Ford - April 1991

Ford GT40 Aluminum
(1968 version)

E

1.62

45

91

124

139

149

-

-

-

Stock

Super Ford - April 1991

SVO GT40 Aluminum

I

1.94

64.2

114.3

166.5

199.4

212.5

217.4

-

-

Stock

MM&FF - Aug. 1997

SVO GT40 Aluminum

E

1.54

52.3

97.7

128

136.5

134.1

-

-

-

Stock

MM&FF - Aug. 1997

SVO GT40 Aluminum

I

1.94

64

127

180

190

210

202

-

-

Stock

The Corral Website

SVO GT40 Aluminum

E

1.60

58

108

144

153

156

159

-

-

Stock

The Corral Website

SVO GT40 Aluminum

I

1.94

83

146

204

234

246

250

-

-

Stage 3

The Corral Website

SVO GT40 Aluminum

E

1.60

80

122

158

188

194

-

-

-

Stage 3

The Corral Website

SVO GT40X Aluminum

I

1.94

65.2

126.7

172.5

202.5

216.0

214.8

-

-

Stock

Mustang & Ford - Dec. 1999

SVO GT40X Aluminum

E

1.54

52.7

105.3

145.3

149.4

149.1

149.1

-

-

Stock

Mustang & Fords - Dec. 1999

SVO GT40X Aluminum

I

1.94

65.8

129.5

181.5

222

243

-

-

-

Stock

MM&FF - Aug. 1997

SVO GT40X Aluminum

E

1.54

62.1

109.1

147

164

172.3

-

-

-

Stock

MM&FF - Aug. 1997

SVO GT40X Aluminum

I

1.94

54.6

107.8

159.5

197.2

217.4

227.8

234.5

-

Stock

MM&FF - Jan. 1998

SVO GT40X Aluminum

E

1.54

53.1

110.2

144.7

150.3

150.4

149.4

149.7

-

Stock

MM&FF - Jan. 1998

SVO GT40X Aluminum

I

1.94

53

113.5

169.6

206.5

225.6

230.1

-

-

Stock

5.0 Mustang - Feb. 1998

SVO GT40X Aluminum

E

1.54

49.9

106

138.8

152.8

159

160.6

-

-

Stock

5.0 Mustang - Feb. 1998

SVO GT40X Aluminum

I

1.94

63.4

120.9

178.4

219.7

238.9

236

-

-

Street Port Job

5.0 Mustang - Feb. 1998

SVO GT40X Aluminum

E

1.54

53

112.3

151.3

187.2

198.1

201.2

-

-

Street Port Job

5.0 Mustang - Feb. 1998

TFS Street Heat (Will-Burt)

I

2.02

66

133

185

213

225

228

229

-

Stock

Super Ford - Aug. 1989

TFS Street Heat (Will-Burt)

E

1.60

58

80

107

122

132

140

144

-

Stock

Super Ford - Aug. 1989

TFS Street Heat (Will-Burt)

I

1.94

65

130

198

241

261

270

275

-

Stage 3

MM&FF - Aug. 1997

TFS Street Heat (Will-Burt)

E

1.60

54

114

154

182

189

189

189

-

Stage 3

MM&FF - Aug. 1997

TFS Street Heat (Will-Burt)

I

2.02

66

139

202

240

254

268

272

-

Stage 3

Super Ford - Aug. 1989

TFS Street Heat (Will-Burt)

E

1.60

61

118

168

196

207

210

212

-

Stage 3

Super Ford - Aug. 1989

TFS Street Heat (Will-Burt)

I

2.02

-

137

186

215

224

228

-

-

Stock

Super Ford - March 1991

TFS Street Heat (Will-Burt)

E

1.60

-

100

125

150

162

168

-

-

Stock

Super Ford - March 1991

TFS Street Heat (Will-Burt)

I

2.02

72

138

181

207

220

230

-

-

Stock

MM&FF - Feb. 1998

TFS Street Heat (Will-Burt)

E

1.60

48

78

100

125

135

140

-

-

Stock

MM&FF - Feb. 1998

TFS Street Heat (Will-Burt)

I

2.02

60

125

185

220

260

275

-

-

Stage 3 (Hand Ported)

MM&FF - Feb. 1998

TFS Street Heat (Will-Burt)

E

1.60

54

80

105

130

160

180

-

-

Stage 3 (Hand Ported)

MM&FF - Feb. 1998

TFS Street Heat (Will-Burt)

I

2.02

60

125

188

230

268

280

-

-

Stage 3 (Extrude honed)

MM&FF - Feb. 1998

TFS Street Heat (Will-Burt)

E

1.60

57

100

140

175

185

190

-

-

Stage 3 (Extrude honed)

MM&FF - Feb. 1998

TFS Twisted Wedge

I

2.02

63

141

205

233

251

251

-

-

Stock

MM&FF - Aug. 1997

TFS Twisted Wedge

E

1.60

53

107

144

171

187

193

-

-

Stock

MM&FF - Aug. 1997

TFS Twisted Wedge

I

2.02

67.8

132.7

199.1

240.4

252.5

243.3

-

-

Stock

Super Ford - Jan. 1999

TFS Twisted Wedge

E

1.60

56.2

106.1

141.9

173.1

191.9

201.2

-

-

Stock

Super Ford - Jan. 1999

TFS Twisted Wedge

I

2.02

61

125

187

226

241

-

-

-

Stock - FPS (undercut stems)

The Corral Website

TFS Twisted Wedge

E

1.60

58

104

139

166

187

-

-

-

Stock (undercut stems)

The Corral Website

TFS Twisted Wedge

I

2.02

-

-

-

233

254

254

-

-

Stock - DSA (undercut stems)

The Corral Website

TFS Twisted Wedge

I

2.02

74

130

188

231

254

256

-

-

Stage 1

Super Ford - May 1999

TFS Twisted Wedge

E

1.60

58

125

156

182

198

212

-

-

Stage 1

Super Ford - May 1999

TFS Twisted Wedge

I

2.02

74

142

198

243

263

264

260

-

Stage 2

Super Ford - May 1999

TFS Twisted Wedge

E

1.60

58

126

160

188

209

220

225

-

Stage 2

Super Ford - May 1999

TFS Twisted Wedge

I

2.02

-

130

182

248

271

288

288

-

Stage 3

The Corral Website

TFS Twisted Wedge

E

1.60

-

115

134

160

193

210

-

-

Stage 3

The Corral Website

TFS Twisted Wedge

I

2.05

75

146

203

249

276

289

300

-

Stage 3

Super Ford - May 1999

TFS Twisted Wedge

E

1.625

57

126

166

196

216

228

240

-

Stage 3

Super Ford - May 1999

Air Flow Research 165cc

I

1.90

-

123

186

225

250

250

-

-

Stock

AFR Catalog - 1998

Air Flow Research 165cc

E

1.60

-

118

153

178

185

191

-

-

Stock

AFR Catalog - 1998

Air Flow Research 185cc

I

2.02

-

129

189

224

267

282

-

-

Stock

AFR Catalog - 1998

Air Flow Research 185cc

E

1.60

-

118

153

178

185

191

-

-

Stock

AFR Catalog - 1998

Avenger

I

2.02

70.3

140.2

194.5

226.4

253.4

265.1

268

271

Stock

FPS Catalog - 1999

Avenger

E

1.60

63.4

103.4

139.7

164.2

185.9

193

196.5

205.4

Stock

FPS Catalog - 1999

Avenger

I

2.02

70

150

204

242

262

272

275

-

Stock

MM&FF - Jan. 1998

Avenger

E

1.60

54

102

132

171

190

201

204

-

Stock

MM&FF - Jan. 1998

Brondix Track 1

I

2.02

67

127

173

216

243

253

-

-

Stage 1

Super Ford - May 1999

Brondix Track 1

E

1.60

67

111

145

170

190

200

-

-

Stage 1

Super Ford - May 1999

Brondix Track 1

I

2.08

73

125

177

229

267

284

298

-

Stage 2

Super Ford - May 1999

Brondix Track 1

E

1.60

69

118

151

179

201

217

229

-

Stage 2

Super Ford - May 1999

Brondix Track 1

I

2.08

73

143

200

249

284

308

317

-

Stage 3

Super Ford - May 1999

Brondix Track 1

E

1.625

64

121

169

200

222

235

252

-

Stage 3

Super Ford - May 1999

Brondix Track 1

I

-

-

136

194

247

287

312

315

-

CNC ported

M2race Systems

Brondix Track 1

E

-

-

115

156

198

214

220

225

-

CNC ported

M2race Systems

Edelbrock Performer 5.0

I

1.90

72

131

185

214

223

226

-

-

Stock

Edelbrock

Edelbrock Performer 5.0

E

1.60

57

105

131

156

168

175

-

-

Stock

Edelbrock

Edelbrock Performer

I

2.02

70

128

183

219

229

226

-

-

Stock

Edelbrock

Edelbrock Performer

E

1.60

57

104

142

163

172

174

-

-

Stock

Edelbrock

Edelbrock Performer

I

2.02

66

137

229

268

288

-

-

-

Ported

MV Performance

Edelbrock Performer

E

1.60

58

110

155

186

209

222

-

-

Ported

MV Performance

Edelbrock Victor Jr.

I

2.05

63.8

127.3

177.0

229.2

268.8

288.0

-

-

Stock

Mustang & Fords - Dec. 1999

Edelbrock Victor Jr.

E

1.60

54.1

106.8

151.6

181.5

205.0

217.5

-

-

Stock

Mustang & Fords - Dec. 1999

Edelbrock Victor Jr.

I

2.05

64

127

186

234

268

291

285

-

Stock

Edelbrock

Edelbrock Victor Jr.

E

1.60

54

108

140

167

189

195

199

-

Stock

Edelbrock

Edelbrock Victor Jr.

I

2.05

68

120

165

220

262

273

-

-

Stage 1

Super Ford - May 1999

Edelbrock Victor Jr.

E

1.60

67

115

148

174

200

208

-

-

Stage 1

Super Ford - May 1999

Edelbrock Victor Jr.

I

2.05

72

131

190

240

278

297

290

-

Stage 2

Super Ford - May 1999

Edelbrock Victor Jr.

E

1.60

70

115

152

179

210

223

230

-

Stage 2

Super Ford - May 1999

Edelbrock Victor Jr.

I

2.08

75

135

202

245

285

302

315

-

Stage 3

Super Ford - May 1999

Edelbrock Victor Jr.

E

1.625

72

128

168

201

222

230

239

-

Stage 3

Super Ford - May 1999

Edelbrock 7721 Victor

I

2.13

64.3

135.5

198.2

248

289.2

310.4

307.4

-

Valve Job Only

MM&FF - Jan. 1998

Edelbrock 7721 Victor

E

1.63

59.7

107.5

152.7

184.2

199.8

209.3

209.3

-

Valve Job Only

MM&FF - Jan. 1998

Edelbrock 7721 Victor

I

2.13

69.2

141.1

210

261.2

300.5

324.4

337.9

-

Basic Port Job

MM&FF - Jan. 1998

Edelbrock 7721 Victor

E

1.63

60.1

115

160.2

192.8

217.8

232

240.2

-

Basic Port Job

MM&FF - Jan. 1998

Edelbrock 7721 Victor

I

2.13

76

141

203

256

298

323

339

-

Bowl blend, port match

Edelbrock

Edelbrock 7721 Victor

E

1.63

67

110

152

187

210

215

220

-

Stage 3

Edelbrock

TFS Twisted Wedge R

I

2.08

68

147

205

242

275

296

305

-

Stock

MM&FF - Aug. 1997

TFS Twisted Wedge R

E

1.60

50

102

146

178

200

212

222

-

Stock

MM&FF - Aug. 1997

TFS Twisted Wedge R

I

2.08

66.6

128.7

190.9

239.7

270.8

281.9

297.4

284.1

Stock

Super Ford - Jan. 1999

TFS Twisted Wedge R

E

1.60

53

109

152.8

184.1