Cylinder Head Flow Data At 28 H2O - Engine Builder Professional

Cylinder Head Flow Data At 28" H2O

Chevy

Port/Vol Valve Size Combust. .100" .200" .300" .400" .500" .600" .700" .800" .900" 1.000" Average

Manufacturer /Part Number Intake / Intake / Chamber Intake / Intake / Intake / Intake / Intake / Intake / Intake / Intake / Intake / Intake / Intake /

Exhaust Exhaust Volume Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust

221/138

Chevy Bow Tie

178/-

-

N/A

-

-

-

-

62.44%

-

454.6 hp

-

493.3

-

-

N/A

-

N/A

1.242

hp

250/174

Chevy Bow Tie #2

N/A

-

N/A

-

-

-

-

69.60% 514.3

-

-

-

-

-

-

hp

210/127

Chevy Bow Tie Phase II CCM

184/55

-

205/123 225/123 60.48% 209/127

64

63/57 130/100 177/119 60.00% 54.67% 432.0 60.77% 90.48% 76.92% 67.23% 421.7 462.9 hp 466.5

-

hp hp 468.7 hp

-

174.1/110.9 - 63.66%

1.223/2.309

hp

188/140

Chevy '186 Fuelie

161/65

-

182/125 187/135 74.47%

64

60/38 113/76 159/110 68.68% 72.19% 386.7 63.33% 67.26% 69.18% 374.4 384.7 hp

-

hp hp 419.6

-

-

148.2/104.0 - 70.19%

1.168/2.154

hp

203/139

Chevy '441 CHP

1.940/1.500

155/62

-

No Pipe

76

194/127 201/136 68.47% 55/45 110/80 160/112 65.46% 67.66% 417.6 81.82% 72.73% 70.00% 399.1 413.5 hp

hp hp 453.1

-

-

-

153.8/106.5 - 69.23%

1.310/2.242

hp

203/148

Chevy '441 CHP

1.940/1.500

155/62

-

Pipe

76

194/133 201/146 72.91% 55/45 110/83 160/118 68.56% 72.64% 417.6 81.82% 75.45% 73.75% 399.1 413.5 hp

hp hp 453.1

-

-

-

153.8/112.2 - 72.91%

1.310/2.387

hp

Chevy '461

161/62 2.020/1.600 64

-

-

-

216/137

-

63.43% 444.3

-

hp

-

-

-

N/A

-

N/A

1.342/2.210

232/172

210/147 224/162 74.14% 238/180

Chevy '461 Ported

N/A

2.020/1.600 4.060

N/A

94/65 152/102 183/126 70.00% 72.32% 477.3 75.63% 69.15% 67.11% 68.85% 432.0 460.8 hp 531.2

-

-

-

190.4/136.3 71.57%

hp hp 517.8 hp

hp

Chevy '461X

172/62

-

64

-

-

-

-

-

-

-

-

-

-

-

218/142

Chevy '462

156/65 1.940/1.500 62

198/134 216/139 65.14%

-

119/91 167/119 67.68% 64.35% 448.5 76.47% 71.26% 407.3 444.3 hp

-

hp hp 486.6

-

-

183.6/125.0 - 68.08%

1.397/2.185

hp

218/137

Chevy '462 CCM

1.940/1.500

156/65

-

No Pipe

62

198/128 212/134 62.84% 50/54 119/88 167/116 64.65% 63.21% 448.5 108.0% 73.95% 69.46% 407.3 436.1 hp

hp hp 486.6

-

-

-

160.7/109.5 - 68.15%

1.397/2.108

hp

218/142

Chevy '462 CCM

1.940/1.500

156/65

-

Pipe

62

198/134 212/139 65.14% 50/54 119/91 167/121 67.68% 65.57% 448.5 108.0% 76.47% 72.46% 407.3 436.1 hp

hp hp 486.6

-

-

-

160.7/113.5 - 70.64%

1.397/2.185

hp

209/141

Chevy '492

159/62

-

64

-

-

198/137 206/141 67.46%

-

69.19% 68.45% 429.9 407.3 423.8 hp

-

hp hp 466.5

-

-

204.3/139.7 - 68.35%

1.314/2.274

hp

206/142

Chevy '882 CCM

1.940/1.500

151/59

-

No Pipe

76

204/141 205/142 68.93% 70/58 125/108 175/135 69.12% 69.27% 423.8 82.86% 86.40% 77.14% 419.7 421.7 hp

hp hp 459.8

-

-

-

164.2/121.0 - 73.71%

1.364/2.407

hp

206/145

Chevy '882 CCM

1.940/1.500

151/59

-

Pipe

76

204/143 205/144 70.39% 70/59 125/109 175/136 70.10% 70.24% 423.8 84.29% 87.20% 77.71% 419.7 421.7 hp

hp hp 459.8

-

-

-

164.2/122.7 - 74.72%

1.364/2.458

hp

165/119

Chevy LB4 Syclone

N/A

-

N/A

-

-

-

-

72.12% 339.4

-

-

-

-

-

-

hp

GM LS-1

204/- 2.000/1.550 65

219/172 231/193

-

123/108 180/147 78.54% 83.55% 87.80% 81.67% 450.5 475.2

-

hp hp

-

-

-

188.3/155.0 - 82.34%

1.132

252/185

GM LS-1 CHP

2.000/1.550

204/-

-

Pipe

65

222/165 240/179 73.41% 83/62 134/104 189/136 74.32% 74.58% 518.4 74.70% 77.61% 71.96% 456.7 493.7 hp

hp hp 562.4

-

-

-

186.7/138.5 - 74.20%

1.235

hp

292/231

GM LS-1 Ported AP Engineering

252/195 285/221 79.11% 301/237

235/-

2.020/1.575 3.970

N/A

73/54 150/111 207/155 77.38% 77.54% 600.7 78.74% 73.97% 74.00% 74.88% 518.4 586.3 hp 671.8

-

hp hp 651.7 hp

-

222.9/172.0 - 77.18%

1.281

hp

236/185

78.39%

Chevy LS6

N/A

-

N/A

-

-

-

-

-

485.5 hp

-

-

-

-

-

526.7

hp

Chevy LT-1

170/62

-

58

-

-

187/139 190/145

-

74.33% 76.32% 384.7 390.9

-

hp hp

-

-

-

188.5/142.0 - 75.33%

1.118/2.339

215/154

Chevy LT-1 #372 Alum CHP

1.940/1.500

170/62

-

No Pipe

58

213/142 214/149 71.63% 72/52 129/100 180/130 66.67% 69.63% 442.3 72.22% 77.52% 72.22% 438.2 440.2 hp

hp hp 479.9

-

-

-

170.5/121.2 - 71.07%

1.265/2.484

hp

215/171

Chevy LT-1 #372 Alum CHP

1.940/1.500

170/62

-

Pipe

58

213/155 214/165 79.53% 72/53 129/101 180/136 72.77% 77.10% 442.3 73.61% 78.29% 75.56% 438.2 440.2 hp

hp hp 479.9

-

-

-

170.5/130.2 - 76.34%

1.265/2.758

hp

257/196

Chevy LT-4

195/- 2.000/1.550 56

243/177 265/190 76.26%

-

156/121 208/149 72.84% 71.70% 528.7 77.56% 71.63% 499.9 545.1 hp

-

hp hp 573.6

-

-

225.8/166.6 - 73.78%

1.359

hp

243/177

Chevy LT-4 Alum CHP

2.000/1.550

195/-

-

No Pipe

56

230/159 250/172 72.84% 78/67 147/109 197/133 69.13% 68.80% 499.9 85.90% 74.15% 67.51% 473.1 514.3 hp

hp hp 542.4

-

-

-

190.8/136.2 - 71.35%

1.282

hp

243/185

Chevy LT-4 Alum CHP

2.000/1.550

195/-

-

Pipe

56

230/167 250/180 76.13% 78/67 147/114 197/141 72.61% 72.00% 499.9 85.90% 77.55% 71.57% 473.1 514.3 hp

hp hp 542.4

-

-

-

190.8/142.3 - 74.59%

1.282

hp

199/167

Chevy L98

163/- 1.940/1.500 58

-

189/148 199/164 83.92%

-

163/129 78.31% 82.41% 409.4 79.14% 388.8 409.4 hp

-

hp hp 444.2

-

-

187.5/152.0 - 81.07%

1.221

hp

201/177

88.06%

Chevy Turbo

N/A

-

N/A

-

-

-

-

-

413.5 hp

-

-

-

-

-

448.6

hp

242/142

198/133 226/140 58.68%

Chevy Vortec L29

N/A

-

N/A

63/49 121/91 165/120 67.17% 61.95% 497.8 77.78% 75.21% 72.73% 407.3 464.9 hp

-

-

-

-

169.2/112.5 66.50%

hp hp 540.1

hp

222/152

Chevy Vortec L31

216/143 225/149 68.47%

171/61 1.940/1.500

64

58/43 114/88 173/125 66.20% 66.22% 456.7 74.14% 77.19% 72.25% 444.3 462.9 hp

-

hp hp 495.5

-

-

168.0/116.7 - 69.44%

1.316/2.492

hp

229/151

Chevy Vortec L31 / #885CCM

170/61 - 1.940/1.500

No Pipe

64

227/140 239/147 65.94% 70/48 138/101 190/129 61.67% 61.51% 471.1 68.57% 73.19% 67.89% 467.0 491.7 hp

hp hp 511.1

-

-

-

182.2/119.3 - 65.51%

1.406/2.475

hp

229/162

Chevy Vortec L31 / #885CCM

227/151 239/160 70.74%

170/61 1.940/1.500

64

70/49 139/105 190/137 66.52% 66.95% 471.1 70.00% 75.54% 72.11% 467.0 491.7 hp

-

hp hp 511.1

-

-

182.3/127.3 - 69.84%

1.406/2.656

hp

266/200

Chevy Vortec Ported McCoy

N/A

-

N/A

-

-

-

-

75.19% 547.2

-

-

-

-

-

-

hp

229/162

Chevy Vortec 885

1.940/1.500

170/-

-

Pipe

64

227/151 239/160 70.74% 70/49 139/105 190/137 66.52% 66.95% 471.1 70.00% 75.54% 72.11% 467.0 491.7 hp

hp hp 511.1

-

-

-

182.3/127.3 - 69.84%

1.406

hp

260/194

AFR LT-1 180 Street

180/64 2.020/1.600 56-74

240/178 255/190 74.62%

-

129/108 195/156 74.17% 74.51% 534.9 83.72% 80.00% 493.7 524.6 hp

-

hp hp 580.3

-

-

215.8/165.2 - 76.55%

1.444/3.031

hp

262/194

AFR LT-1 190 Street

190/64 2.020/- 56-74

240/178 260/190 74.05%

-

129/108 195/156 74.17% 73.08% 539.0 83.72% 80.00% 493.7 534.9 hp

-

hp hp 584.8

-

-

217.2/165.2 - 76.06%

1.379/3.031

hp

262/194

AFR LT-4 195 Street

195/64 2.020/1.600 56-74

240/178 260/190 74.05%

-

132/108 198/156 74.17% 73.08% 539.0 81.82% 78.79% 493.7 534.9 hp

-

hp hp 584.8

-

-

218.4/165.2 - 75.64%

1.344/3.031

hp

282/215

245/185 273/205 76.24% 285/220

236.2/180.3

AFR LT-4 210 Race AFR LT-4 220 Race AFR LT-4 227 Race AFR LS1 AFR 180 Street AFR 180 Comp AFR 190 Street AFR 190 Comp AFR 195 Street AFR 195 Comp AFR 210 Race AFR 220 Race

210/80 2.080/1.600 76

- 82.96% 73.60% 504.0 561.6 hp 636.1 hp hp 629.4 hp

-

- 76.36% 1.357/2.750

hp

286/215

220/80 2.080/1.600 76

248/185 280/205 75.17% 292/220

-

132/112 190/145 74.60% 73.21% 588.3 75.34% 84.85% 76.32% 510.2 576.0 hp 651.7

-

hp hp 638.3 hp

-

238.0/180.3 - 75.77%

1.327/2.750

hp

292/215

227/80 2.100/1.600 N/A

250/185 288/205 73.63% 295/220

-

135/112 192/145 74.00% 71.18% 600.7 74.58% 82.96% 75.52% 514.3 592.5 hp 658.4

-

hp hp 651.7 hp

-

242.0/180.3 - 74.52%

1.300/2.750

hp

292/226

205/- 2.020/1.600 66/76

251/203 281/221 77.40% 301/230

-

140/112 200/170 80.88% 78.65% 600.7 76.41% 80.00% 85.00% 516.3 578.1 hp 671.8

-

hp hp 651.7 hp

-

244.2/193.7 - 79.32%

1.468

hp

260/194

180/- 2.020/1.600 68-74

240/178 255/190 74.62%

-

129/108 195/156 74.17% 74.51% 534.9 83.72% 80.00% 493.7 524.6 hp

-

hp hp 580.3

-

-

215.8/165.2 - 76.55%

1.444

hp

268/211

245/190 260/204 78.73%

N/A 2.020/1.600 74

-

144/102 206/152 77.55% 78.46% 551.3 70.83% 73.79% 504.0 534.9 hp

-

-

-

-

224.6/171.8 76.49%

hp hp 598.2

hp

262/194

190/-

-

68-74

240/178 260/190 74.05%

-

129/108 195/156 74.17% 73.08% 539.0 83.72% 80.00% 493.7 534.9 hp

-

hp hp 584.8

-

-

217.2/165.2 - 76.06%

1.379

hp

276/208

243/180 264/195 75.36%

N/A

-

74

-

135/110 201/157 74.07% 73.86% 567.8 81.48% 78.11% 499.9 543.1 hp

-

-

-

-

223.8/170.0 75.96%

hp hp 616.0

hp

262/194

195/- 2.020/1.600 68-74

240/178 260/190 74.05%

-

132/108 198/156 74.17% 73.08% 539.0 81.82% 78.79% 493.7 534.9 hp

-

hp hp 584.8

-

-

218.4/165.2 - 75.64%

1.344

hp

280/208

249/180 275/195 74.29%

N/A 2.020/1.600 74

-

135/110 201/157 72.29% 70.91% 576.0 81.48% 78.11% 512.2 565.7 hp

-

-

-

-

228.0/170.0 74.56%

hp hp 624.9

hp

282/215

210/80 2.080/1.600 76

245/185 273/205 76.24% 285/220

-

135/112 197/145 75.51% 75.09% 580.1 77.19% 82.96% 73.60% 504.0 561.6 hp 636.1

-

hp hp 629.4 hp

-

236.2/180.3 - 76.36%

1.357/2.750

hp

286/215

220/80 2.080/1.600 76

248/185 280/205 75.17% 292/220

-

132/112 190/145 74.60% 73.21% 588.3 75.34% 84.85% 76.32% 510.2 576.0 hp 651.7

-

hp hp 638.3 hp

-

238.0/180.3 - 75.77%

1.327/2.750

hp

292/215

250/185 288/205 73.63% 295/220

242.0/180.3

AFR 227 Race

227/80 2.100/1.600 N/A

- 82.96% 75.52% 514.3 592.5 hp 658.4 hp hp 651.7 hp

-

- 74.52% 1.300/2.750

hp

329/246

AFR 18 Degree GM

243/100 -

65

273/204 319/230 74.77% 340/255

-

147/109 219/160 74.73% 72.10% 676.8 75.00% 74.15% 73.06% 561.6 656.2 hp 758.9

-

hp hp 734.3 hp

-

271.2/200.7 - 74.00%

1.399/2.550

hp

315/220

AFR 23 Degree 215

215/80

-

76

276/190 308/207 69.84% 325/230

-

150/112 220/150 68.84% 67.21% 648.0 70.77% 74.67% 68.18% 567.8 633.6 hp 725.4

-

hp hp 703.1 hp

-

265.7/184.8 - 69.57%

1.512/2.875

hp

212/180

Brodix CARB Legal Al

170/- 2.020/1.600 67

217/159 215/174 84.91%

-

132/93 185/134 73.27% 80.93% 436.1 70.45% 72.43% 446.4 442.3 hp

-

hp hp 473.2

-

-

192.2/148.0 - 77.00%

1.276

hp

Brodix -8 STD FSH CARB Legal Al

185/- 2.080/1.600

67

229/152 233/159

-

134/106 191/135 66.38% 68.24% 79.10% 70.68% 471.1 479.3

-

hp hp

-

-

-

196.8/138.0 - 70.14%

1.259

Brodix -8 STD or SP

194/- 2.080/1.600 67

230/155 240/161

-

134/109 191/138 67.39% 67.08% 81.34% 72.25% 473.1 493.7

-

hp hp

-

-

-

198.8/140.8 - 70.82%

1.237

261/166

Brodix -10 STD or SP

210/- 2.080/1.600 67

239/155 253/161 63.60% 261/167

-

145/109 194/138 64.85% 63.64% 536.9 63.98% 75.17% 71.13% 491.7 520.5 hp 582.5

-

hp hp 582.5 hp

-

225.5/149.3 - 66.22%

1.243

hp

256/166

Brodix -11 STD or SP

221/- 2.080/1.600 67

232/155 260/161 64.84% 258/167

-

132/109 188/138 66.81% 61.92% 526.6 64.73% 82.58% 73.40% 477.3 534.9 hp 575.8

-

hp hp 571.4 hp

-

221.0/149.3 - 67.57%

1.176

hp

Brodix -8 PRO

185/- 2.020/1.600 67

230/153 240/160

-

134/106 191/135 66.52% 66.67% 79.10% 70.68% 473.1 493.7

-

hp hp

-

-

-

198.8/138.5 - 69.69%

1.297

269/207

Brodix Track I

215/-

-

69

229/179 268/193 76.95%

-

128/111 183/149 78.17% 72.01% 553.4 86.72% 81.42% 471.1 551.3 hp

-

hp hp 600.4

-

-

215.4/167.8 - 77.90%

1.251

hp

259/200

Canfield 23-500-65

247/175 258/190 77.22% 259/203

195/- 2.055/1.600

65

72/53 145/107 201/143 70.85% 73.64% 532.8 78.38% 73.61% 73.79% 71.14% 508.1 530.7 hp 578.1

-

hp hp 578.1 hp

-

205.9/153.0 - 74.32%

1.328

hp

302/219

Canfield 23-600-65

252/184 288/203 72.52% 306/227

220/- 2.080/1.600

65

72/52 145/105 206/146 73.02% 70.49% 621.3 74.18% 72.22% 72.41% 70.87% 518.4 592.5 hp 683.0

-

hp hp 674.0 hp

-

224.4/162.3 - 72.31%

1.391

hp

218/174

Dart 180 Iron Eagle

2.020/1.600

180/- 4.030

65.9

No Pipe

218/164 222/172 79.82%

-

139/114 190/145 75.23% 77.48% 448.5 82.01% 76.32% 448.5 456.7 hp

-

hp hp 486.6

-

-

197.4/153.8 - 77.91%

1.233

hp

252/174

2.020/1.600

229/164 261/172 69.05%

211.4/153.8

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