This Information Is Provided to Give You Some idea Of The Power

 To Be Had From These Size Engines.

 

 

 

Dyno Tested Street Packages

Featuring AFR Street Heads, AFR Hydraulic Cams, and AFR Manifolds

  • Efficient Cyclinder Heads + Small Camshaft = Gigantic Torque, Monster Horsepower and Great Street Ability.

  • Compare our Low RPM Torque to the Competition.

  • Don't be fooled by the other packages that require Camshafts 15° to 20° larger at .050 to get near our peak Horsepower

383 cid Small Block Chevy Package

AFR 190cc Street Heads
9.5 to 1 Compression
1 3/4” Headers
AFR FloPower RPM #5029 0-4779 750 cfm Holley Carb
Comp Cams Hyd Roller Cam #12-433-8
MSD Distributor 36° Timing
93° Octane Pump Gas

350 cid Small Block Chevy Package

AFR 180cc Street Heads
9 to 1 Compression
1 5/8” Headers
AFR FloPower RPM #5029 600 cfm Holley Carb
110E Hyd Flat Cam
Intake: .460 lift/218º @ .050, Exhaust: .470 lift/223º @ .050
110 lobe center, 800 RPM idle, 16 lbs. of vacuum

 

 

355ci Chevy Dyno Packages Power at Flywheel

RPM

Torque

H.P.

2500
3000
3500
4000
4500
5000
5500
6000

394
411
434
469
470
446
410
356
189
234
288
356
403
424
430
407

 
 

Dyno Test Criteria

Horsepower:
Engine:
Heads:
Compression:
Carburetor:
Ignition:
Cam:
Exhaust:
Fuel:
Manifold
430 HP
355ci
AFR Street 190 Heads
9.5
Holley 0-80779 750 cfm
MSD Distributor 34° Timing
Comp Cams 270 Magnum Hyd. Cam 224 @ .050 Dur  .470 Lift
1 5/8" Headers
93 Octane Pump Gas
AFR #5029
Engine built and dyno tested by AFR

RPM

Torque

H.P.

2500
3000
3500
4000
4500
5000
5500
6000
409
419
441
467
470
448
428
375
204
239
298
357
405
424
450
429

 
 

Dyno Test Criteria

Horsepower:
Engine:
Heads:
Compression:
Carburetor:
Ignition:
Cam:
Exhaust:
Fuel:
450 HP
355cid
AFR Street 190 Heads
9.5
Holley 0-4779 750 cfm
MSD Distributor 36° Timing
Comp Cams XR284HR Hyd Roller 230.236 @.050 Dur .502/.520 Lift
1 5/8" Headers
93 Octane Pump Gas

AFR #5029

Street Power Flow Manifold

 

383ci Chevy Dyno Packages Power at Flywheel

RPM

Torque

H.P.

2500
3000
3500
4000
4500
5000
5500
6000
432
450
475
513

515
488
449
390
207
257
316
390
441
464
471
446

   

Dyno Test Criteria

Horsepower:
Engine:
Heads:
Compression:
Carburetor:
Ignition:
Cam:
Exhaust:
Fuel:
460 HP
383cid

AFR Street 190 Aluminum Cyl. Heads
9.5
Holley 0-80779 750 cfm
MSD Distributor 34° Timing
Comp Cams 280 Magnum Hyd. Cam 230 @ .050 Dur .480 Lift
1 3/4" Headers
93 Octane Pump Gas

 

RPM

Torque

H.P.

2500
3000
3500
4000
4500
5000
5500
6000
448
459
483
501
501
488
469
411
223
262
326
381
429
464
491
470
  
 

Dyno Test Criteria

Horsepower:
Engine:
Heads:
Compression:
Carburetor:
Ignition:
Cam:
Exhaust:
Fuel:
480 HP
383cid

AFR Street 190 Aluminum Cyl. Heads
9.5
Holley 0-4779 750 cfm
MSD Distributor 36° Timing
Comp Cams XR284HR Hyd Roller 230.236 @.050 Dur .502/.520 Lift
1 3/4 Headers
93 Octane Pump Gas

 

RPM

Torque

H.P.

2500
3000
3500
4000
4500
5000
5500
6000
457
467
483
511
517
504
481
439
231
273
322
389
443
480
503
502
 
 

   
 

Dyno Test Criteria

Horsepower:
Engine:
Heads:
Compression:
Carburetor:
Ignition:
Cam:
Exhaust:
Fuel:
500 HP
383cid

AFR Street 190 Cyl. Heads
9.5
Holley 0-4779 750 cfm
MSD Distributor 36° Timing
Comp Cams XR288HR Hyd Roller Cam 236/242 @ .050 Dur .520/.540 Lift
1 3/4" Headers
93 Octane Pump Gas

Edelbrock RPM Performer Manifold

 

RPM

Torque

H.P.

2500
3000
3500
4000
4500
5000
5500
6000
439
454
487

520
518
503
480
443
226
262
330
396
444
479
503
506

 
 
 
    
 

Dyno Test Criteria

Horsepower:
Engine:
 
Heads:
 
Compression:
Carburetor:
Ignition:
Cam:
Exhaust:
Fuel:
 

500 HP 
383cid

AFR Street 190 CNC Competition Heads
9.4
BG Silver Claw 750 Carb. with 75/83 Jets
MSD 85551 Distributor 36° Timing
Comp Cams XR288HR Hyd Roller Cam 236/242 @ .050 Dur .520/.540 Lift
1 3/4" Headers
93 Octane Pump Gas

Edelbrock RPM Performer Manifold

 

RPM

Torque

H.P.

4000
4500
5000
5500
6000
6500
7000
550
559
570
592

611
587
520
500
510
560
610

692
630
540

    
 
  

Dyno Test Criteria

Horsepower:
Engine:
Heads:
Compression:
Carburetor:
Ignition:
Cam:

Exhaust:
Fuel:

690 HP
383cid Blown with 671 Weiand

AFR 195 Competition Package
7.8
2 Holley 650 Double Pumpers
MSD Billet Distributor 32° Timing
Xtreme Energy Hyd Roller Comp Cams
230°/236° .544-.555 lift 114 Lobe Center
1 3/4 Headers
93 Octane Pump Gas

 

 

413ci Chevy Dyno Packages Power at Flywheel

RPM

Torque

H.P.

4500
5000
5500
6000
6400
6600
6700
532
537
521
491
471
455
445

456
511
546
561

574
572
568

Dyno Test Criteria

Horsepower:
Engine:
Heads:
Compression:
Carburetor:
Ignition/Timing
Cam:
Exhaust:
Fuel:
Manifold:
574 HP
413cid

AFR 195cc Cyl. Heads
10.5 to 1
750 carburator
36° Timing
Custom Solid Roller
1 3/4 Header
92 Octane Pump Gas
Holley #300-25 Extended Runner

 

 

 
 
 

406ci Chevy Dyno Packages Power at Flywheel

RPM

Torque

H.P.

2500
3000
3500
4000
4500
5000
5500
6000
463
468
457
465
534

540
510
483
220
267
304
354
457
514
534
551
 
   
 

Dyno Test Criteria

Horsepower:
Engine:
Heads:
Compression:
Carburetor:
Ignition:
Cam:

Exhaust:
Fuel:
550 HP
406cid

AFR CNC Cyl. Heads 210cc Race Ready
10.3
750 Carb
MSD HEI Billet Distributor 36° Timing
Lunati Hyd. Roller Cams 232°/242°
0560-.570 lift W/ 1.6 Rockers
1 3/4" Headers
93 Octane Pump Gas

 

RPM

Torque

H.P.

4000
4500
5000
5500
6000
6500
7000
447
509
536
523
500
463
419
349
436
510
547
572

573
558


  
 

Dyno Test Criteria

Horsepower:
Engine:
Heads:
Compression:
Carburetor:
Ignition:
Cam:

Exhaust:
Fuel:
570 HP
406cid

AFR 210cc Competition Package
10.1
750 Carburator
MSD Distributor @ 36° Timing
Lunati Hyd. Roller Cams 242°-252°
.560-.572 lift 112 Lobe Centers
1 7/8" Hedman Headers
93 Octane Pump Gas

 

 

434ci Chevy Dyno Packages Power at Flywheel

RPM

Torque

H.P.

5000
5200
5400
5600
5800
6000
6200
6400
6600
6800
7000
752
766
776
778
786
780
781
776
766
759
751

716
758
798
830
868
891
922
946
963
983
1,001

Dyno Test Criteria

Horsepower:
Engine:
Heads:
Compression:
Cam:
Other Specs:
1,001 HP
434ci Blown ATI 0-2

AFR 210cc Cyl. Heads
10.1
Comp Cams Solid Roller
ATI Supercharger 14psi Peak Boost.

 

 
 
 
 
 

LT-1 Chevy Dyno Packages
Power to Rear Wheels

RPM

Torque

H.P.

2500
3000
3500
4000
4500
5000
5500
6000

367
384
420
453
478
447
371
279
174
219
280
345
410

425
389
307

Dyno Test Criteria

 

383 LT-1 AFR Street LT-1 Cyl. Heads,
Blower Cam, 9.0 Compression Ratio,
Procharger 4-5psi Boost.


 
 
 
   

RPM

Torque

H.P.

3000
3500
4000
4500
5000
5500
6000
393
403
441
452
476
463
393
247
268
336
388
453
484
442

Dyno Test Criteria

 
355 LT-1 AFR Street LT-1 Cyl. Heads
Steel Crank, Pink Rods, 8.4cr 12 psi
Vortech , 6 speed
.474/208° @.50 intake. .510/221° @.50 exhaust
112 Lobe Sep. ASM 1/ 3/4 Headers, 2.4lb.
injectors, Carol Super Fueler.

   
 

 

 

 



Distributor 

 AFR Small Block Chevy Heads                                  Trick Flow Small Block Chevy heads

AFR Heads Dyno Tests Chevy                                    HPC Magazine AFR Test 

Dart SBC Heads                             Dart Exotic Heads              New Dart Platinum Heads            

                        Brodix SBC Heads             GM Fast Burn Heads  

                                       LT1 Heads                       

Vortec Heads     Tech on Heads including Vortec

 
The new combustion chamber is markedly different than the old.

COMPARING SBC CYLINDER HEADS           

                   

 AFR Big Block Chevy Heads                                     Dart Big Block Chevy Heads

 Brodix BBC Chevy Heads                                         Edelbrock BBC Heads

 Canfield BBC Heads                       

 

LS1 AFR Mongoose Street Heads                              LS6 CNC300 HEADS

 

Intake CFM As-Cast CFM Ported Difference
Performer RPM Air-Gap 251 267 +16 CFM
Victor Jr. 247 276 +29 CFM
Super Victor 258 282 +24 CFM
 
Manifold Flow Chart
Intake RPM Air-Gap Victor Jr. Super Victor
  Cast Ported Cast Ported Cast Ported
Runner
1 214 288 241 295 300 345
2 224 308 243 302 293 351
3 221 312 241 286 276 341
4 208 282 243 301 271 357
5 218 304 250 305 277 352
6 213 288 230 287 277 341
7 210 286 246 300 290 355
8 220 306 235 299 295 346

 

 

Horsepower
  RPM Air-Gap Victor Jr. Super Victor
RPM Cast Ported Cast Ported Cast Ported
3,600 347 343 332 329 333 329
3,800 383 378 364 358 366 366
4,000 416 411 394 390 395 394
4,200 443 438 422 419 422 420
4,400 466 462 448 444 448 448
4,600 487 483 471 468 470 471
4,800 507 503 493 492 493 493
5,000 524 521 520 517 517 519
5,200 543 540 538 540 539 542
5,400 558 557 555 560 554 561
5,600 571 569 568 576 571 576
5,800 582 581 577 582 581 586
6,000 589 586 588 589 590 595
6,200 591 595 594 598 600 605
6,400 594 600 598 604 601 608
6,600 592 600 597 613 602 613
6,800 583 592 599 511 600 615
7,000 572 585 588 609 592 611
 

 

 

Several years ago, Muscle Mustangs and Fast Fords began extensive testing on the available heads
for the 5.0 Mustangs.  The articles began with the August 2003 issue and continued for quite a few
issues.  The following bench flow data was taken from these articles.  The data was all given at 28"
of water.  Included in these articles were how the heads performed on the dyno, valve sizes, spring
rates, compression ratios, combustion chamber sizes, and installation info.  The information in the
articles was extensive and worth purchasing a back copy if you really want to look into the
differences in the heads.  I've merely given a base sample of the testing figures as published.

 

Intake Lift

.100

.200

.300

.400

.500

.550

Stock E7tE

54

110

142

160

157

155

GT-40P

54

118

158

183

185

186

Edelbrock Performer

54

119

173

210

230

237

AFR 165

58

122

178

213

237

240

World Windsor Jr

53

109

153

184

203

211

Canfield

63

123

166

207

237

244

GT-40 Alum

50

101

150

188

206

212

Brodix ST-50

57

120

172

213

234

239

Holley 17*

62

120

168

211

237

237

Exhaust Lift

.100

.200

.300

.400

.500

.550

Stock E7tE

40

74

100

110

112

112

GT-40P

46

93

115

123

125

125

Edelbrock Performer

50

96

133

156

170

177

AFR 165

52

114

153

181

193

200

World Windsor Jr

38

84

117

143

158

162

Canfield

53

89

123

148

174

180

GT-40 Alum

48

98

127

141

146

147

Brodix ST-50

51

92

129

153

174

180

Holley 17*

47

85

121

148

165

172

 

 

Intake Lift

.100

.200

.300

.400

.500

.600

Ford GT-40X

57

110

162

193

215

230

Edelbrock Performer RPM

60

120

174

215

244

250

AFR 185

62

126

184

231

259

274

World Windsor Alum

61

115

156

196

219

232

Canfield 197

64

137

193

238

264

277

Ford Z304

66

143

192

239

270

267

Brodix M2 ST 5.0 R

63

131

190

235

260

277

Roush 200

58

119

169

212

235

242

TFS Twisted Wedge

68

135

192

234

248

245

Exhaust Lift

.100

.200

.300

.400

.500

.600

Ford GT-40X

49

89

123

150

155

155

Edelbrock Performer RPM

51

97

132

162

175

183

AFR 185

50

110

150

180

193

197

World Windsor Alum

47

80

115

134

146

150

Canfield 197

54

101

145

172

192

200

Ford Z304

55

107

156

186

200

210

Brodix M2 ST 5.0 R

52

106

132

173

202

216

Roush 200

52

91

123

139

153

159

TFS Twisted Wedge

51

89

122

146

168

179

 

 

Intake Lift

.100

.200

.300

.400

.500

.600

.700

Edelbrock Victor Jr

60

121

175

224

263

273

269

AFR 205

65

133

192

238

271

292

301

Dart Pro 1 CNC

59

122

181

233

272

295

300

Brodix Track 1 M2

64

133

190

240

275

295

301

TFS High Port

65

130

180

221

254

267

273

TFS Twisted Wedge R

64

132

186

232

274

274

304

Exhaust Lift

.100

.200

.300

.400

.500

.600

.700

Edelbrock Victor Jr

52

103

147

178

192

200

202

AFR 205

51

114

173

210

231

236

244

Dart Pro 1 CNC

49

106

154

191

211

218

221

Brodix Track 1 M2

55

107

145

183

212

226

236

TFS High Port

53

100

135

169

183

201

203

TFS Twisted Wedge R

58

94

140

176

203

218

227