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            

Canfield SBC 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                        COMPARING 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
 

 

 
 
 

 

 

 Testing of SBF Heads

 

 AFR Heads Dyno Tests Ford                                         Ford 351C Heads

AFR Small Block Ford                                             Proving the AFR 165cc Ford Heads

FORD CNC 300 HEADS

TRICKFLOW SBF                               TRICKFLOW BBF         

Canfield SBF Heads                               Edelbrock SBF & BBF

 CLEVELAND CYLINDER HEADS

 

GM Heads

More GM Heads

LT1 Background Info

LT1 Reverse Flow Cooling System

Technical Articial

Big Block Heads Flow Test

  Porting Article