Dart 230's from LME
#21
Thats why I thought the Dart 230's were alittle big. Port Velocity is very important, as well as flow on a solid roller 396. The AFR's are quite a bit smaller but flow almost the same across the board....that mean the AFR's have a higher port velocity. Also, I think Dart heads are good...but from what I have seen the AFR's and Trick Flow 210-215's flow noticably better than the Dart 215's. I believe the same thing would happen with the larger runner ones as well.