Originally Posted By jcc
Not sure what to make of this thread. Is the art of porting mainly based on some individual personal theories, with a prodigious amount of try and error on a flow bench? What happens when flow changes go down instead of up? If the art is slowly dying off, because of time and CNC, seems like the time for a well researched jointly written book, with chapters by each of the prominent willing head porters. Seems like the book would be able to be well priced if the secrets are shared by those in the twilight of their profession. The attraction to me would be reading all the different views, one, not so much. twocents


I can tell you there is more to head work than flow numbers. The shape of the curve, how the head responds to pressure changes, how the port does in direction changes......just to name a few.

I have done heads that flowed LESS when I was done that went faster. The port had issues. But because the original head guy was into big flow numbers he missed an important detail.

I also love to kill "low" lift flow. If you think about it for a bit it will make sense.

I'd write a book, but would you pay to read it??????????????

Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston