Cracker, thank you for the kind words but at this point it is all "allegedly" as I have not proven the HP numbers on the new head. The models on the flow bench did pretty darn good, and typically the bench numbers translate to gains on the dyno......... "allegedly". Our casting company came through last time, Hopefully they come through again. That being said, last time we were grabbing apples on the bottom branches. We are not up to the top branch yet, but we're getting to the top steps of the ladder for a 4.724" bore spacing. I am anal, a little OCD and I like round numbers, so I have a personal goal of 400CFM@.800" out of our Cummins War Heads ( got the cam all ready to go with it). Part technical challenge, part vanity, part why the heck not. I sure hope we can pull that off or I will spend the next 10 years beating my head against a brick wall. 400 CFM heads with 80mm cam cores and 16mm+ P&B's or Unit injectors (that do not have lines that act like accumulators), and sub 6 second passes will be the norm, as will broken shafts
No worries Shainer I like free markets, free forums etc. link up whatever.
As for the the OP question, our new head is taller, a lot taller. It has the potential for identical ports if you trim the front gear housing. If not, #1 will be off 10% approximately relative to 2-6.
Our current head tops out north of 350CFM with larger bores and valves for comparison.
The new head will have larger ports that act lazy in low rpm situations. In days past we tried to make a head that would do well on the street and on the track and we kind of failed at both. This time I don't care what it does on street trucks. As such, I will not try to mass produce it and make it cheap as dirt like I did last time. We are doing small runs which means much higher per piece cost and each head sale will incur a greater part of tooling cost. It will feature a solid top that mimics what an SMT plate does. If you want modular shaft rockers, just drill and tap the top deck. I forgot to add that in research studies, it was found that the new head makes men 53% more attractive to women. Also noted in the study....... men that had the new head were 85% more lonely due to the fact that they were usually so far ahead of the competition, there was nobody to talk to.*
I hope to make it as affordable(cause you can't say cheap) as possible to the end users to help level the playing field on the track. After that I plan on changing my life's direction to focus on reductions in fuel usage, which would benefit more people in the world than allowing the farmer with the biggest pocket book to best his neighbor in the dirt.
proposed cost
$2600 retail
$2300 dealer
$2,000 WD
* total crock