With the latest competition 24 valve heads, the ports are moving air all the way up to .600+ valve lift. A lot of air flow has been left on the table with current cam designs. On forced induction ports, moving the valve out of the way yields even more flow, and cylinder fill.
I have been doing cam design for 20+ years on multiple engine programs. I love the challenge of this diesel program. We started with a horrible small port, and intrigue manifold head. The rocker ratio was terrible, and the cam core would not support the correct timing I knew what it wanted, and worked in that direction as far as possible. 5 years ago I scribbled down a design, which the math pointed to. The more I progressed in that direction. The better it ran, Rich Buckley was brave enough to let me get outside the box and we both went back and forth of his cam , he’s made a trip or two Bullet to pick up the latest of my renderings . The results are apparent
.. The new MaxSpool Pro series 54.5 and 60 mm Tool steel cams will deliver more air then any cam to date
These cams are huge, in airflow potential up to .525 lobe lift , intake lobe center lines any where you want them , and wide lobe separation angles
My 2.6 pulling cam is on a 122 intake love center line with a 125 lobe separation angle , and requires a little less than .030 valve relief , and this with .605 gross valve lift
The old cams that needed huge valve reliefs were just gas lobes on a diesel , with a tight LSA