12 is nowhere near enough initial to get that cam to idle cleanly. And I’m not familiar with that head but I’d bet a dollar the chamber in any trick flow is more efficient than the stock head it replaces, meaning it won’t want the total at 36. Also all in at 2500 with a lowish stall converter won’t make it rip your arms off. My WAG is 18-22 initial and all in around 31-34 with maybe a two spring curve. One medium and one heavy. But it is a WAG until you post some compression numbers.
