360 J head 2.02

There is no down side on a 360. Some say there's a downside on 340s..but I dont call the 2.02s a problem. What it does on any set of heads, is increase the available area for flow from the closed (" on the seat") valve position thru the mid lift range (.250"). It also moves the 45° seat cut outward and up, effectively unshrouding the valve in the chamber and removing any traces of "sinking" from wear. The 8% longer stroke will love it.