i dont see many heads doing better without the roof kink taken out, also the bowl is perfectly round and mirror finished and the short turn isnt laid back at all really besides a hair of straightening near the straight wall portion.
were these heads originally 1.88 versions?
that would explain it right there, another thing people need to know is starting out as 1.88 heads there is way more work than one would think to get them just to 230cfm just cutting to 2.02. this is a good example why all the rag mags report such **** numbers...cause they start out as 1.88 and just cut the 2.02 and only blend or round the transition to the throat, if mags would flow factory 2.02 x or j heads, the numbers floating around as hear say would be 228-230 STOCK and not 190's 0r 205