What it also shows is I need new baffles....Liquid air ones designed to lower cylinder 2, 4 and 6 CHTs especially so all the CHTs end up being very close to the rest rather than some 50F hotter. I also need to replace the 'shark gill' cheek plates with 'louvre' type to increase delta P. The later is actually part of the IO550B upgrade mod that the previous owners never bothered to do
io540 there is a third group...those flying carburetted engines
