a comment on the water pump housing,,,,, ive had obviously diferent looking cylinders in my super stock stuff due to heat or lack of,,, i started reducing the water port sizes and it started to equalize the way a piston looked,, chamber looked,, before you could point out the hot ones and the cold ones due to water flow,, im down to a .625 inlet into the block, and a .500 out of the head or vice versa if i reverse cool,,, didnt make it one degree hotter after the run