I was just thinking, on engines that use a valley pan, and therefore the intake is not important for that seal, wouldn't it be a good idea for aftermarket intakes to be cast in a way that provides an air gap between the coolant passage, and the front runners?  It looks like it would be a reasonably easy thing to do with a Y intake and it would help to keep the intake runner temperature more consistent front to back.  The most significant clearance issue would be the stock oil filler and I realize that it probably would not be possible to keep it entirely separated from the front runners with a one piece design.


Lawrenceville, GA