Ok.....some of you I have called but I would like other input also. Last sunday at wide open throttle, 65-6600, the motor blows water from between the head and the block. There is NO water in the motor. It will not do it sitting still at that rpm. It will do it underway. Now it never did this before I went to the alum heads, bigger pistons, cam etc.... I also changed the gears from 12% to 19%. Obviously speed is the issue. Here is a diagram of how it is plumbed. This is also the smaller neovane pump.
http://www.v-drivevideo.com/mike/plumbing.JPG
Transom side.............................................. .....engine side