727 Build for Mid-10s

usually vent leaks in water box as you are heating tires and fluid is thrown around like in a storm. relocate it to tail housing slightly behind mating surface of case to t/shaft. we broken more than one set of pump gears, usually on decel on top end. we broke several frt planetaries due to our own ignorance. try this some time. grab a planetary from your pile and put it on an output shaft to check for sideways movement. if no movement it is okay. if you find one that has a lot of sideways movement, you probably have one that has a different spline degree. what we did is we tore down lots of trannys for spare parts and did not realize the difference in output shaft pitch. you may also find one that will not fit the output shaft as it seams too small. just difference in spline degrees.