My input and output shafts have 850+ passes. Though all are footbrake. I've broken 3 Dana pinion gears. Dizusters turbo car also ran stock shafts. Its broken rear axle pinion shafts, aftermarket steel drive shafts. But never either trans shaft, Both were over 850 hp. His weighed 3750, mine 3350. Both are 65 push button. Both have stripped stock front planet carriers. Both run stock pump gears.
Doug
I broke the "ears" off one set of stock 727 pump gears also. It happened during the Mopar weekend about 2008, during time trials.
With the help of a couple racers, we pulled the trans, took it apart, found some new pump gears at a vendor; and I made the first round of eliminations.
