Here are some more threads of info for you.
  The tooth count for the dodge is 62 on ring 28 on the sun and 17 on
the planets.
  Comparing the C-6 gears that are used in the 2.17 and 3.17 ratio to
the Dodge 3.21 ratio the Dodge gears have much bigger teeth, the sun
gears are the same outside diameter but the C-6 has teeth and the Dodge
has 28 teeth, this is due to the larger teeth on the Dodge.
  Also the ring gears have the same inside diameter but the C-6 has 74
teeth and the dodge has 62 teeth due to the larger teeth on the Dodge.
  The surface speed remains about the same but the teeth are bigger,
sounds stronger to me.
  I have built off road race car transmissions for years and although
manual not stick and always the gears with bigger teeth were always
stronger.
  Another thing that I noticed when I was looking at gears at the tranny
shop is that the C-6 set that gives 2.85 ratio has a bigger sun gear and
the planet gears were real small do to the larger sun gear so that would
raise the planet gear rpm.
  Here is a shot of both gears side by side, its clear to see the
difference.
  Ken Welter

Why do these gears have plain bearings? The Ford has needle bearings.
Paul Lamar

Well, it has only been about 45 years since I worked on these things
regularly; but, then, the reason (so we were told) they used bushings was
most planetaries were expected to lock up and simply turn as a unit once in
highest gear that unit produced. It was that they were cheaper more than
likely.
jofarr, soddy tn


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