Paul,   I bought an F350 super duty Ford transfer case planetary last week
on e-Bay for $87.50 with free shipping. It is from a 4407 series and the
ratio is 2.72 to 1.   The sun gear and six pinion planetary weigh 10-1/4
pounds the ring gear 2 pounds and the input splined range adapter is 1/2
pound, total  12-3/4 pounds.  The planet orbit diameter is 4.99" and the
ring gear pitch diameter is     6.239" with an OD of 7.022"  The planet
gears are helical and have a width of 1.123" Torque capacity is much higher
than the E4OD since it sees the 2.85 torque multiplication of the
transmission.  As expected it shows no wear because it is only engaged when
the 4 wheel drive is in low lock. It doesn't look like any machine work
will
be necessary on these parts but if I use the stock mainshaft that will need
shortened. The range gear slider which inputs to the planetary has a large
fine tooth spline and there are some bearing seats on the shaft that make
it  usefull. I figure a hollow output propshaft over the output spindle of
the planetary carrier. The intended application is on a turbocharged
quadrotor which might get me out of my comfort zone with the E4OD output
shaft diameter. Possibly someone will start making  something with a
constant speed prop before I need it, if not this looks like a good choice
so far.

george grimes

Take some pictures George. Sounds good.

Paul Lamar

George & Paul,

Can you please clarify this a bit - I have some trouble to identify
which transmission you are referring to. F350 has been sold with:
4R100 4-speed
5R110 5-speed
6R150 6-speed
http://en.wikipedia.org/wiki/Ford_Super_Duty#Transmissions

4R100 and E4OD should share the same parts, right? So, that hefty
6-pinion should be from 5 or 6-speed tranny - but there seems to be no
2.72 ratio listed...

OR, is it just a part of F-series 4WD driveline, not a part of
transmission box itself ?!?

Cheers,
Petri

Yes it is a separate box that goes behind the regular transmission
for getting power to the front wheels. Mostly used off road.
It is only in the super low gear range at very low speeds for climbing
steep hills or pulling heavy loads like plows :)

Paul Lamar