[Jacques Reed]

Hi Graeme and Mike,

Thanks for your replies. Based on those same numbers, Ford single and two speed transfer cases used the same speedometer casings and shafts on the Cab 13's. Hanno's speedometer shaft would slot right into a F-60L casing.

Only the following are different:
Driving gear, C01Q-17285-A (4 teeth) Note: this is also listed as part 1809534 same as the F-60L part number. "A"?
Driven gear, C011WQ-17271 (15 teeth)

The key, sleeve, bushing, and spacer are the same part numbers as the single speed case.

Thank heaven I keep a box of "samples". Since posting the previous posts I found the ferule and remnant of the casing from what I believe was the two speed transfer case.
It measured 0.452" in diameter which would be nominally 7/16"
This does not prove anything, however, as the transfer case was installed in the modified F-15A chassis so the casing could have come from anywhere. Different supplier or even a Chevy perhaps? Bush engineers grab whatever is laying around.
I am fairly certain the transfer case had Ford markings on it but it is long gone to check.

Cheers,