Transmission clutch push rod length (4 speed)
Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models
Common clutch push rod
The length of the clutch push rod used on 4 speed transmissions is (MG# 12085701) is 228 mm.
Very early clutch push rod
There was also a very early clutch push rod that utilized a single ball as the bearing between the end of the clutch push rod and the inner body (MG# 12085700).
Thanks to Piotr Sawiak for providing the following information on this very early clutch push rod.
The length of this clutch push rod is 223 mm. The ball I had was 4.7 mm diameter, but it should be 5 mm I think.