Given that the 906 Paso has a cam timing that is quite 'soft', has anyone tried putting a set of 900ss cams to the 906 engine? They have the same lift for inlet and exhaust but longer duration.

States here http://www.moto-one.com.au/performance/duccamspec.html that same cams in SS, 906, 907.

Nope, as per my 906 instruction manual the 906 has an inlet/ exhaust timing of :
Inlet 20/60 Exhaust 58/20 (excluding Swiss model)
But the spec for a 1997 900ss is inlet/ exhaust timing: Inlet 24/70
Exhaust 59/29 see the next link (Andres Ducati 900ss homepage)

http://mysite.mweb.co.za/residents/an000003/ele2.jpg

Furthermore there is an article within this very website from performance bikes that states the the 906 cam timing is the softest tune from Ducati yet (1989).

http://ducatipaso.org/docs/906/articles ... -03-89.zip

So according to my information it would appear that the 906 has a softer tune than a 900ss.

Ducati belt-drive two-valve twins restoration and modification guide states:

906/907ie/900SS/E900/M900....................20°/60°...58°/20°
900SS (1994-1996).................................43°/85°...82°/46°
900 SS FE (1997-98)/M900S (1998-99)..........24°/70°...58°/29°
900SS (1998-)/M900 (2000)......................25°/75°...66°/28°

so it depends on the year.

G.

Hmm, wonder which ones give the most power?

On the 2V 900, alot seems dependant on manifold lenght:
http://www.visi.com/~moperfserv/carbs.htm

ST2 cams are supposed to be the hot setup for the 900SS.

They are also very good choise to 907IE engine...