TOPIC: 750 Short Stroke Commando

I've been researching a bit about the 74 750 SS commando.
Very rare I guess


From my research:
300000 series 850 cases
850 SIZE bore barrels
special big bore pistons
Long rods
Short stroke billet crank EDIT=reliable source that norton ground normal bolt-up crank cheeks for shorter stroke
Head- big bolt pattern- re-angled valve guide 1.6" intake. This necessitates a reshaping of the chamber which ends up removing the desaxe squish band. . Replicating Dunstall/Mick Hemmings/Fair Spares(Norvil) treatment to an 850 head. The difference of RH7 or RH8 (as shown above) is unknown to me.
4S cam
More?$$$
Externally it is an 850 in appearance.
One head on ebay right now claiming to be RH7 $3500
I heard one of these engines run in a featherbed in the 90's while pit crewing for Pete Kogut and Carl Hochenson. The sound was different and howled compared to a long stroke NHT.
dynodave