Hi Nick, I haven't done it and I don't know anyone who has but I can see a possible issue with the Cloud transmission mating up to the Shadow engine. The Cloud has the old GM Hydramatic 4 speed trans whereas almost all the Shadows would have the GM TH400 Turbo Hydramatic 3 speed. Only the earliest Shadows up to VIN 4483 and only RHD cars were equipped with the 4 speed Hydramatic when new. If you could find one of those engines it may drop right in but you would have to do some part number research to see if the adapter and torque converter would mate up. The Shadow valley cover will have the brake pumps in it which you won't need for the Cloud. If you obtain a complete Shadow drivetrain with the TH400 and install it, you would then not have the Cloud mechanical servo for the brakes. In my opinion I think you would be better off rebuilding the engine in your Cloud rather than considering a swap.
Yeah, I kind of thought so, but just think how wonderfully simple the Chev engine is compared to the overengineered RR engine.
Unnecessary crank sludge traps, bolts instead of studs on the heads.
No aluminum block or wet liners.
I'm just going to say this, RR took a nice simple reliable GM engine and buggered it up by making it to complicated for no good reason.
From an engineering perspective, bolts are so much inferior to studs on a cylinder head. When torquing a bolt, you damage it because it turns inside the hole, leading to rotational stress, on top of the pulling force. Studs are different, they don't turn, and hence suffer only longitudinal stress.