The Big Blocks with the history that stretches back to 1967 are no more. I'm not certain when the last 1400's were built? I'd think 2018/19 at a guess. The CARC series ceased all production in 2016 but all models other than the Griso I think stopped in 2014 as none of the other models were built using the Cali 1400 sump which the Griso adopted in 2015.
The truth of the matter is that the 'Nuovo Hi Cam' in both 1200 and 1400 form was never going to be able to meet €5. I love the motor but I'll be the first one to tell you that it is inefficient, thirsty and dirty! It's side draft porting and long cam overlap mean that cylinder fill is compromised in a large part of the rev range and pipe harmonics are crucial to performance, (Some of you may be familiar with my carpet-chewing, spittle-flecked ranting about the unsuitability of 'Shorty' exhausts put on Griso's for styling purposes!). Even at the optimal point there is still a considerable loss of unused incoming charge that, due to the head design, simply gallops across the top of the piston and exits the exhaust valves rather that filling the cylinder and producing work. That means fuel economy is shit and those hydrocarbons are wasted just dirtying up the environment.
Even with air injection as used on the last of the 1400's they were a dirty thing, made worse by people putting loud, unbaffled pipes without Catalytic converters on them so they sounded like a shipping container full of farting elephants!
No, the Big Blocks are gone and I reckon the Smallblocks won't be far behind. Thing is neither will I so it doesn't worry me unduly and within twenty years internal combustion, at least of fossil fuels, will have been consigned to the dustbin of history anyway! And good riddance! Anybody who is an 'Enthusiast' will still be able to get fuel for their old vehicles but as a day to day option they simply won't exist. That's fine, people will have newer and different vehicles and toys. I am always amazed though by how far things have come in my lifetime as far as vehicular propulsion has gone. If you'd told me as the spotty kid on his first moped that when I retired I'd be riding a motorbike that effortlessly made twice the horsepower of my dads car from an engine only two thirds the size I would of looked at you as if you were barmy!