The "Dino" was created as an agreement between Fiat and Ferrari to create a new "badge" for the makers to sell. There were to be cars made by and sold by Fiat and a car or cars made by Ferrari and sold by Ferrari all to be called Dino. The initial intent was that the cars were not to carry any identifying marks of the maker so that all would equally be Dino. Of course this never happened ... look at the engine castings and there you will find FIAT. The first to be introduced was the Dino Spyder which carried some FIAT badging around on the car ... the wheels were marked FIAT, a FIAT badge on the body and some other indications of its maker.
The engine would be derived of a Ferrari V6 racing engine as Ferrari needed a "stock block" that would be produced in a number of at least 500 for use in racing and had no excess capacity or money to build that number of engines. Fiat and Ferrari engineers worked on the engine to try to civilize it for road use. The valve covers on this V6 are marked "Dino."
The first series of cars released in 1967 were called Dino Spyder 2000, and Dino Coupe 2000. As production began, the engine was found to be expensive to maintain under warranty and several changes were made to the engine after about 1000 or so had been manufactured. The engine block and heads were aluminum alloy as was the practice of Ferrari and all were cast and built by FIAT. The last Dino engine was redesigned a bit and the capacity taken out to 2400cc and carried an iron block and aluminum heads not something that Ferrari had done on a road car but not an unusual practice for FIAT. The 2400 engine was cast by FIAT and some engine may have been assembled at the new Ferrari facility by FIAT.
Ferrari was more comfortable with the Dino name for a non-twelve cylinder car and never intended to label the cars as Ferrari ... the 206 GT and 246 GT were never labeled as Ferrari by the factory. The Dino 308 GT/4 with V8 engine was introduced in 1973 with a four-place body by Bertone, mainly because: as the story goes, Pininfarina was not interested in designing the car and the best selling Dino built by Fiat had been the Dino Coupe designed by Bertone. The 308 Dino GT/4 carried a V8 engine that was designed and built by Ferrari and was placed in a chassis designed and built by Ferrari at Ferrari's new facilities built by the partnership of FIAT and Ferrari.
The 308 GT/4 was labeled as Ferrari some time in around 1976 primarily to give the dealers in America something to sell as the DOT and EPA regulations were eliminating the other cars built by Ferrari.
The 206 GT and the 246 GT were developed by Ferrari to be called a Dino, but there is little other than the engine that would suggest that the cars built by FIAT as Dino and those cars built by Ferrari as Dino were even related. The Dino GT chassis' were engineered and built as other Ferrari cars were built and the transaxle in the Dino built by Ferrari was uniquely developed for the Dino to be built by Ferrari. It is hard for those of us that own a Dino built by Fiat to see that the Dino built by Ferrari is even a cousin as the cars are so differently engineered. All are Dino, but I believe that the Dino 206 GT and the Dino 246 GT have far more "Ferrari" in them than they are given credit for.
The Dino badge failed for FIAT as there never was the demand that FIAT had hoped and the Dino as built by FIAT was only sold in several markets. The cars were expensive to buy and maintain as they proved to be problematical in daily use. So, about the time that the Dino GT manufactured by Ferrari was being built in 1969, FIAT was internally struggling to continue the manufacture of their version. By the time that the Dino 246 GT was being built by Ferrari, FIAT was getting out of the Dino business. FIAT continued to build the Dino V6 engines until the series was canceled by Ferrari. The same engine and drive unit used in the Dino GT as built by Ferrari was used in a Lancia model for several years by was not called anything other than a Lancia.
The only common parts and pieces between those Dino built by FIAT and those Dino built by Ferrari are the engines and badges. The engine originally came from Ferrari as a "Dino" racing engine and the modifications made to the engine throughout its life were engineered by partnership of FIAT and Ferrari. The engines are essentially Ferrari designed engines constructed by an outside facility. This is nothing new for Ferrari. Early engines in some race cars were reportedly constructed by outside suppliers for Ferrari to a Ferrari design. The GT chassis were designed by Ferrari with no interference with outside pressures and the GT were assembled by Ferrari personnel in a Ferrari facility and tested by Ferrari before release. There is as much Ferrari engineering and development in the Dino GT as in any Ferrari.
Are the Dino 206 GT and Dino 246 GT and for that matter the Dino 308 GT/4 "real" Ferrari? In my opinion, from a general engineering standpoint the answer is yes.
Conversly, is the Dino 2000 or Dino 2400 as built by FIAT or the Lancia that used the Dino GT unit a Ferrari? The answer is, in my opinion, no as the engineering and development was carried out by FIAT for their version of the Dino and Lancia for its use of the Dino unit.
To say that the Dino 206 GT and 246 GT are not a "real Ferrari" is to take one sentence reportedly spoken by Enzo Ferrari some time in the 1950s or 1960s and assign an almost "God like" gospel truth to the statement.
The engineering and development of the GT was carried out in the same method and manner as the 365 GTB/4 or the 250 GTO for that matter. The Dino GT and GT/4 were never intended to be recognized as Ferrari, but under that "Dino" badge these cars have always been Ferrari.
Just my opinion