In 1962 appeared a short-lived improved version of the 2.5-litre Flaminia GT. It's main distinction was a revised engine, where the Pininfarina coupe received a triple barrel carburettor the GT got even better: its original Solex double-choke was replaced by no less than 3 Weber twin-barrel carburettors. This provided both ample aspiration for the V6 engine and headaches for the mechanics who had to synchronize them ever so often.
The same engine now produced 140 hp @ 5600 rpm and top speed was up to 191 kph, specs bordering on performance car qualities. Together with this increase in power the ratios in the 4-speed gearbox were adapted, resulting in higher gearing in the lower gears and a lower geared final drive, leading to a higher overall gearing.
Externally there was little to distinguish this version from the previous model. A "3C" indication was added to the model name, referring to the 3 carburettors, and a small enamel badge with these letters appeared at the front of the air-scoop on the hood. Also reversing lights were added to the rear light clusters, though many earlier cars were retrofitted with these lights, and some minor details were changed.
This revised GT was seen as an important improvement over the original model, offering a more lively performance in addition to a more flexible drive with less gearchanges while retaining its good roadholding and steering qualities. Production of the GT 3C 2,5 lasted only 1 year (1962 till 1963) but still 682 were sold. Remarkably these days this version of the GT is harder to find than other versions.

The interior of the GT was simple but nice. Panels and seats were covered with leather while portions of the dashboard and doors were metal finished in the exterior color. Currently this practice is regarded as very basic and cheap but the GT proves it can actually look pleasing and luxurious as well. In front of the driver there was a dominating classic Nardi steering wheel with wooden rim. Behind it were two large dials displaying all sorts of information. Two small, angled sticks protruded from the dash at either side of the steering wheel: the controls for the lights and the indicators.
Between the dials and the glove compartment there was room for the controls for the ventilation and the heater, as well as the ignition lock. There was a chrome strip with letters spelling "Lancia" above these controls, connecting the chrome-rimmed edges of dial and glove compartment lid. This strip was replaced with radio controls if that option had been chosen. In the middle, on top of the dashboard, there was a closed ashtray. Confusingly hardly any of the knobs and handles on the dash offered any kind of indication of what they were for, necessitating a thorough study of the manual.
Only two individual sporty seats were fitted into the interior; at the rear there was a basic upholstered section which provided room for additional luggage. This changed late in 1962 when a 2+2 version of the GT was introduced. It was named GTL and was slightly longer, offering two small seats at the rear with hardly any leg room. Just 3 GTL coupes were made with the 3C 2.5-litre engine.

Already in 1963 a new engine was fitted in the GT. It was the increased capacity V6 displacing 2.8-litre but still including the 3 double Weber carburettors from the previous model. Obviously this boosted performance once again, though most of it was directed at improving torque. Now the GT had 150 hp @ 5400 rpm and a top speed of 194 kph. Most notably torque had increased by 10%, improving engine flexibility even more.
Again external modifications remained very limited. Now the numbers "2,8" were added to the rear of the car, on the bootlid at the right side of the license plate. The 3C badge was retained on the hood, completing the designation of this Flaminia into "GT 3C 2,8". Near the end of the production of this model chrome trim strips were added to the sides of the body, below the doors.
Clearly this last incarnation of the GT was the best yet but somehow public interest faded away. It was made until 1965 and in those few years only 168 of these cars were sold, spelling commercial failure.

Besides the GT also the GTL was offered with the 3C 2.8-litre engine, and it was a bit more popular. The GTL, the last letter standing for "lungo" (long), had a wheelbase extended by 8 cm compared to the GT and weighed 60 kg (1,420 kg against 1,360 kg) more. These figures affected the performance slightly, reducing top speed by 3 kph to 191 kph and also acceleration was down a bit. On the other hand it offered more interior space and the possibility to take a pair of kids along for the ride, apart from two adults.
From the outside it's hard to see the difference between the GT and the GTL, those 8 cm extra don't really show in the design and there are no other identifying features. The best way to tell a GT from a GTL is to take a look in the interior at the space behind the front seats. If there are only some panels covered with leather then it's a GT. If it shows a cushioned bench with to seats then it's clearly a GTL. The GTL was made alongside the GT and that meant that it had the same features and that its production also ended in 1965. About 300 were made of this version, culminating in a total of 468 2,8-litre Flaminia GTs produced.

Obviously the 2,8-litre version of the GT is nowadays the most attractive classic of this range. Strangely, even if the total of 2.5-litre versions made outnumber that of the 2.8-litre by almost 3 to 1, it's more likely to come across a 2.8-litre GT than a 2.5-litre. This gives some room to the speculation that a portion of the 2.5-litre GT models have been converted to 2.8-litre specs. Given the limited number of visible differences this is not hard to do, if there's a 2.8-litre engine available. Expect the market value of the GT and GTL to be about twice that of a corresponding Pininfarina coupe.