Callaway is famous for its spiced up Vettes, but one of the first cars it put the magic touch on was an old Alfa
Corvettes with Callaway superchargers and kits have been a performance staple since the 1980s, but it was the twin-turbo versions of the mid-1970s Alfa Romeo GTV6. It was the most powerful version of the Alfa, with its 2.5-liter V6 putting out 233 hp, some 70 hp more than stock and even more than the 2.6-liter V8 that was available at one point.
Interestingly, even with the twin-turbos mounted, the car still passed US emissions regulations – this is what reportedly impressed GM which later asked Callaway to do a turbocharged Corvette around the year 1986.
The Alfa Romeo Callaway Twin Turbo GTV-6 not only gained turbocharging, but Callaway also did a number of other improvements to make the car what it always ought to have been. They improved the sloppy factory gear linkage, the ridiculously heavy factory steering and also tweaked the suspension for a great overall result say publications of the day.
Just 35 examples were ever modified by Callaway, so this sub-six-second to sixty car is definitely one you shouldn’t miss if you ever come across one – not that you will, since there are so few out there.