AC 428 Frua Coupe
The AC 428 Frua is one of the rarest and most exotic grand tourers ever produced, a remarkable Anglo-Italian collaboration that married British engineering with Italian coachbuilding artistry. With just 81 examples built over eight years, it is one of the most exclusive cars of its era and arguably AC's most refined creation.
The 428 was conceived as AC's gentleman's grand tourer — a more civilised alternative to the brutally powerful Cobra. The chassis was derived from the AC Cobra 427, with its robust tubular steel construction, fully independent suspension using transverse leaf springs and wishbones, and four-wheel disc brakes. The engine was Ford's mighty 428 cubic inch (7.0-litre) FE V8, producing 345 bhp and a prodigious 440 lb-ft of torque.
What made the 428 special was its body, designed and built by Pietro Frua's coachbuilding house in Turin, Italy. Frua created an elegant, restrained design that was unmistakably Italian in its proportions and detailing — a long, graceful bonnet, slim pillars, delicate chrome brightwork, and a beautifully resolved rear end. The body was constructed in steel (rather than aluminium), which contributed to the car's considerable weight but provided a solidity and quietness appropriate for a grand touring car.
Each chassis was built at AC's Thames Ditton works in Surrey, then shipped to Frua in Turin for bodying, and finally returned to Thames Ditton for final assembly, testing, and delivery. This complex production process was time-consuming and expensive, contributing to the 428's very high price and very low production numbers.
The driving experience was extraordinary. The massive Ford V8 provided effortless acceleration — the 428 could reach 142 mph and dispatch 0-60 in under 6 seconds, extraordinary figures for the mid-1960s. Yet the car was refined enough for long-distance continental touring, with a spacious cabin, comfortable seating, and a level of equipment that included electric windows, air conditioning, and leather trim.
The 428 was available as a Coupe (fixed-head) and a Convertible, with the coupe being the more practical and slightly more numerous variant. Both versions shared the same chassis, engine, and Frua styling. Most 428s were fitted with the Ford C6 automatic transmission, though a few received manual gearboxes.
With just 81 examples built (29 coupes and 51 convertibles, with one prototype), the AC 428 Frua is among the rarest post-war grand tourers. Its combination of Anglo-Italian provenance, Cobra-derived engineering, and Frua elegance makes it a highly prized collector's car.
With only 81 built, the AC 428 is an exceptionally rare car and purchases are infrequent. Every surviving car is known and documented by the AC Owners' Club. The steel body (unlike the aluminium Cobra) is susceptible to rust, particularly in the lower panels, sills, and wheel arches. The Ford 428 FE engine is robust and well-supported with parts through the American Ford performance aftermarket. The AC chassis and suspension are Cobra-derived and parts are available through specialist suppliers. Frua-specific body panels are unobtainable new and must be fabricated if damaged. Interior trim was individually specified and replacement requires specialist knowledge. Provenance documentation is essential. Professional inspection by an AC specialist is mandatory.
AC 428 total production: 81 units (1965-1973) — 51 convertibles, 29 coupes, and 1 prototype. Bodies were built by Frua in Turin and shipped to AC in Thames Ditton for assembly. The production process was slow and expensive, with each car taking several months to complete. Most cars were right-hand drive for the UK market, but some left-hand drive examples were built for continental Europe. Production was hampered by Frua's financial difficulties and eventually by the energy crisis of 1973.