1967 AC 428

2dr Convertible

8-cyl. 7014cc/345hp 4bbl

#1 Concours condition#1 Concours
#2 Excellent condition#2 Excellent
#3 Good condition#3 Good

$207,000*

equal0%
#4 Fair condition#4 Fair
Value Graph04/2407/2410/24$50k$100k$150k$200kJan 2025
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1965-1973 AC 428 stats
Highest sale
$425,341
Lowest sale
$28,562
Most recent sale
$417,000
Sales
33

Photos

23 photosImages may not reflect selected vehicle.

1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
1971 AC 428 Coupe
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Model overview

Model description

Even as AC prospered thanks to Carroll Shelby’s Cobras, Derek Hurlock dreamed of a sophisticated Anglo-American GT, something not unlike the Italian Iso Grifo. He planned to combine the proven Cobra chassis with an American V-8 and an Italian body. Hurlock contacted Pietro Frua in Italy, who suggested a design he had basically already sold to Maserati as the Mistral, and also to Monteverdi. AC’s version would be dubbed the 428.

The Cobra’s tube-frame chassis was lengthened six inches, but retained the adjustable suspension and used the less-sophisticated 428 cubic inch Ford V-8 instead of the side-oiler 427. The resulting 345 bhp, 3,155 pound “Gentleman’s Express” could do 0-60 mph in 6 seconds, and had a top speed of 145 mph while delivering appalling, sub-10 mpg fuel consumption. An estimated 49 coupes, 29 convertibles, and three specials were built between 1965 and 1973, when the energy crisis finished it off.

The first 428 was a convertible and shown at the Earls Court Motor Show in 1965, but it took a year for production to begin, by which time a gorgeous fastback coupe had been added. The 428 featured four-wheel disc brakes, all-round independent suspension with coil springs and rack-and-pinion steering. Power steering was not offered, and knock-off wire wheels were chosen instead of alloys.

AC shipped the frames to Italy to be bodied by Frua, and they were returned to the the AC factory at Thames Ditton, west of London, to be fitted with the Ford powertrain and (usually) a Ford automatic transmission. Enthusiasts joked that the cars travelled so much during production, they were out of warranty by the time they were sold. This slow and laborious arrangement accounted for the small number of cars constructed – and also made them more expensive than even an Aston Martin DB6. The plus-side for the customer, though, was perhaps summed up best by Autocar, who said that “like anything exclusive, especially from craftsmen, it costs a lot of money. For this you get one of the fastest cars on the road, guaranteed to make an impression anywhere, and backed by a small company who cars.”

Sales were disappointing, but production was slow, anyway. Buyers tended to be conservative and though the survival rate is not high, some well-maintained cars remain in the hands of families of careful owners. The 428 outlasted the Mistral by three years, but there were 10 times as many of the Maseratis built and a mere handful of Monteverdis. Some glass is said to be common to the 428, Mistral and Monteverdi.

The 428 falls in between two camps. It lacks the brutal magic of the Cobras but it isn’t quite Italian enough without a high-revving V12 alloy engine. As is typical with Italian coachbuilding, rust is an ever-present threat in the body, so check the sills and the cowl/fender intersections. A detailed pre-purchase examination is essential, and must include a thorough check underneath. All-in-all, it’s surprising that more 428s have not been converted to Cobras, which are worth about five times as much, and cannot be confused with anything else.

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Common Questions

The value of a 1967 AC 428 can vary greatly depending on its condition, mileage, options, and history. Typically, you can expect to pay around $171,000 for a 1967 AC 428 in good condition with average spec.

Many factors can increase a car's value including excellent condition, exceptional originality, a recent restoration, low mileage, unique provenance, desirable options, popular or unique color choices, and excellent maintenance records. Upgrades and modifications that enhance performance or aesthetics can also add value.

Factors that can decrease a car's value include unusually high mileage, poor maintenance history, visible wear and tear, accidents or damage, title issues, and gaps in ownership history. Additionally, less popular color choices and extensive modifications that don't appeal to a broad audience can reduce value.

Mileage plays a significant role in a classic car’s value. Lower mileage usually increases value because it indicates a higher degree of originality, is rarer, and suggests less wear and tear. However, cars with exceptionally low mileage may also have maintenance needs due to lack of use. Whether someone should pay more for a vehicle with lower miles will depend on how they plan on using it, and the vehicle's specific condition.

The value of modified cars differs widely based on the type and quality of modifications. While some modifications can significantly increase value, especially performance enhancements and high-quality custom work, others may not add much or could even detract from the car’s value if they appeal to only a limited audience.

All prices shown here are based on various data sources, as detailed in About Our Prices. The Hagerty Price Guide is for informational purposes only and is not intended as financial advice. More information on how forecast models are calculated can be found on Forecasted Values page. For additional information and a complete description of benefits, visit hagerty.com/legal. Purchase of insurance not required for membership in HDC. Hagerty, Hagerty Valuation Tools & Hagerty Drivers Club are registered trademarks of The Hagerty Group LLC, ©2024 The Hagerty Group, LLC. All Rights Reserved. The Hagerty Group, LLC is a wholly owned subsidiary of Hagerty, Inc.