The EK range consisted of four-door sedans in two trim levels, five-door station wagons in two trim levels, a two-door coupe utility and a two-door panel van. The six models were marketed as follows:
- Holden Standard Sedan 
- Holden Standard Station Sedan
- Holden Special Sedan
- Holden Special Station Sedan
- Holden Utility
- Holden Panel Van
The EK, the first new Holden released in the 1960s, was a minor facelift of the superseded FB series, with obvious changes limited to a new grille of eight vertical bars (instead of six), and body side mouldings. In terms of finish, "Standard" vehicles were painted in a single colour with no additional trimming or fittings, while "Special", the most popular model, came with stainless steel trims along the side and a white roof, as well as chrome Special badges, and two-tone vinyl interiors. Parking lights were incorporated into the top grille bar, and other changes included new exterior badges, a revised interior trim, electric wipers (replacing the old vacuum-type ones), and a new fresh-air unit  with a new ventilation air intake located forward of the windscreen.
The only significant mechanical change from the FB was the introduction of the first automatic transmission to be offered on a Holden. Marketed as the Hydra-Matic, it was a well-regarded three-speed unit which was fully imported from the United States. It was offered as an option on only the Holden Special models. Other options included more than 30 approved NASCO Accessories, such as a bonnet lock, a locking tank cap, a car heater, external rear-view mirrors, or a sunshade.
Visually, the two commercial vehicles, the Utility and Panel Van, remained almost identical to the previous model, the FB. In fact, the FB rear quarter panels and tail lights were carried over to the EK commercials. However, the carrying capacity was increased from 8 to 10 long hundredweight (410 to 510 kg) by fitting upgraded springs.
Like the FB series, all EK models were powered by a 138 cubic inches (2,260 cc) inline six-cylinder engine, commonly referred to (due to its paint colour) as a "grey motor" having been bored out .061 inches (1.5 mm) over the 3-inch (76 mm) bore of earlier models, producing 75 bhp (56 kW).
Production and replacement
Like the FB series, the EK was sold in several overseas markets in both left- and right-hand-drive configurations. Primary markets included New Zealand, South-East Asia, and the Pacific Islands. The EK was also sold in South Africa, where it was marketed as the car "built for a country like ours." Due to its rugged nature, it was very popular with farmers in South Africa.
In 1961, 112,680 units were sold to the public (compared to 140,336 units in 1960) and Holden employed over 18,500 people. However, sales the following year slowed as the effects of the Recession of 1960–61 began to be felt in the Australian economy, coupled with a new 40 per cent sales tax on motor cars. Further, competitors XK Ford Falcon and R Series Chrysler Valiant "compact sixes", which had a squarer less cumbersome look, further ate into Holden's market dominance. After a production run of 150,214 vehicles, the EK was replaced by the Holden EJ series in July 1962.
- Norm Darwin, 100 Years of GM in Australia, 2002, pages 232-233
- "Holden, Australia’s Own Car" (GMH sales brochure for Holden EK Sedans and Station Sedans)
- "Holden, Australia’s Own Utility, Australia’s Own Panel Van" (GMH sales brochure for Holden EK Utility and Panel Van)
- Tony Davis, Aussie Cars, 1987, page 81
- http://www.uniquecarsandparts.com.au/holden_EK_nasco_accessories Retrieved 2009-08-16
- Holden EK Technical Specifications Retrieved from www.uniquecarsandparts.com.au on 13 February 2010
- Wright, Cedric, ed. (August 1968). "A car owners' report: Holden (1960-66)". CAR (South Africa). Vol. 12 no. 7. Cape Town, South Africa: Central News Agency Ltd. p. 28.
- Holden EK http://www.uniquecarsandparts.com.au/car_info_holden_ek.htm Retrieved 2009-08-16
- https://www.webcitation.org/5sm1y5uLn?url=http://media.gmcanada.com:8221/aus/holden/en/company/history/HH13Part1.pdf Page 49 Retrieved 2016-12-17
- http://www.uniquecarsandparts.com.au/car_info_holden_ek Retrieved 2009-08-16
- Norm Darwin, 100 Years of GM in Australia, 2002, pages 234-235
- Norm Darwin, The history of Holden since 1917, 1983