The HG Holden was the final refinement of the HK-T series, and introduced the Australian-Built, three speed Tri-Matic automatic transmission
to the full size Holden's.
The model range was as before, with sedans, wagons, Monaro coupes and light commercial models in several levels of specification, plus the Brougham luxury saloon.
The Tri-Matic transmission
was standard on the Brougham and Premier and available on all other models as an option, except of course for the Monaro GTS 350, which was offered with either a 4 speed manual or the regular two speed Powerglide
As well as a more elaborate plastic grille and cleaner body decorations, the HG had new safety features, colours and trim designs. Improved disc brakes
were now fitted to all V8 models, while the suspension
system of the Monaro GTS was modified for greater comfort.
This was possible because race duties had been taken over by the smaller Torana, so the Monaro no longer needed to be sold in 'Bathurst' trim.
All the HG changes, including the optional Tri-Matic transmission
and choice of 5 locally produced engines, were offered on the big selling range of Holden passenger-car derived light commercials.
The Model range included: Belmont Sedan, Belmont station wagon, Belmont panel van, Belmont utility, Kingswood sedan, Kingswood station wagon, Kingswood utility, Premier sedan, Premier station wagon, Brougham sedan, Monaro coupe, Monaro GTS coupe, Monaro GTS 350 coupe.