From Q to B . . . . Some History

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15 July 1971 saw the release of an all new, ground up redesigned, bigger range of Holden cars. General Motors-Holden's unveiled the HQ series which introduced an all new body, chassis, suspension and new engine variants. With the HQ came major changes and improvements to all Holden variants.

This completely new design Holden was the first Holden built with a monocoque chassis frame (a type of vehicular construction in which the body is combined with the chassis as a single unit), which improved rigidity and reduced noise and vibration. It introduced other new features as standard which included flow through ventilation and four–wheel coil springing.

The HJ series was released in October 1974 and was an improved and facelifted version of the superseded HQ series.

The HX series was released in July 1976 and featured only minor updates to the exterior, notably the grille and badge work. HX engines had significant changes made to them to meet new Australian emissions regulations.

The HZ series was released in October 1977 it had minor updates to the exterior over the HX series, and saw the introduction of what Holden termed "Radial Tuned Suspension" (RTS) across all models. RTS made significant changes to the suspension which greatly improved the handling finesse, while not compromising ride quality.

The Holden WB series was released in April 1980, the range consisting of two coupe utility models, a panel van and a cab chassis truck. The WB series was a facelifted version of the HZ series, and was only offered in commercial vehicle body styles. Production was discontinued in 1984.