The Holden HZ series, introduced in October 1977, marked the final chapter of Holden’s larger, American-influenced body designs. It represents the peak of the GTS lineup before the brand transitioned toward European-inspired styling and engineering, a shift that would soon be realised with the release of the Commodore in 1978.
A key advancement of the HZ range was the introduction of Radial Tuned Suspension (RTS), significantly improving ride comfort, steering accuracy and braking stability. This system allowed the vehicle to better handle Australian road conditions, offering a more controlled and confident driving experience than earlier models.
The HZ GTS distinguished itself with a number of unique styling and performance features. These included quad quartz halogen headlights, a mesh-style grille, integrated front and rear spoilers, colour-matched bumpers, and optional body striping for a more refined appearance.
Initially available with a 4.2-litre V8, the model transitioned exclusively to Holden’s well-known 5.0-litre (308ci) V8 in April 1978, coinciding with the introduction of standard power steering.
Inside, the GTS featured upgraded instrumentation, supportive contoured bucket seats trimmed in tartan cloth, and a sporty steering wheel. Buyers could also opt for distinctive five-spoke, colour-coded steel wheels to further enhance its visual appeal.
This item includes a certificate displaying its individual production number.
