2019 Shannons Melbourne Spring Classic Auction

1970 Holden HG Monaro GTS 186 Coupe

$60,000 - $75,000

No Reserve


Engine 186ci six-cylinder
Gearbox Four-speed manual
Engine No. 186S362583
Chassis No. HG02399M
Body Work Coupe
Colour Silver Mist Green
Interior Antique Gold
Trim Vinyl
Wheels Steel sports
Brakes Disc/drums

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Introduced in July 1970, Holden's HG model was the third and final facelift of the HK/HT series and was chiefly notable for the introduction of the new Tri-matic automatic transmission. Apart from a revised grille, the remaining sheetmetal was largely shared with the HK/HT models and the model line-up consisted of the same Belmont, Kingswood, Premier and Brougham trim levels. Holden had an extensive list of six and eight-cylinder engines on offer, ranging from the 130ci six through to the 350ci V8, along with no less than six different transmission types, the latest three-speed Tri-matic a big improvement over the old two-speed Powerglide. The Monaro sports coupe was again the hero car of the full-size Holden range, with its pillarless fastback styling still managing to look fresh and appealing. The GTS package included the option of stripes, Houndstooth check cloth trim and a wide range of distinctive colours, plus full instrumentation (including tacho), GTS badges etc. Although base GTS Monaros came with the 186S six-cylinder motor, more power was available through the choice of 253ci or 308ci V8 motors (first seen on the HT in October 1969), the latter using a Salisbury 3.36:1 rear axle when fitted with the auto transmission, or the mighty 350ci V8. With the XU-1 Torana taking over as Holden's frontline weapon at Bathurst, the Monaro GTS 350 assumed a new role as a high-performance gentleman's GT, with a good many equipped with automatic transmission and air conditioning. Although official production figures have never been released for the HG Monaro GTS 350, around 400 are believed to have been made. Production of the last of the original shape Monaros was short-lived and the HG was replaced by the all-new HQ in 1972, making it very hard to locate good original examples.


  • Nice 1970 HG-model Holden Monaro GTS
  • Silver Mist green paint with Antique Gold trim
  • Rare 186S six-cylinder manual GTS
  • Ready to enjoy
  • No Reserve
Holden’s first-generation Monaro is an Australian icon and eminently collectible in any form, especially the ultimate sports-oriented GTS models. Here we have a July-built 1970 HG-model Monaro GTS fitted with the base 186S six-cylinder engine. The very interesting aspect of this vehicle, is that it appears to have been optioned with both the heavy duty ‘Saginaw’ 4 speed manual transmission, and a ‘10-bolt’ limited slip differential, if not from factory, then very early on its life. It is finished in its original hue Silver Mist Metallic duco with contrasting Antique Gold trim. The paint has been refreshed at some stage and now exhibits some patina, while the interior has also been refurbished with new vinyl. It’s fitted with the correct GTS factory steel Hubcaps fitted to steel wheels with redwall tyres, plus optional factory mudflaps and a tow bar. There is also some evidence, that the engine did at one stage have a different twin-carburettor setup fitted. It’s all complete and in very good condition for its age. The gearbox has been rebuilt, there’s a new heater core and a decent wad of maintenance receipts. It also comes with its original owner’s manual and service book. A nice example that could be used as is or improved, our HG Monaro GTS was previously on full Victorian registration, however it will be offered for sale unregistered and with No Reserve.

Note: Shannons advise that all potential buyers research all vehicles before purchase to authenticate originality.


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Monday 23 September

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