The 1966 Supplementary Regulations have been kindly provided by Laurie Mason. The last page lists various monetary amounts – the hand writing is that of Carl Kennedy, Competitions Manager for Ampol through to 1972 or thereabouts.
Some interesting excerpts from the regulations:
Entry fee and Prizemoney
The entry fee was $40. Prize money totalled $18,000 with the winner likely to take away $2,600.
Vehicle Eligibility
Vehicles had to be roadworthy and two-wheel drive with at least 1000 units produced in a year, or recognised by CAMS as Group D or E, which generally aligned with the FIA 2 Touring Car category. All vehicles were allowed to be fitted with a roll bar (although this was not compulsory except for convertibles), a laminated windscreen, extra lights, under body protection, extra fuel tanks etc.
The Series Production Category (confusingly referred to as Group 1 in the Regulations), which aligned with FIA Group 2 (Production Touring Cars), only allowed limited further modifications such as tyres (standard rims), carburettor jet sizes and reboring up to 0.040 inches.
The Improved Production Category (referred to as Group 2 in the Regulations), which aligned with FIA Group 5 (Special Touring Cars), allowed significant further mechanical modification except that the engine must be from the same manufacturer and have the same number of cylinders and configuration.
All vehicles had to carry a first-aid kit, fire extinguisher and seat belts.
Timing and Scoring
Timing was to the minute except on Special Stages where the Regulation 49(c)(i) stipulated that increments of 1/4 minute would be used (1 point per 15 seconds late). Although the route instructions indicated that one-sixth minute timing was used with a point per 10 seconds late, media reports and people’s recollections are that quarter minute timing was used!
No special sections were supposed to be conducted in Victoria due to a ruling from the Victorian State Council of CAMS, although there were special stages around Bethanga, which IS in Victoria! Because of the significant number of special stages on the final night, the results were almost guaranteed to be wide open until then.
Other
Starting order was determined by a ballot. There was no preference given to experienced crews! (It wasn’t until 1968 that this changed). However, it seems that after each day the running order was rotated, so after Wagga, cars 25 to 48 went out first then 49 to 71 followed by 1 to 24!