Group D Production Sports Cars was aCAMS motor racing category current inAustralia from 1972 to 1981.
The Group D category catered for series-production type automobiles, other than those eligible to compete asTouring Cars, which were:
Bodywork could be of an open or closed type and was required to provide adequate accommodation for a minimum of two persons.[1] The original design of the cylinder-block, cylinder-head, transmission and suspension had to be retained andforced induction was permitted only if fitted as standard by the manufacturer.[1] Minor changes to bodywork, mudguards and interior trim were permitted.[1] A 5000cc engine capacity limit which was applied at the time of the introduction of the category[2] was later raised to 6000cc.[3]
Cars from the Group D Production Sports Cars category were eligible to compete inAustralian Sports Car Championship races alongside those from theGroup A Sports Cars category from 1972[4] to 1975[5] and in May 1975, Production Sports Cars contested the revivedAustralian Tourist Trophy held atCalder Raceway.[6] In 1976, Group D became the sole category to contestthe Australian Sports Car Championship, a situation which applied through to 1981.[7] The category was discontinued at the end of that year[8] and the Group D designation was applied to a new category forGT Cars from 1982.[9]
Prior to the introduction of the new category in 1972,[10] the Confederation of Australian Motor Sport had promulgated regulations for bothGroup B Improved Production Sports Cars and Group D Series Production Sports Cars, the former for modified vehicles of which at least 100 examples had been produced and the latter for virtually standard cars.[11] Both categories had been introduced in 1964.[12]