In 1986 GM Dealer Sport developed the Astra 4S as a possible Group S contender. It raced only once in the last round of the 1986 British Rally Championship before the Group S series was cancelled altogether.
Within the regulations, GM was allowed to modify the car substantially with new front and rear subframes and Kevlar composite outter body panels.
Unlike the production MKII Astra, the 4S had it’s engine mounted longitudinally and powered all four wheels. The 2.4 liter unit produced 340 bhp that was sent to all four wheels through an X-trac unit.
Vauxhall Astra 4S In Detail
2400 cc / 146.46 in³
253.5 kw / 340 bhp
141.67 bhp per litre
354.17 bhp per tonne
960 kg / 2117 lbs
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