For 1985 Chevrolet offered two new Z-cars to accompany the popular Z28, one hot one hotter. The more potent of the pair was the IROC-Z, and played off the newly revived International Race of Champions, which was run with modified Z28s.  The IROC-Z was reported to sport a revised front fascia with softer contours.  The … Continue reading 1984: Chevrolet’s Plague of Z