The 1970-1/2 – 1972 ZR-1: There have been three distinctive “ZR-1 / ZR1” Corvettes since 1970. The first ZR-1 was actually the last of Duntov’s “Racer Kit” option packages, designed to provide a Corvette customer with the basics needed to go SCCA racing. Offered from 1970-1/2 to 1972, the RPO ZR-1 (and RPO ZR-2) were strictly “under-the-skin” hardware packages. There were no special badges, scoops, vents, limps, bumps, or budges. From the outside, the ZR-1 looked like any other LT-1 or 454 (as with the ZR-2) Corvette. These unique cars were not “marketed” in any way at all. You had to know about them to seek one out, and most of them, likely never saw street use. Read More