Summary

16,300 documented miles, original engine and original Tank Sheet on this rarest of small block Corvettes produced during the muscle-car era. M22 Rock Crusher 4-speed transmission.

Details

The ZR1s were equipped with the heavy-duty racing equipment developed in the L88 Corvettes of 1967, '68 and '69. The ZR1 package could not be ordered with any creature comforts. Air conditioning, power steering and radio were not options. The 1972 ZR1 is as rare as the 1967 L88. Both were 20-unit production runs. One of 14 coupes, this documented ZR1, with a mere 16,300 miles, carries all the rare stuff: 350 special high-performance V8 with solid lifters, M22 Rock Crusher 4-speed transmission, F41 special heavy-duty suspension, 4.11:1 posi-traction and J56 power dual-pin disc brakes. It is featured in its factory color combination of stunning Elkhart Green and Saddle Leather complete with its two-page GM Corvette order copy (Tank Sheet). At the heart of the ZR1 concept was the outstanding LT1 350/255hp block, whose understated factory rating was the result of a heavy-duty 4-bolt main bottom end, forged crank, rods and pistons, free breathing heads, a solid lifter cam, dual-plane aluminum intake manifold and 780cfm Holley 4-barrel carburetor. The high-revving LT1 was joined on the ZR1 roster by transistorized ignition, a high-capacity aluminum radiator, metal fan shroud and thermostatic fan, a Muncie M22 Rock Crusher close-ratio 4-speed, heavy-duty power brakes and special springs, shock absorbers, and front and rear sway bars. Soft Ray tinted glass and the posi-traction rear axle were standard; virtually no other items from the option list could be ordered. The ZR1 was a purpose-built machine. It is equipped today as it was when delivered to Krigbaum Chevrolet in Carmi, IL. Documented by the original engine and Tank Sheet, this ZR1 was the recipient of a nut-and-bolt restoration. It is rare, desirable and factory-built. These vehicles were given the RPO code of ZR1 as Zora Racer One, a tribute to the then current chief engineer, Zora Arkus Duntov, the legend behind Corvette performance. 16,300 documented miles, original engine and original Tank Sheet on this rarest of small block Corvettes produced during the muscle-car era.