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When Chevrolet changed gears to the LT1 engine, Callaway revealed their new SuperNatural line and the CR1 based on the ZR1’s LT5. Options for the CR1 included the radical Aerobody, German upholstery and special wheels, brakes and exhausts. The CR1 used a larger displacement to produce either 475 or 490 bhp.
1993 Corvette Owners User Manual
This Owners Guide contains important information regarding the operation and maintenance of your 1993 Corvette. In order to obtain maximum enjoyment and usage from your car, we suggest that you familiarize yourself with the contents...
The early C4's had their problems, what with the 1984 Cross-Fire Injection and its unusual 4+3 manual transmission. By the late 1980's, the fourth-generation Corvette had evolved into a more desirable automobile, thanks in part to the arrival of the ZR-1. 
Chevrolet's introduction of the LT1 in 1992 as the base engine in the Corvette phased out the L98 based Callaway Twin Turbo. Previously, Callaway Corvettes made their increased power through positive manifold pressure; now they made it through increased displacement and finesse. Initially called the CL1 or CR1, they designated the chassis they were built upon. They were based on the pushrod LT1 cars (CL1) or the 32 valve DOHC LT5 ZR-1 cars (CR1).
1993 Corvette Sales Brochures
Download this 1993 Corvette Dealers Sales Brochure for a quick look at the features of the car.Forty years ago, a dream car captured America's heart and wouldn't let go. From day one, the Chevrolet Corvette has represented the very best of American sports-car engineering ...