Chevrolet’s introduction of the LT1 in 1992 as the base engine in the Corvette phased out the L98-based Callaway Twin Turbo.
Callaway’s SuperNatural® engines succeeded the Twin Turbo, employing tuned, unboosted, “natural” aspiration principles in the engine design. They were based on both the pushrod 2-valve LT1 as well as the ZR1′s overhead cam, 4-valve LT5. The SuperNatural® engines adhered to Callaway’s doctrine of high power, compliant emissions, and extended durability for everyday road use.
SuperNatural® Corvettes were not only equipped with remarkable engines, Callaway also engineered a series of
performance and appearance enhancements for these cars, positioning the SuperNatural Corvette as one of the premier
high performance road cars in the world.
Callaway successfully competed at Le Mans in 1995 through 1997 with a SuperNatural® Corvette race car, achieving pole
position. A limited production run of a road car version of the Le Mans SuperNatural® Corvette was also released.
SuperNatural® Corvette race car and limited edition “LM”-bodied road car are pictured above.