The third generation Chevrolet Corvette debuted in 1968. The C3, as its commonly called, was offered in either coupe or convertible body styles with several available engine configurations.
One of the most desirable options for the 1968 Corvette was the L89 option code. This led to what’s arguably one of the most balanced engines for this era of Corvette, with the L71 block receiving lightweight aluminum cylinder heads. This “big-block” option was factory rated at an impressive 435 horsepower.