103 mm by 90 mm), the L34 and LF9 from the 1980s . ZQ3 Years: 1969, 1970, 1972-1975 The ZQ3 was the standard engine in the 1969-1970 Chevrolet Corvette . It was a 300 hp (224 kW) version of the 350 in³ (5.7 L) small-block, with 10.25:1 compression and hydraulic lifters. It used a Rochester "4MV" Quadra-Jet