1971 through 1974. Towards the end of the HQ series in 1973–74, due to US emissions regulations, the performance of these engines had dropped to the same or lower than Holden's locally manufactured V8, which was not yet subject to similar regulations, so Holden discontinued using the engine. The L48 V8 was the standard engine in the 1975–1980 Chevrolet Corvette. The L48 V8 Corvette engine produced in 1975. Power increased to in 1976 and stayed the same in 1977. The 1978 saw for California or high altitude areas and for everywhere else. Power increased to in 1979 and decreased to in 1980. L65 The 1970 model year Camaro had a 250HP High Performance 2bbl Rochester carburetor. In 1971, it dropped to 245HP; 1972 it had 165 net HP, while 1973-1975 had 145 net HP. It was basically the 2bbl version of the L48 350. It was produced until the 1976 model year. It had 255 lb/ft (346 nm) of torque. LM1 The LM1 is the base 350 cu in with a 4-barrel carburetor (usually with a Rochester Quadrajet) engine in passenger cars to 1979 as a retail option (its final use in a retail passenger car was the 1981 Camaro Z28) and police package 9C1 A/G (Malibu to 1981) and B-bodies (Caprice, Impala) until 1988 retail market GM rear wheel drive/V8s sold to the general public had a maximum 5.0 liters displacement with the exception of its muscle car survivors e.g. Corvette and F-bodies (Camaro IROC Z or Trans Am). Throughout its lifespan, it used mechanical ignition points, electronic, or computer-controlled spark system, and conventional or feedback carburetors. The LM1 was superseded by the L05 powerplant after 1988. The LM1 was first introduced for 1969 model year as a 9.0:1 255 hp engine. It was essentially an L48 engine in all ways except for 75cc combustion chambers rather than the L48's 64cc, and less spark advance to allow it to run on regular grade fuel. It was replaced at the end of December 1968 by the L65 and re-appeared again in the 1970's. This engine was fitted to automatic versions of the 1969 and 1970 Holden Monaro GTS350 in Australia where it was rated at 275 hp most likely due to the use of higher octane fuel and far more spark advance than was fitted to North American versions of the engine. ZQ3 Years: 1969-1974 The ZQ3 is the standard