SUVs, Vans 1978–1987 Buick Regal 1975–1979 Buick Skylark 1991–1992 Cadillac Brougham 1977–1981 Checker Marathon 1991–1992 Oldsmobile Custom Cruiser 1977 Oldsmobile Omega 1978–1980 Oldsmobile Cutlass (U.S. market only, Canadian market 1978–1987) 1977–1981 Pontiac Catalina (B-body) 1977–1981 Pontiac Bonneville (B-body) 1982–1986 Pontiac Bonneville (G-body) 1977–1992 Pontiac Firebird 1981–1987 Pontiac Grand Prix 1978–1981 Pontiac Grand LeMans (A/G-body, includes Grand Am) 1982–1986 Pontiac Parisienne (B-body) 1982–1986 Pontiac Parisienne Safari (B-body wagon) 1979 Pontiac Sunbird The Chevrolet 305 is a reliable, fuel efficient V8, easily capable of 200,000 miles, if maintained. From 1976 onward into the early 1980s, these engines were prone to wearing out their camshaft lobes prematurely due to a combination of improper manufacturing and poor quality controls (a result of GM cost-cutting measures). The 305 is sometimes dismissed in performance circles because of its lackluster performance, small bore size, and difficulty flowing large volumes of air at high RPM. However, two variants of the 1983 to 1992 305 were notable performers: the 1983 to 1988 L69 High Output 5.0L (only used in late 1983 to early 1986 F-body and late 1983 to 1988 Monte Carlo SS) and the 1985 to 1992 LB9 Tuned Port Injection 5.0L (F-body only). After 1993, its usage was limited to light trucks and SUVs until the 2000 model year while vans and commercial vehicles continued until 2003. The 305 was sold as a crate motor under the Mr. Goodwrench brand as a replacement motor and as a boat engine for Mercury Marine until late 2014 when it was discontinued. The cylinder block is still in production by GM (part number 10243869) for Sprint Car Spec Racing. LG3 The first iteration of the 305, the LG3 was introduced in 1976. This variant used a Rochester 2GC carburetor from 1976 to 1978. In 1979, the more fuel-efficient Rochester Dual-Jet 2bbl carburetor replaced the older 2GC. This change also resulted in a drop in power to and for California emissions cars. All years had an 8.5:1 compression ratio. It was discontinued in 1982. LG4 The LG4 produced and . Introduced in 1978, the LG4 was essentially an LG3 with the addition of a 4-bbl carburetor and larger valves. The engine saw a series of gradual improvements, increasing reliability, mpg, and power output through its production run. In 1981 (1980 for California models) Chevrolet added GM's new "Computer Command Control" (CCC) engine management system to the LG4 engines (except Canadian models).