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Oldsmobile 98 Engines by Year
The Ninety-Eight was Oldsmobile's flagship for more than fifty years, from the straight eight through the Rocket V8s to the front-drive 3800 era. Ratings are gross through 1971 and SAE net from 1972.
Pick a year to see every engine offered that model year, with its code, rated horsepower and the trims it came in. Each engine links to its full specs.
Jump to a year
gen1 (1941 (1941): 1941
gen2 (1942, 1946-1947 (1942–1947): 1942 · 1946 · 1947
gen3 (1948–1953): 1948 · 1949 · 1950 · 1951 · 1952 · 1953
gen4 (1954–1956): 1954 · 1955 · 1956
gen5 (1957–1958): 1957 · 1958
gen6 (1959–1960): 1959 · 1960
gen7 (1961–1964): 1961 · 1962 · 1963 · 1964
gen8 (1965–1970): 1965 · 1966 · 1967 · 1968 · 1969 · 1970
gen9 (1971–1976): 1971 · 1972 · 1973 · 1974 · 1975 · 1976
gen10 RWD (1977–1984): 1977 · 1978 · 1979 · 1980 · 1981 · 1982 · 1983 · 1984
gen11 FWD C-body (1984–1990): 1984 · 1985 · 1986 · 1987 · 1988 · 1989 · 1990
gen12 (1991–1996): 1991 · 1992 · 1993 · 1994 · 1995 · 1996
gen1 (1941 (1941)
1941 98 engines
Engine Rated Offered in 257 V8 — Custom Cruiser 98
gen2 (1942, 1946-1947 (1942–1947)
1942 98 engines
Engine Rated Offered in 257 V8 110 hp gross Custom Cruiser 98
1946 98 engines
Engine Rated Offered in 257 V8 110 hp gross Custom Cruiser 98
1947 98 engines
Engine Rated Offered in 257 V8 110 hp gross Custom Cruiser 98
gen3 (1948–1953)
1948 98 engines
Engine Rated Offered in 257 V8 — Futuramic 98
1949 98 engines
Engine Rated Offered in 303 V8 135 hp gross 98
1950 98 engines
Engine Rated Offered in 303 V8 135 hp gross 98
1951 98 engines
Engine Rated Offered in 303 V8 135 hp gross 98
1952 98 engines
Engine Rated Offered in 303 V8 160 hp gross Ninety-Eight
1953 98 engines
Engine Rated Offered in 303 V8 165 hp gross Ninety-Eight
gen4 (1954–1956)
1954 98 engines
Engine Rated Offered in 324 V8 185 hp gross Ninety-Eight, Starfire 98 convertible, Deluxe Holiday
1955 98 engines
Engine Rated Offered in 324 V8 202 hp gross Ninety-Eight, Starfire 98 convertible
1956 98 engines
Engine Rated Offered in 324 V8 240 hp gross Ninety-Eight, Starfire 98 convertible
gen5 (1957–1958)
1957 98 engines
Engine Rated Offered in 371 V8 — Starfire 98
1958 98 engines
Engine Rated Offered in 371 V8 305 hp gross Ninety-Eight 371 V8 312 hp gross Ninety-Eight (option)
gen6 (1959–1960)
1959 98 engines
Engine Rated Offered in 394 V8 315 hp gross Ninety-Eight
1960 98 engines
Engine Rated Offered in 394 V8 315 hp gross Ninety-Eight
gen7 (1961–1964)
1961 98 engines
Engine Rated Offered in 394 V8 325 hp gross Ninety-Eight
1962 98 engines
Engine Rated Offered in 394 V8 330 hp gross Ninety-Eight 394 V8 345 hp gross Ninety-Eight (option)
1963 98 engines
Engine Rated Offered in 394 V8 330 hp gross Ninety-Eight 394 V8 345 hp gross Ninety-Eight Custom Sports Coupe
1964 98 engines
Engine Rated Offered in 394 V8 330 hp gross Ninety-Eight 394 V8 345 hp gross Ninety-Eight Custom Sports Coupe, Other 98s (option)
gen8 (1965–1970)
1965 98 engines
Engine Rated Offered in 425 V8 360 hp gross Ninety-Eight
1966 98 engines
Engine Rated Offered in 425 V8 365 hp gross Ninety-Eight
1967 98 engines
Engine Rated Offered in 425 V8 365 hp gross Ninety-Eight
1968 98 engines
Engine Rated Offered in 455 V8 365 hp gross Ninety-Eight
1969 98 engines
Engine Rated Offered in 455 V8 365 hp gross Ninety-Eight
1970 98 engines
Engine Rated Offered in 455 V8 365 hp gross Ninety-Eight
gen9 (1971–1976)
1971 98 engines
Engine Rated Offered in 455 V8 320 hp gross Ninety-Eight
1972 98 engines
1973 98 engines
Engine Rated Offered in 455 V8 — Ninety-Eight
1974 98 engines
Engine Rated Offered in 455 V8 — Ninety-Eight
1975 98 engines
Engine Rated Offered in 455 V8 — Ninety-Eight
1976 98 engines
gen10 RWD (1977–1984)
1977 98 engines
1978 98 engines
1979 98 engines
1980 98 engines
1981 98 engines
1982 98 engines
1983 98 engines
1984 98 engines
gen11 FWD C-body (1984–1990)
1984 98 engines
1985 98 engines
1986 98 engines
Engine Rated Offered in 3.8L / 231 V6 (LG3) — Ninety-Eight Regency, Regency Brougham, Grande (1986), Touring Sedan (1987)
1987 98 engines
Engine Rated Offered in 3.8L / 231 V6 (LG3) — Ninety-Eight Regency, Regency Brougham, Grande (1986), Touring Sedan (1987)
1988 98 engines
Engine Rated Offered in 3.8L / 231 V6 (LN3) 165 hp net Ninety-Eight Regency, Regency Brougham, Touring Sedan
1989 98 engines
Engine Rated Offered in 3.8L / 231 V6 (LN3) 165 hp net Ninety-Eight Regency, Regency Brougham, Touring Sedan
1990 98 engines
Engine Rated Offered in 3.8L / 231 V6 (LN3) 165 hp net Ninety-Eight Regency, Regency Brougham, Touring Sedan
gen12 (1991–1996)
1991 98 engines
Engine Rated Offered in 3.8L / 231 V6 (L27) 170 hp net Regency, Regency Elite, Touring Sedan (1991-1992)
1992 98 engines
1993 98 engines
1994 98 engines
1995 98 engines
1996 98 engines
Engine Rated Offered in 3.8L / 231 V6 (L36) 205 hp net Regency, Regency Elite, Touring Sedan (1991-1992)
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