Chrysler Imperial Engines by Year

The Imperial was Chrysler's top car, a Chrysler model until 1954 and a separate make from 1955 to 1975. It used the FirePower Hemi, the 413 wedge from 1959 and the 440 from 1966. 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

1951–1954: 1951 · 1952 · 1953 · 1954

1955–1956: 1955 · 1956

1957–1958: 1957 · 1958

1959–1966: 1959 · 1960 · 1961 · 1962 · 1963 · 1964 · 1965 · 1966

1967–1968: 1967 · 1968

1969–1973: 1969 · 1970 · 1971 · 1972 · 1973

1974–1975: 1974 · 1975

1951–1954

1951 Imperial engines

Engine	Rated	Offered in
331 V8 FirePower V-8	180 hp gross	Chrysler Imperial, Crown Imperial

1952 Imperial engines

Engine	Rated	Offered in
331 V8 FirePower V-8	180 hp gross	Chrysler Imperial, Crown Imperial

1953 Imperial engines

Engine	Rated	Offered in
331 V8 FirePower V-8	180 hp gross	Chrysler Imperial, Crown Imperial

1954 Imperial engines

Engine	Rated	Offered in
331 V8 FirePower V-8	235 hp gross	Chrysler Imperial, Crown Imperial

1955–1956

1955 Imperial engines

Engine	Rated	Offered in
331 V8 FirePower V-8	250 hp gross	Imperial, Crown Imperial

1956 Imperial engines

Engine	Rated	Offered in
354 V8 FirePower V-8	280 hp gross	Imperial, Imperial Southampton, Crown Imperial

1957–1958

1957 Imperial engines

Engine	Rated	Offered in
392 V8 (392 Hemi)	325 hp gross	Imperial, Imperial Crown, Imperial LeBaron, Crown Imperial

1958 Imperial engines

Engine	Rated	Offered in
392 V8 (392 Hemi)	345 hp gross	Imperial, Imperial Crown, Imperial LeBaron, Crown Imperial

1959–1966

1959 Imperial engines

Engine	Rated	Offered in
392 V8 (392 Hemi)	—	Crown Imperial (Ghia-built limousine)
413 V8 RB 413	350 hp gross	Imperial Custom, Imperial Crown, Imperial LeBaron

1960 Imperial engines

Engine	Rated	Offered in
413 V8 RB 413	350 hp gross	Imperial Custom, Imperial Crown, Imperial LeBaron, Crown Imperial

1961 Imperial engines

Engine	Rated	Offered in
413 V8 RB 413	350 hp gross	Imperial Custom, Imperial Crown, Imperial LeBaron, Crown Imperial

1962 Imperial engines

Engine	Rated	Offered in
413 V8 RB 413	340 hp gross	Imperial Custom, Imperial Crown, Imperial LeBaron, Crown Imperial

1963 Imperial engines

Engine	Rated	Offered in
413 V8 RB 413	340 hp gross	Imperial Custom, Imperial Crown, Imperial LeBaron, Crown Imperial

1964 Imperial engines

Engine	Rated	Offered in
413 V8 RB 413	340 hp gross	Imperial Custom, Imperial Crown, Imperial LeBaron, Crown Imperial

1965 Imperial engines

Engine	Rated	Offered in
413 V8 RB 413	340 hp gross	Imperial Crown, Imperial LeBaron, Crown Imperial

1966 Imperial engines

Engine	Rated	Offered in
440 V8 RB 440	350 hp gross	Imperial Crown, Imperial LeBaron, Crown Imperial

1967–1968

1967 Imperial engines

Engine	Rated	Offered in
440 V8 RB 440	350 hp gross	Imperial Crown, Imperial LeBaron, Crown Imperial

1968 Imperial engines

Engine	Rated	Offered in
440 V8 RB 440	350 hp gross	Imperial Crown, Imperial LeBaron, Crown Imperial

1969–1973

1969 Imperial engines

Engine	Rated	Offered in
440 V8 RB 440	350 hp gross	Imperial Crown, Imperial LeBaron, Crown Imperial

1970 Imperial engines

Engine	Rated	Offered in
440 V8 RB 440	350 hp gross	Imperial Crown, Imperial LeBaron, Crown Imperial

1971 Imperial engines

Engine	Rated	Offered in
440 V8 RB 440	335 hp gross	Imperial LeBaron

1972 Imperial engines

Engine	Rated	Offered in
440 V8 RB 440	225 hp net	Imperial LeBaron

1973 Imperial engines

Engine	Rated	Offered in
440 V8 RB 440	215 hp net	Imperial LeBaron

1974–1975

1974 Imperial engines

Engine	Rated	Offered in
440 V8 RB 440	—	Imperial LeBaron

1975 Imperial engines

Engine	Rated	Offered in
440 V8 RB 440	—	Imperial LeBaron

Working on one of these engines?

• Engine displacement from bore and stroke
• Static and dynamic compression ratio
• Which camshaft for your build
• What size carburetor
• Horsepower to torque at any RPM
• Torque converter stall speed

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