Dodge 318ci Engine Specs

Bore, stroke, displacement and compression for all 13 Dodge 318ci engines, compared side by side. Plus rod ratio and head specs where published.

At a glance

Displacement	318 ci
Cylinders	8
Bore	3.909–3.910"
Stroke	3.311–3.313"
Advertised power	135–260 hp
Years	1960–1999

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
G	318 ci	3.9094" × 3.311"	—	150–230
318 2-bbl	318 ci	3.9094" × 3.311"	—	145–230
LA 318 2-bbl	318 ci	3.9094" × 3.311"	—	230
318 2-bbl Lean Burn	318 ci	3.9094" × 3.311"	—	140
Dodge 318ci (1960–1980)	318 ci	3.9094" × 3.311"	—	135–260
4-bbl	318 ci	3.9094" × 3.311"	—	165–167
2-bbl	318 ci	3.9094" × 3.311"	—	135–150
TBI	318 ci	3.91" × 3.313"	—	170
Magnum 5.2	318 ci	3.9094" × 3.311"	—	220–230
LA 5.2	318 ci	3.91" × 3.313"	—	170
LA 318	318 ci	3.9094" × 3.311"	—	135–150
LA 318 4-bbl	318 ci	3.9094" × 3.311"	—	167
LA 318 EFI	318 ci	3.91" × 3.313"	—	170

Factory cars with a Dodge 318ci

• Dodge Dart: 1960, 230 hp; 1960, 255 hp; 1961, 230 hp; 1961, 260 hp; 1962, 230 hp; 1962, 260 hp; 1968, 230 hp; 1969, 230 hp; 1970, 230 hp; 1971, 230 hp; 1972, 150 hp; 1973, 150 hp; 1974, 150 hp; 1975, 145 hp; 1976, 150 hp
• Dodge D-Series Pickup: 1962, 200 hp; 1963, 200 hp; 1964, 200 hp; 1965, 200 hp; 1966, 200 hp; 1967, 210 hp; 1970, 210 hp; 1971, 210 hp; 1972, 150 hp; 1973, 150 hp; 1974, 150 hp; 1975, 150 hp; 1976, 150 hp; 1977, 150 hp; 1978, 150 hp; 1979, 150 hp; 1980, 135 hp; 1981; 1981, 135 hp; 1982, 135 hp; 1983, 150 hp; 1983, 167 hp; 1984; 1985; 1986, 145 hp; 1986, 165 hp; 1987, 145 hp; 1988, 170 hp; 1990, 170 hp; 1991, 170 hp; 1992, 230 hp; 1993, 230 hp
• Dodge Coronet: 1965, 230 hp; 1966, 230 hp; 1967, 230 hp; 1968, 230 hp; 1969, 230 hp; 1970, 230 hp; 1971, 230 hp; 1972, 150 hp; 1973, 150 hp; 1974, 150 hp; 1975, 150 hp; 1976, 150 hp
• Dodge Charger: 1966, 230 hp; 1967, 230 hp; 1968, 230 hp; 1969, 230 hp; 1970, 230 hp; 1971, 230 hp; 1972, 150 hp; 1973, 150 hp; 1974, 150 hp; 1975, 150 hp; 1976, 150 hp; 1977, 135–145 hp; 1978, 140 hp
• Dodge Challenger: 1970, 230 hp; 1971, 230 hp; 1972, 150 hp; 1973, 150 hp; 1974, 150 hp
• Dodge Ramcharger: 1976, 150 hp; 1977, 150 hp; 1978, 150 hp; 1979, 150 hp; 1980, 135 hp; 1981; 1981, 135 hp; 1982, 135 hp; 1983, 167 hp; 1988, 170 hp; 1989, 170 hp; 1990, 170 hp; 1991, 170 hp; 1992, 230 hp; 1993, 230 hp
• Dodge Magnum: 1978, 140 hp; 1979, 135 hp
• Dodge Dakota: 1991, 170 hp; 1992, 230 hp; 1993, 230 hp; 1994, 220 hp; 1995, 220 hp; 1996, 220 hp; 1997, 230 hp; 1998, 230 hp; 1999, 230 hp
• Dodge Durango: 1998, 230 hp; 1999, 230 hp

What varies across the family

Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.

All are oversquare — bore larger than stroke, which favours revs over low-end torque.

Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.

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