Chevrolet 250ci Specs: 3.875 x 3.53 in

Chevrolet 250ci specs: 3.875 x 3.53 in (98.4 x 89.7 mm) bore and stroke, shared by all 6 versions. Displacement, compression and factory ratings.

At a glance

Displacement	250 ci
Cylinders	6
Bore	3.875"
Stroke	3.530"
Compression	8.8–9.2:1
Advertised power	100–155 hp
Years	1966–1984
Cylinder head data	1 of 6 engines

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
Chevrolet 250ci · 3.875" × 3.530" · 8.801:1	250 ci	3.875" × 3.53"	8.801:1	100–110
Chevrolet 250ci (1975) · 105 hp	250 ci	3.875" × 3.53"	9.211:1	105
Chevrolet 250ci (1966–1978)	250 ci	3.875" × 3.53"	—	100–155
L22	250 ci	3.875" × 3.53"	—	105–155
LE3	250 ci	3.875" × 3.53"	—	115–130
LD4	250 ci	3.875" × 3.53"	—	100

Factory cars with a Chevrolet 250ci

• Chevrolet Bel Air: 1966, 155 hp; 1967, 155 hp; 1968, 155 hp; 1969, 155 hp; 1970, 155 hp; 1971, 145 hp; 1972, 110 hp; 1973, 100 hp
• Chevrolet C/K Pickup: 1966, 155 hp; 1967, L22, 155 hp; 1968, L22, 155 hp; 1969, L22, 155 hp; 1970, L22, 155 hp; 1971, L22, 145 hp; 1972, L22, 110 hp; 1973, 100 hp; 1974, 100 hp; 1975, 105 hp; 1976, 105 hp; 1977, 110 hp; 1978, 115 hp; 1979, LE3, 130 hp; 1980, LE3, 130 hp; 1981, LE3, 115 hp; 1982, LE3, 120 hp; 1983, LE3, 120 hp; 1984, LE3, 115 hp
• Chevrolet Impala: 1966, 155 hp; 1967, 155 hp; 1968, 155 hp; 1969, 155 hp; 1970, 155 hp; 1971, 145 hp; 1972, 110 hp; 1977, L22, 110 hp; 1978, L22, 110 hp; 1979, L22, 115 hp
• Chevrolet Suburban: 1966, 155 hp; 1967, 155 hp; 1968, 155 hp; 1969, 155 hp; 1970, 155 hp; 1971, 145 hp; 1972, 110 hp; 1973, 100 hp; 1974, 100 hp; 1975, 100 hp; 1976, 100 hp; 1977, 100 hp; 1978, 100 hp; 1979, LE3, 130 hp
• Chevrolet Camaro: 1967, L22, 155 hp; 1968, L22, 155 hp; 1969, L22, 155 hp; 1970, L22, 155 hp; 1971, L22, 145 hp; 1972, L22, 110 hp; 1973, L22, 100 hp; 1974, L22, 100 hp; 1975, L22, 105 hp; 1976, L22, 105 hp; 1977, L22, 110 hp; 1978, L22, 110 hp; 1979, L22, 115 hp
• Chevrolet Chevelle: 1967, L22, 155 hp; 1968, L22, 155 hp; 1969, L22, 155 hp; 1970, 155 hp; 1971, L22, 145 hp; 1972, L22, 110 hp; 1973, L22, 100 hp; 1975, L22, 105 hp; 1977, L22, 110 hp
• Chevrolet Nova: 1967, L22, 155 hp; 1968, L22, 155 hp; 1969, L22, 155 hp; 1970, L22, 155 hp; 1971, L22, 145 hp; 1972, L22, 110 hp; 1973, L22, 100 hp; 1974, L22, 100 hp; 1975, L22, 105 hp; 1976, L22, 105 hp; 1977, L22, 110 hp; 1978, L22, 110 hp; 1979, L22, 115 hp
• Buick Skylark: 1968, 155 hp; 1969, 155 hp; 1970, 155 hp; 1971, 145 hp
• Chevrolet El Camino: 1969, L22, 155 hp; 1970, 155 hp; 1971, L22, 145 hp; 1972, L22, 110 hp; 1975, L22, 105 hp; 1976, L22, 105 hp; 1977, L22, 110 hp
• Chevrolet K5 Blazer: 1969, L22, 155 hp; 1970, L22, 155 hp; 1971, L22, 145 hp; 1972, L22, 110 hp; 1973, L22, 100 hp; 1975, LD4, 105 hp; 1976, LD4, 100 hp; 1977, LD4, 100 hp; 1978, LD4, 100 hp
• Chevrolet Caprice: 1977, L22, 110 hp; 1978, L22, 110 hp; 1979, L22, 115 hp

What varies across the family

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.

← All Chevrolet engines