Chevrolet 350ci Engine Specs

Bore, stroke, displacement and compression for all 34 Chevrolet 350ci engines, compared side by side. Plus rod ratio and head specs where published.

At a glance

Displacement	350 ci
Cylinders	8
Bore	4.001–4.125"
Stroke	3.270–3.484"
Compression	9.9–22.5:1
Advertised power	105–630 hp
Years	1967–2023
Cylinder head data	12 of 34 engines

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
Chevrolet 350ci · 4.001" × 3.484" · 10.001:1	350 ci	4.001" × 3.484"	10.001:1	165–270
Chevrolet 350ci · 4.001" × 3.484" · 10.301:1	350 ci	4.001" × 3.484"	10.301:1	205–330
Chevrolet 350ci · 4.001" × 3.484" · 10.201:1	350 ci	4.001" × 3.484"	10.201:1	145–195
Chevrolet 350ci (1985) · 105 hp	350 ci	4.057" × 3.385"	22.5:1	105
Chevrolet 350ci (1988) · 230 hp	350 ci	4.001" × 3.484"	10.22:1	230
Chevrolet 350ci (1989) · 240 hp	350 ci	4.001" × 3.484"	11.53:1	240
Chevrolet 350ci · 4.001" × 3.484" · 12.26:1	350 ci	4.001" × 3.484"	12.26:1	247–250
Chevrolet 350ci · 4.001" × 3.484" · 10.75:1	350 ci	4.001" × 3.484"	10.75:1	245
Chevrolet 350ci (1990) · 250 hp	350 ci	4.001" × 3.484"	12.2:1	250
Chevrolet 350ci · 4.001" × 3.484" · 10.5:1	350 ci	4.001" × 3.484"	10.5:1	275–300
Chevrolet 350ci · 4.001" × 3.484" · 10.1:1	350 ci	4.001" × 3.484"	10.1:1	260
Chevrolet 350ci · 4.001" × 3.484" · 9.9:1	350 ci	4.001" × 3.484"	9.9:1	275–300
Chevrolet 350ci (1996) · 300 hp	350 ci	4.001" × 3.484"	10.4:1	300
Chevrolet 350ci (1996) · 330 hp	350 ci	4.001" × 3.484"	10.8:1	330
Chevrolet 350ci (2013) · 350 hp	350 ci	4.125" × 3.27"	11.8:1	350
Chevrolet 350ci · 4.065" × 3.370" · 12.5:1	350 ci	4.065" × 3.37"	12.5:1	530–630
Chevrolet 350ci · 4.065" × 3.370" · 11.8:1	350 ci	4.065" × 3.37"	11.8:1	350
LM1	350 ci	4.001" × 3.484"	—	160–255
L48	350 ci	4.001" × 3.484"	—	180–300
Chevrolet 350ci (1969–1978)	350 ci	4.001" × 3.484"	—	155–300
LS9	350 ci	4.001" × 3.484"	—	155–255
L05	350 ci	4.001" × 3.484"	—	180–210
L31	350 ci	4.001" × 3.484"	—	250–255
L65	350 ci	4.001" × 3.484"	—	145–250
LT-1	350 ci	4.001" × 3.484"	—	360–370
L98	350 ci	4.001" × 3.484"	—	225–240
LT1	350 ci	4.001" × 3.484"	—	285–360
base V8	350 ci	4.001" × 3.484"	—	250
L46	350 ci	4.001" × 3.484"	—	350
L82	350 ci	4.001" × 3.484"	—	210–230
L81	350 ci	4.001" × 3.484"	—	190
L83	350 ci	4.001" × 3.484"	—	200–205
LT5	350 ci	4.001" × 3.484"	—	375–405
LO5	350 ci	4.001" × 3.484"	—	210

Factory cars with a Chevrolet 350ci

Chevrolet Camaro: 1967, L48, 295 hp; 1968, L48, 295 hp; 1969, L65, 250 hp; 1969, LM1, 255 hp; 1969, L48, 300 hp; 1970, L65, 250 hp; 1970, L48, 300 hp; 1970, LT-1, 360 hp; 1971, L65, 245 hp; 1971, L48, 270 hp; 1971, LT-1, 330 hp; 1972, L65, 165 hp; 1972, L48, 200 hp; 1972, LT-1, 255 hp; 1973, L65, 145 hp; 1973, L48, 175 hp; 1973, Z28, 245 hp; 1974, L65, 145 hp; 1974, LM1, 160 hp; 1974, L48, 185 hp; 1974, Z28, 245 hp; 1975, L65, 145 hp; 1975, LM1, 155 hp; 1976, LM1, 165 hp; 1977, LM1, 170 hp; 1977, LM1, 185 hp; 1978, LM1, 170 hp; 1978, LM1, 175 hp; 1978, LM1, 185 hp; 1979, LM1, 170 hp; 1979, LM1, 175 hp; 1980, LM1, 190 hp; 1981, LM1, 175 hp; 1987, L98, 225 hp; 1988, L98, 230 hp; 1989, L98, 230 hp; 1989, L98, 240 hp; 1990, L98, 245 hp; 1991, L98, 245 hp; 1992, L98, 245 hp; 1993, LT1, 275 hp; 1994, LT1, 275 hp; 1995, LT1, 275 hp; 1996, LT1, 285 hp; 1997, LT1, 285 hp
Chevrolet Nova: 1968, L48, 295 hp; 1969, L65, 250 hp; 1969, LM1, 255 hp; 1969, L48, 300 hp; 1970, L65, 250 hp; 1970, L48, 300 hp; 1970, LT1, 360 hp; 1971, L65, 245 hp; 1971, L48, 270 hp; 1972, L65, 165 hp; 1972, L48, 200 hp; 1973, L65, 145 hp; 1973, L48, 175 hp; 1974, L65, 145 hp; 1974, LM1, 160 hp; 1974, L48, 185 hp; 1975, L65, 145 hp; 1975, LM1, 155 hp; 1976, LM1, 165 hp; 1977, LM1, 170 hp; 1978, LM1, 160 hp; 1979, LM1, 165 hp
Chevrolet Bel Air: 1969, LM1, 255 hp; 1969, L48, 300 hp; 1970, 250 hp; 1970, L48, 300 hp
Chevrolet C/K Pickup: 1969, 255 hp; 1970, 255 hp; 1971, 250 hp; 1972, LS9, 175 hp; 1973, 155 hp; 1974, 145 hp; 1974, 160 hp; 1975, 145 hp; 1975, 160 hp; 1976, 165 hp; 1977, 165 hp; 1978, 165 hp; 1979, LS9, 165 hp; 1980, LS9, 175 hp; 1983, LS9, 165 hp; 1984, LS9, 165 hp; 1985, LS9, 165 hp; 1986, LS9, 165 hp; 1987, L05, 210 hp; 1988, L05, 210 hp; 1989, L05, 210 hp; 1990, L05, 210 hp; 1991, L05, 210 hp; 1992, L05, 210 hp; 1993, L05, 210 hp; 1994, L05, 200 hp; 1995, L05, 200 hp; 1996, L31, 250 hp; 1997, L31, 255 hp; 1998, L31, 255 hp
Chevrolet Caprice: 1969, L65, 250 hp; 1969, LM1, 255 hp; 1969, L48, 300 hp; 1970, 250 hp; 1970, L48, 300 hp; 1975, L65, 145 hp; 1975, LM1, 155 hp; 1976, L65, 145 hp; 1976, LM1, 165 hp; 1977, LM1, 170 hp; 1978, LM1, 170 hp; 1979, LM1, 170 hp; 1985, LF9, 105 hp; 1986, LM1; 1987, LM1, 180 hp; 1988, LM1; 1989, L05; 1990, L05, 195 hp; 1991, L05, 195 hp; 1992, L05; 1992, L05, 205 hp; 1993, L05, 180 hp; 1993, L05, 205 hp; 1994, LT1, 260 hp; 1995, LT1, 260 hp; 1996, LT1, 260 hp
Chevrolet Chevelle: 1969, L65, 250 hp; 1969, LM1, 255 hp; 1969, L48, 300 hp; 1970, L65, 250 hp; 1970, L48, 300 hp; 1971, L65, 245 hp; 1971, L48, 270 hp; 1972, L65, 165 hp; 1972, L48, 175 hp; 1973, L65, 145 hp; 1973, L48, 175 hp; 1974, L65, 145 hp; 1974, LM1, 160 hp; 1975, L65, 145 hp; 1975, LM1, 155 hp; 1976, L65, 145 hp; 1976, LM1, 165 hp; 1977, LM1, 170 hp
Chevrolet Corvette: 1969, 300 hp; 1969, L46, 350 hp; 1970, 300 hp; 1970, L46, 350 hp; 1970, LT-1, 370 hp; 1971, 270 hp; 1971, LT-1, 330 hp; 1972, 200 hp; 1972, LT-1, 255 hp; 1973, L48, 190 hp; 1973, L82, 250 hp; 1974, L48, 195 hp; 1974, L82, 250 hp; 1975, L48, 165 hp; 1975, L82, 205 hp; 1976, L48, 180 hp; 1976, L82, 210 hp; 1977, L48, 180 hp; 1977, L82, 210 hp; 1978, L48, 185 hp; 1978, L82, 220 hp; 1979, L48, 195 hp; 1979, L82, 225 hp; 1980, L48, 190 hp; 1980, L82, 230 hp; 1981, L81, 190 hp; 1982, L83, 200 hp; 1984, L83, 205 hp; 1985, L98, 230 hp; 1986, L98, 230 hp; 1987, L98, 240 hp; 1988, L98, 240 hp; 1989, L98, 240 hp; 1990, L98, 245 hp; 1990, LT5, 375 hp; 1991, L98, 245 hp; 1991, LT5, 375 hp; 1992, LT1, 300 hp; 1992, LT5, 375 hp; 1993, LT1, 300 hp; 1993, LT5, 405 hp; 1994, LT1, 300 hp; 1994, LT5, 405 hp; 1995, LT1, 300 hp; 1995, LT5, 405 hp; 1996, LT1, 300 hp; 1996, LT4, 330 hp
Chevrolet El Camino: 1969, L65, 250 hp; 1969, LM1, 255 hp; 1969, L48, 300 hp; 1970, L65, 250 hp; 1970, L48, 300 hp; 1971, L65, 245 hp; 1971, L48, 270 hp; 1972, L65, 165 hp; 1972, L48, 175 hp; 1973, L65, 145 hp; 1973, L48, 175 hp; 1974, L65, 145 hp; 1974, LM1, 160 hp; 1975, L65, 145 hp; 1975, LM1, 155 hp; 1976, L65, 145 hp; 1976, LM1, 165 hp; 1977, LM1, 170 hp; 1978, LM1, 170 hp; 1979, LM1, 165 hp
Chevrolet Impala: 1969, LM1, 255 hp; 1969, L48, 300 hp; 1970, 250 hp; 1970, L48, 300 hp; 1971, 245 hp; 1972, 165 hp; 1973, 145 hp; 1973, L48, 175 hp; 1974, 145 hp; 1974, LM1, 160 hp; 1975, 145 hp; 1975, LM1, 155 hp; 1976, L65, 145 hp; 1976, LM1, 165 hp; 1977, LM1, 170 hp; 1978, LM1, 170 hp; 1979, LM1, 170 hp; 1985, LF9, 105 hp; 1994, LT1, 260 hp; 1995, LT1, 260 hp; 1996, LT1, 260 hp
Chevrolet K5 Blazer: 1969, LS9, 255 hp; 1970, LS9, 255 hp; 1971, LS9, 250 hp; 1972, LS9, 175 hp; 1974, 145 hp; 1974, LS9, 160 hp; 1975, L65, 145 hp; 1975, LS9, 160 hp; 1976, LS9, 165 hp; 1977, LS9, 165 hp; 1978, LS9; 1979, LS9; 1981, LS9; 1982, LS9, 160 hp; 1984, LS9, 165 hp; 1985, LS9, 165 hp; 1986, LS9, 165 hp; 1987, LO5, 210 hp; 1988, LO5, 210 hp; 1989, LO5, 210 hp; 1990, LO5, 210 hp; 1991, LO5, 210 hp; 1992, L05, 210 hp; 1993, L05, 210 hp; 1994, L05, 210 hp
Chevrolet Suburban: 1969, 255 hp; 1970, 255 hp; 1971, 250 hp; 1972, 175 hp; 1973, 155 hp; 1974, 160 hp; 1975, 160 hp; 1976, 165 hp; 1977, 165 hp; 1978, 165 hp; 1979, LS9, 165 hp; 1980, LS9, 170 hp; 1981, LS9; 1982, LS9, 165 hp; 1983, LS9, 165 hp; 1984, LS9, 165 hp; 1985, LS9, 165 hp; 1986, LS9, 165 hp; 1987, L05, 210 hp; 1988, L05, 210 hp; 1989, L05, 210 hp; 1990, L05, 210 hp; 1991, L05, 210 hp; 1992, L05, 210 hp; 1993, L05, 210 hp; 1994, L05, 200 hp; 1995, L05, 200 hp; 1996, L31, 250 hp; 1997, L31, 255 hp; 1998, L31, 255 hp; 1999, L31, 255 hp
Chevrolet Monte Carlo: 1970, 250 hp; 1970, L48, 300 hp; 1971, 245 hp; 1971, L48, 270 hp; 1972, 165 hp; 1972, L48, 175 hp; 1973, 145 hp; 1973, L48, 175 hp; 1974, L65, 145 hp; 1974, LM1, 160 hp; 1975, L65, 145 hp; 1975, LM1, 155 hp; 1976, L65, 145 hp; 1976, LM1, 165 hp; 1977, LM1, 170 hp
GMC Jimmy: 1970, LS9, 255 hp; 1971, LS9, 250 hp; 1972, LS9, 175 hp; 1973, LS9, 155 hp; 1974, 145 hp; 1974, LS9, 160 hp; 1975, L65, 145 hp; 1975, LS9, 160 hp; 1978, LS9, 165 hp; 1983, LS9, 165 hp; 1985, LS9, 165 hp; 1986, LS9, 165 hp; 1987, L05, 210 hp; 1988, L05, 210 hp; 1989, L05, 210 hp; 1990, L05, 210 hp; 1991, L05, 210 hp
Buick Skylark: 1978, LM1, 160 hp
Pontiac Firebird: 1978, LM1, 170 hp; 1979, LM1, 160–170 hp
Pontiac LeMans: 1979, LM1, 165 hp
GMC Sierra 1500: 1988, L05, 210 hp; 1989, L05, 210 hp; 1990, L05, 210 hp; 1991, L05, 210 hp; 1992, L05, 210 hp; 1993, L05, 210 hp; 1994, L05; 1995, L05, 200 hp
Chevrolet Tahoe: 1995, L05, 200 hp; 1996, L31; 1997, L31, 255 hp; 1998, L31, 255 hp; 1999, L31, 255 hp; 2000, L31, 255 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.

Compression spans 9.9:1 to 22.5:1, so fuel requirements differ meaningfully between members — worth checking before assuming parts interchange.

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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