Chevrolet small-block engine | |
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Overview | |
Manufacturer | General Motors |
Also called | Chevrolet Turbo-Fire Mighty Mouse |
Production | 1955–2003 |
Layout | |
Configuration | 90° V8 |
Displacement | 262 cu in (4.3 L) (1975-1976) 265 cu in (4.3 L) (1955-1957) 267 cu in (4.4 L) (1979-1982) 283 cu in (4.6 L) (1957-1967) 302 cu in (4.9 L) (1967-1969) 305 cu in (5.0 L) (1976-2002) 307 cu in (5.0 L) (1968-1973) 327 cu in (5.4 L) (1962-1969) 350 cu in (5.7 L) (1967-2003) 400 cu in (6.6 L) (1970-1981) |
Cylinder bore | 3.5 in (88.9 mm) 3.67 in (93.2 mm) 3.736 in (94.9 mm) 3.75 in (95.3 mm) 3.875 in (98.4 mm) 4 in (101.6 mm) 4.125 in (104.8 mm) |
Piston stroke | 3 in (76.2 mm) 3.1 in (78.7 mm) 3.25 in (82.6 mm) 3.48 in (88.4 mm) 3.75 in (95.3 mm) |
Block material | Cast iron, Aluminum |
Head material | Cast iron, Aluminum |
Valvetrain | OHV 2 valves x cyl. DOHC4 valves x cyl. (LT5) |
Compression ratio | 8.2:1, 8.3:1, 8.4:1, 8.5:1, 8.6:1, 9.0:1, 9.1:1, 9.5:1, 10.25:1, 11.0:1 |
RPM range | |
Redline | 6500 |
Combustion | |
Fuel system | Carburetor, Fuel injection |
Fuel type | Gasoline |
Cooling system | Water cooled |
Output | |
Power output | 110–475 hp (82–354 kW) |
Torque output | 215–400 lb⋅ft (292–542 N⋅m) |
Chronology | |
Predecessor | Chevrolet Series D |
Successor | Gen III-V GM small-block engine |
Gen I | Years | Engine option code (VIN identifier) | Power (hp) | Torque (lb.-ft.) | Displacement (c.i.) | Fuel (octane) | Bore x Stroke (in) | Compression ratio | Block & heads (iron or aluminum) | Block features |
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I | 1996-02 | L30 (M) | 220@4600 | 290@2800 | 305 | 3.736 x 3.48 | 9.1:1 | Iron | Truck/van only | |
I | 1987-95 | L03 (E/H) | 170@4400 | 255@2400 | 305 | 3.736 x 3.48 | 9.1:1 | Iron | TBI; passenger car used roller cam | |
I | 1988-96 | L05 (K) | 210@4400 | 300@2800 | 350 | 4.0 x 3.48 | 9.3:1 | Iron | TBI; 9C1 optioned Caprice and F-bodies had hydraulic roller cam | |
I | 1978-88 | LG4 (F/H) | 150-170@4600 | 240-250@2800 | 305 | 3.736 x 3.48 | 8.6:1 | Iron | 4bbl Quadrajet | |
I | 1981-86 | LE9 (F) | 165@4400 | 240@2000 | 305 | 3.736 x 3.48 | 9.5:1 | Iron | Truck/Van only - electronic spark control module used | |
I | 1982-83 | LU5 | 165-175 | 305 | 3.736 x 3.48 | ?:1 | Iron | 'Crossfire EFI 5.0L' | ||
I | 1967-80 | L48 (K) | 165-195 | 380 | 350 | 4.0 x 3.48 | 8.25-10.5:1 | Iron | ||
I | 1969-70 | L46 | 350 | 350 | 93req | 4.0 x 3.48 | 11.0:1 | Iron | Corvette only | |
I | 1969-76 | L65 | 145 | 350 | 4.0 x 3.48 | Iron | 2bbl | |||
I | 1969-88 | LM1 (L) | 155-175 | 350 | 4.0 x 3.48 | Iron | 4bbl Rochester Quadrajet (4MV, M4MC, E4ME); retail option until 1981 when last used with the Camaro Z28; post-1980 use of the LM1 was for 9C1-optioned B (Caprice, Impala) and G-bodies (Malibu) | |||
I | 1970-74 | ZQ3 | 190-300 | 270-300 | 350 | 4.0 x 3.48 | 8.5-10.25:1 | Iron | 4bbl, Corvette. L48 camshaft | |
I | 1970-72 | LT1 | 250-370@6000 | 270-300@4000 | 350 | 4.0 x 3.48 | 9.1:1 | Iron | 4bbl | |
II | 1992-97 | LT1 (P) | 260-305@4800-5200 | 325-340@2400-3400 | 350 | 91 OCTANE | 4.0 x 3.48 | 10.4:1 | Iron (Aluminum FOR F and Y Bodies) | Reverse Flow Heads |
I | 1973-80 | L82 | 205-250 | 255-285 | 350 | 4.0 x 3.48 | 9:1 | Iron | 4bbl Rochester Quadrajet; flat top pistons with a D-shaped relief cut for valve clearance | |
I | 1981 | L81 | 190 | 280 | 350 | 4.0 x 3.48 | 8.2:1 | Iron | 4bbl Rochester Quadrajet (E4ME), Corvette | |
I | 1970-86 | LS9 (L) | 165@3800 | 275@1600 | 350 | 4.0 x 3.48 | 8.2:1 | Iron | 4bbl, truck | |
I | 1981-86 | LT9 (M) | 160@3800 | 250@2800 | 350 | 4.0 x 3.48 | 8.3:1 | Iron | 4bbl, truck | |
I | 1982-84 | L83 | 200-205 | 285-290 | 350 | 4.0 x 3.48 | 9.0:1 | Iron | CrossFire | |
I | 1985-92 | L98 (8) | 225-250@4000 | 330-345@3200 | 350 | 4.0 x 3.48 | 9.5-10:1 | Iron/Aluminum (Corvette) | TPI | |
I | 1996-02 | L31 (R) | 255-350@4600 | 330-350@2800 | 350 | 4.0 x 3.48 | Iron | truck, Vortec | ||
I | 1970-80 | 245-265 | 400 | 4.125 x 3.75 | Iron | 70-72 4bolt main, 73-80 2bolt main | ||||
I | 1975-76 | 110 | 133@3600 | 262 | 3.671 x 3.1 | Iron | Nova and Monza only; 2bbl Rochester 2GC carburetor | |||
I | 1994-96 | L99 (W) | 200 | 245 | 262 | 3.736 x 3.0 | Iron | reverse cooling, Caprice, special ops, police vehicles | ||
I | 1983-88 | L69 (G) | 180-190@4800 | 240@3200 | 305 | 3.736 x 3.48 | 9.5:1 | Iron | H.O., Firebird/Camaro, Monte Carlo SS only | |
I | 1985-92 | LB9 (F) | 190-230 | 275-300 | 305 | 3.736 x 3.48 | Iron | TPI, Firebird/Camaro only | ||
I | 1976-82 | LG3 (U) | 145@4400 | 245@2400 | 305 | 3.736 x 3.48 | 8.5:1 | Iron | 2bbl |
Generation II | |
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Overview | |
Manufacturer | General Motors |
Also called | GM LT engine |
Production | 1992-1997 |
Layout | |
Configuration | Naturally aspirated 90° V8 |
Displacement |
|
Cylinder bore | |
Piston stroke |
|
Block material | Aluminum, Cast iron |
Head material | Aluminum, Cast iron |
Valvetrain | Pushrod, 1.5:1 ratio rocker arms; 2 valves per cylinder |
Combustion | |
Fuel system | |
Fuel type | |
Oil system | Wet sump |
Cooling system | Water-cooled |
Chronology | |
Predecessor | Generation I |
Successor | Generation III |
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