Engine Specfications

1982 - 1992 Firebird Engine Specs

Breakdowns by year:

1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992

(The folowing HP & Torque #'s are supplied by Pontiac and actual real-world dyno results will vary)

1982:

Engine	Displacement	Comp._Ratio	Horse_Power	Torque	Induction_System
LQ8_(4_Cyl.)	2.5L / 151 C.I.	8.2:1	90@4000 RPM	132@2800_RPM	2 Barrel Carburetor
LQ9_(4_Cyl.)	2.5L / 151 C.I.	8.2:1	90@4000 RPM	132@2800 RPM	Throttle_Body_Injection
LC1____(V6)	2.8L / 173 C.I.	8.5:1	102@4800_RPM	142@2400 RPM	2 Barrel Carburetor
LG4____(V8)	5.0L / 305 C.I.	8.6:1	145@4000 RPM	240@2000 RPM	4 Barrel Carburetor
LU5____(V8)	5.0L / 305 C.I.	9.5:1	165@4200 RPM	240@2400 RPM	Cross Fire Injection

1983:

Engine	Displacement	Comp._Ratio	Horse_Power	Torque	Induction_System
LQ8_(4_Cyl.)	2.5L / 151 C.I.	8.2:1	92@4000_RPM	134@2800_RPM	2 Barrel Carburator
LQ9 (4 Cyl.)	2.5L / 151 C.I.	8.2:1	92@4000 RPM	134@2800 RPM	Throttle_Body_Injection
LC1 (V6)	2.8L / 173 C.I.	8.5:1	107@4800_RPM	145@2100 RPM	2 Barrel Carburator
LL1 (V6)	2.8L / 173 C.I.	8.5:1	125@5400 RPM	145@2400 RPM	2 Barrel Carburator/HO
LG4 (V8)	5.0L / 305 C.I.	8.6:1	150@4000 RPM	240@2400 RPM	4 Barrel Carburetor
LU5 (V8)	5.0L / 305 C.I.	9.5:1	175@4200 RPM	250@2800 RPM	Cross Fire Injection
L69 (V8)	5.0L / 305 C.I.	9.5:1	190@4800 RPM	240@3200 RPM	4 Barrel Carburetor/HO

1984:

Engine	Displacement	Comp._Ratio	Horse_Power	Torque	Induction_System
LQ9_(4_Cyl.)	2.5L / 151 C.I.	9.0:1	92@4000_RPM	134@2800_RPM	Throttle_Body_Injection
LC1 (V6)	2.8L / 173 C.I.	8.5:1	107@4800_RPM	145@2100 RPM	2 Barrel Carburator
LL1 (V6)	2.8L / 173 C.I.	8.5:1	125@5400 RPM	145@2400 RPM	2 Barrel Carburator/HO
LG4 (V8)	5.0L /305 C.I.	8.6:1	150@4000 RPM	240@2400 RPM	4 Barrel Carburetor
L69 (V8)	5.0L /305 C.I.	9.5:1	190@4800 RPM	240@3200 RPM	4 Barrel Carburetor/HO

1985:

Engine	Displacement	Comp._Ratio	Horse_Power	Torque	Induction_System
LQ9_(4_Cyl.)	2.5L / 151 C.I.	9.0:1	88@4400_RPM	132@2800_RPM	Throttle_Body_Injection
LB8 (V6)	2.8L / 173 C.I.	8.9:1	135@5100_RPM	165@3900 RPM	Multi-Port_Fuel_Injection
LG4 (V8)	5.0L / 305 C.I.	9.5:1	155@4200 RPM	245@2000 RPM	4 Barrel Carburetor
L69 (V8)	5.0L / 305 C.I.	9.5:1	190@4800 RPM	240@3200 RPM	4 Barrel Carburetor/HO
LB9 (V8)	5.0L / 305 C.I.	9.5:1	215@4400 RPM	275@3200 RPM	Tuned Port Injection

1986:

Engine	Displacement	Comp._Ratio	Horse_Power	Torque	Induction_System
LB8_ (V6)	2.8L / 173 C.I.	8.9:1	135@5100_RPM	160@3900_RPM	Multi-Port_Fuel_Injection
LG4/A4 (V8)	5.0L / 305 C.I.	9.5:1	155@4200 RPM	245@2000 RPM	4 Barrel Carburetor
LG4/5-Spd_(V8)	5.0L / 305 C.I.	9.5:1	165@4400 RPM	250@2000 RPM	4 Barrel Carburetor
L69 (V8)	5.0L / 305 C.I.	9.5:1	190@4800 RPM	240@3200 RPM	4 Barrel Carburetor/HO
LB9 _(V8)	5.0L / 305 C.I.	9.5:1	190@4000 RPM	285@2800 RPM	Tuned Port Injection

1987:

Engine	Displacement	Comp._Ratio	Horse_Power	Torque	Induction_System
LB8_ _(V6)	2.8L / 173 C.I.	8.9:1	135@4900_RPM	160@3900_RPM	Multi-Port_Fuel_Injection
LG4/A4 (V8)	5.0L / 305 C.I.	9.3:1	165@4400 RPM	245@2800 RPM	4 Barrel Carburetor
LG4/5-Spd_(V8)	5.0L / 305 C.I.	9.3:1	170@4400 RPM	250@2800 RPM	4 Barrel Carburetor
LB9/A4 _(V8)	5.0L / 305 C.I.	9.3:1	190@4000 RPM	295@3200 RPM	Tuned Port Injection
LB9/5-Spd_(V8)	5.0L / 305 C.I.	9.3:1	215@4400 RPM	295@3200 RPM	Tuned Port Injection
L98 (V8)	5.7L / 350 C.I.	9.3:1	225@4400 RPM	330@2800 RPM	Tuned Port Injection

1988:

Engine	Displacement	Comp._Ratio	Horse_Power	Torque	Induction_System
LB8_ _(V8)	2.8L / 173 C.I.	8.9:1	135@4900_RPM	160@3900_RPM	Multi-Port_Fuel_Injection
L03 (V8)	5.0L /305 C.I.	9.3:1	170@4000 RPM	255@2400 RPM	Throttle_Body_Injection
LB9/A4 _(V8)	5.0L / 305 C.I.	9.3:1	195@4000 RPM	295@2800 RPM	Tuned Port Injection
LB9/5-Spd_(V8)	5.0L / 305 C.I.	9.3:1	220@4400 RPM	290@3200 RPM	Tuned Port Injection
L98 (V8)	5.7L / 350 C.I.	9.3:1	230@4400 RPM	330@3200 RPM	Tuned Port Injection

1989:

Engine	Displacement	Comp._Ratio	Horse_Power	Torque	Induction_System
LB8__ (V6)	2.8L / 173 C.I.	8.9:1	135@4900_RPM	160@3900_RPM	Multi-Port_Fuel_Injection
L03 (V8)	5.0L / 305 C.I.	9.3:1	170@4400 RPM	255@2400 RPM	Throttle_Body_Injection
LB9/A4 (V8)	5.0L / 305 C.I.	9.3:1	195@4600 RPM	295@3200 RPM	Tuned Port Injection
LB9/5-Spd_(V8)	5.0L / 305 C.I.	9.3:1	230@4000 RPM	300@2800 RPM	Tuned Port Injection
L98 (V8)	5.7L / 350 C.I.	9.3:1	235@4400 RPM	340@3200 RPM	Tuned Port Injection
LC2 (V6)	3.8L / 231 C.I.	8.0:1	250@4400 RPM	340@2800 RPM	Sequential Fuel Injection

1990:

Engine	Displacement	Comp._Ratio	Horse_Power	Torque	Induction_System
LH0_ _(V6)	3.1L / 191 C.I.	8.5:1	140@4400_RPM	180@3600_RPM	Multi-Port_Fuel_Injection
L03 (V8)	5.0L / 305 C.I.	9.3:1	170@4000 RPM	255@2400 RPM	Throttle_Body_Injection
LB9/A4_ (V8)	5.0L / 305 C.I.	9.3:1	210@4400 RPM	285@3200 RPM	Tuned Port Injection
LB9/5-Spd_(V8)	5.0L / 305 C.I.	9.3:1	230@4200 RPM	300@3200 RPM	Tuned Port Injection
L98 (V8)	5.7L / 350 C.I.	9.3:1	235@4400 RPM	340@3200 RPM	Tuned Port Injection

1991:

Engine	Displacement	Comp._Ratio	Horse_Power	Torque	Induction_System
LH0_ _(V6)	3.1L / 191 C.I.	8.5:1	140@4400_RPM	180@3600_RPM	Multi-Port_Fuel_Injection
L03 (V8)	5.0L / 305 C.I.	9.3:1	170@4000 RPM	255@2400 RPM	Throttle_Body_Injection
LB9/A4_ (V8)	5.0L / 305 C.I.	9.3:1	205@4200 RPM	285@3200 RPM	Tuned Port Injection
LB9/5-Spd_(V8)	5.0L / 305 C.I.	9.3:1	230@4200 RPM	300@3200 RPM	Tuned Port Injection
L98 (V8)	5.7L / 350 C.I.	9.3:1	240@4400 RPM	340@3200 RPM	Tuned Port Injection

1992:

Engine	Displacement	Comp._Ratio	Horse_Power	Torque	Induction_System
LH0_ _(V6)	3.1L / 191 C.I.	8.5:1	140@4400_RPM	180@3600_RPM	Multi-Port_Fuel_Injection
L03 (V8)	5.0L / 305 C.I.	9.3:1	170@4000 RPM	255@2400 RPM	Throttle_Body_Injection
LB9/A4_ (V8)	5.0L / 305 C.I.	9.3:1	205@4200 RPM	285@3200 RPM	Tuned Port Injection
LB9/5-Spd_(V8)	5.0L / 305 C.I.	9.3:1	230@4200 RPM	300@3200 RPM	Tuned Port Injection
L98 (V8)	5.7L / 350 C.I.	9.3:1	240@4400 RPM	340@3200 RPM	Tuned Port Injection

Back to Top