4.2 L Vortec inline-6
E117680
The 4.2 L Vortec inline-6 is a GM-designed straight-six gasoline engine known for its smooth operation and use in mid-2000s SUVs and trucks.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Vortec 4200 | 4 |
| 4.2 L Vortec 4200 inline-6 | 1 |
| 4.2 L Vortec LL8 inline-6 | 1 |
| 4.2 L Vortec inline-6 canonical | 1 |
| Vortec 2900 | 1 |
| Vortec inline engine family | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T990537 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: 4.2 L Vortec inline-6 Context triple: [Saab 9-7X, engineOption, 4.2 L Vortec inline-6]
-
A.
Vortec V8
Vortec V8 is a family of Chevrolet/GMC small-block V8 gasoline engines known for their use in GM trucks and SUVs, offering a balance of power, durability, and efficiency.
-
B.
Duramax V8 diesel
The Duramax V8 diesel is a family of turbocharged diesel engines co-developed by General Motors and Isuzu, widely used in heavy-duty Chevrolet and GMC trucks for their strong torque, towing capability, and durability.
-
C.
Rocket V8 engine
The Rocket V8 engine was Oldsmobile’s pioneering overhead-valve V8 introduced in the late 1940s, widely credited with helping launch the American high-performance and muscle car era.
-
D.
Perkins CV12-6A V12 diesel
The Perkins CV12-6A is a 12-cylinder turbocharged diesel engine used as the powerplant for the British Challenger 2 main battle tank.
-
E.
Mitsubishi Kinsei radial engine
The Mitsubishi Kinsei was a Japanese air-cooled radial aircraft engine widely used in World War II combat aircraft.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: 4.2 L Vortec inline-6 Target entity description: The 4.2 L Vortec inline-6 is a GM-designed straight-six gasoline engine known for its smooth operation and use in mid-2000s SUVs and trucks.
-
A.
Vortec V8
Vortec V8 is a family of Chevrolet/GMC small-block V8 gasoline engines known for their use in GM trucks and SUVs, offering a balance of power, durability, and efficiency.
-
B.
Duramax V8 diesel
The Duramax V8 diesel is a family of turbocharged diesel engines co-developed by General Motors and Isuzu, widely used in heavy-duty Chevrolet and GMC trucks for their strong torque, towing capability, and durability.
-
C.
Rocket V8 engine
The Rocket V8 engine was Oldsmobile’s pioneering overhead-valve V8 introduced in the late 1940s, widely credited with helping launch the American high-performance and muscle car era.
-
D.
Perkins CV12-6A V12 diesel
The Perkins CV12-6A is a 12-cylinder turbocharged diesel engine used as the powerplant for the British Challenger 2 main battle tank.
-
E.
Mitsubishi Kinsei radial engine
The Mitsubishi Kinsei was a Japanese air-cooled radial aircraft engine widely used in World War II combat aircraft.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
automobile engine
ⓘ
gasoline engine ⓘ inline-six engine ⓘ |
| alsoKnownAs |
LL8
ⓘ
Vortec 4200 ⓘ
linked to:
4.2 L Vortec inline-6
|
| application |
light trucks
ⓘ
mid-size SUVs ⓘ |
| blockMaterial | cast iron ⓘ |
| bore | 93.0 mm ⓘ |
| compressionRatio | 10.0:1 ⓘ |
| configuration | inline-6 ⓘ |
| coolingSystem | water-cooled ⓘ |
| cylinderCount | 6 ⓘ |
| displacement |
256 cu in
ⓘ
4.2 L ⓘ |
| emissionsControl |
OBD-II compliant
ⓘ
catalytic converter ⓘ |
| engineCode | LL8 ⓘ |
| family | GM Atlas engine family ⓘ |
| features |
balance shaft
ⓘ
coil-on-plug ignition ⓘ electronic throttle control ⓘ variable valve timing on exhaust cam (later years) ⓘ |
| fuelSystem | sequential multi-port fuel injection ⓘ |
| fuelType | gasoline ⓘ |
| headMaterial | aluminum ⓘ |
| ignitionSystem | coil-on-plug ⓘ |
| induction | naturally aspirated ⓘ |
| knownFor |
smooth operation
ⓘ
use in mid-2000s GM SUVs and trucks ⓘ |
| manufacturer | General Motors ⓘ |
| market | North America ⓘ |
| powerOutput |
approximately 270 hp (early versions)
ⓘ
up to about 291 hp (later versions) ⓘ |
| productionEnd | 2009 ⓘ |
| productionStart | 2002 ⓘ |
| stroke | 102.0 mm ⓘ |
| successor | GM High Feature V6 engines ⓘ |
| torqueOutput |
approximately 275 lb·ft (early versions)
ⓘ
up to about 277 lb·ft (later versions) ⓘ |
| totalValves | 24 ⓘ |
| usedInVehicle |
Buick Rainier
ⓘ
Chevrolet TrailBlazer ⓘ
linked to:
Chevrolet Trailblazer
GMC Envoy ⓘ Isuzu Ascender ⓘ Oldsmobile Bravada ⓘ Saab 9-7X ⓘ |
| valvesPerCylinder | 4 ⓘ |
| valvetrain | DOHC ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: 4.2 L Vortec inline-6 Description of subject: The 4.2 L Vortec inline-6 is a GM-designed straight-six gasoline engine known for its smooth operation and use in mid-2000s SUVs and trucks.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: 4.2 L Vortec inline-6
linked to: 4.2 L Vortec inline-6
linked to: 4.2 L Vortec inline-6
linked to: 4.2 L Vortec inline-6
linked to: 4.2 L Vortec inline-6
linked to: 4.2 L Vortec inline-6
linked to: 4.2 L Vortec inline-6
linked to: 4.2 L Vortec inline-6