5.2,3.9,2.5 engines
Joined: Mar 2008
Posts: 15
Likes: 0
RE: 5.2,3.9,2.5 engines
dont know this might help some
Engines
[ul][*]1987-1988 - 2.2L K I4, SOHC, 96hp[*]1987-1991 - 3.9L LA V6, 125hp[*]1989-1995 - 2.5L K I4, 99hp[*]1991 - 5.2L LA V8, 170hp[*]1992-1993 - 3.9L Magnum V6, 180hp[*]1991-1993 - 5.2L Magnum V8, 230hp[*]1994-1996 - 3.9L Magnum V6, 175hp[*]1994-1996 - 5.2L Magnum V8, 220hp[*]1996 - 2.5L AMC I4, 120hp [/ul]
Engines
[ul][*]1987-1988 - 2.2L K I4, SOHC, 96hp[*]1987-1991 - 3.9L LA V6, 125hp[*]1989-1995 - 2.5L K I4, 99hp[*]1991 - 5.2L LA V8, 170hp[*]1992-1993 - 3.9L Magnum V6, 180hp[*]1991-1993 - 5.2L Magnum V8, 230hp[*]1994-1996 - 3.9L Magnum V6, 175hp[*]1994-1996 - 5.2L Magnum V8, 220hp[*]1996 - 2.5L AMC I4, 120hp [/ul]
Rookie
Joined: Feb 2008
Posts: 81
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From:
RE: 5.2,3.9,2.5 engines
Mine's a '94 ext. cab with the 3.9 Magnum. Only mod (so far) is a CAI, and I'm getting 22-23 mpg with an 82 mi. highway round trip everyday at 70 MPH. And I hate to disagree, but I find the v6 to have plenty of power (for a commuter work truck anyway, lol). It does get pretty good mileage for a truck this heavy, though, I love this truck.
Record Breaker
Joined: Jan 2007
Posts: 2,007
Likes: 2
From: Willow Street, PA
RE: 5.2,3.9,2.5 engines
ORIGINAL: OneBadKota
I believe the Gen I(86-90) were mostly carbed. LA motors were until '92, then it went Magnum.
They're all easy to work on due to rear-wheel drive, IMO
Not many problems with the Magnum engines, that I've heard about. Don't think there was ever a real big issue with the LA's either.
The HP ratings drastically changed over the years.
To change the oil, there's a drain plug on the back side of the oil pan and the filter should be next to the oil pan on the passenger side.
The 3.9s were more popular with the Gen IIs(91-96) followed by 5.2 and then 2.5.
As for gas mileage, it'd go 2.5 and then 3.9/5.2 were close together
I prefer a Gen II to own, if you want an older one, but the Gen IIIs(97-04) are nice as well.
I would really recommend a 5.2 for the HP/Towing and gas mileage. These trucks are quite heavy for the 3.9 to really have much pep and gas mileage.
Hope that helps.
I believe the Gen I(86-90) were mostly carbed. LA motors were until '92, then it went Magnum.
They're all easy to work on due to rear-wheel drive, IMO
Not many problems with the Magnum engines, that I've heard about. Don't think there was ever a real big issue with the LA's either.
The HP ratings drastically changed over the years.
To change the oil, there's a drain plug on the back side of the oil pan and the filter should be next to the oil pan on the passenger side.
The 3.9s were more popular with the Gen IIs(91-96) followed by 5.2 and then 2.5.
As for gas mileage, it'd go 2.5 and then 3.9/5.2 were close together
I prefer a Gen II to own, if you want an older one, but the Gen IIIs(97-04) are nice as well.
I would really recommend a 5.2 for the HP/Towing and gas mileage. These trucks are quite heavy for the 3.9 to really have much pep and gas mileage.
Hope that helps.
Professional
Joined: Mar 2008
Posts: 162
Likes: 2
From: Fort Lewis
RE: 5.2,3.9,2.5 engines
ORIGINAL: jlbritt1
Mine's a '94 ext. cab with the 3.9 Magnum. Only mod (so far) is a CAI, and I'm getting 22-23 mpg with an 82 mi. highway round trip everyday at 70 MPH. And I hate to disagree, but I find the v6 to have plenty of power (for a commuter work truck anyway, lol). It does get pretty good mileage for a truck this heavy, though, I love this truck.
Mine's a '94 ext. cab with the 3.9 Magnum. Only mod (so far) is a CAI, and I'm getting 22-23 mpg with an 82 mi. highway round trip everyday at 70 MPH. And I hate to disagree, but I find the v6 to have plenty of power (for a commuter work truck anyway, lol). It does get pretty good mileage for a truck this heavy, though, I love this truck.
Soar Dude