The older ones used the 225 Slant Six, but that definitely isn't the leaning tower of power. That looks like the 3.9 to me. Here's a bunch of info on that engine: The 3.9 liter LA-series Dodge V6 engine

Ours was in a 1992 Dakota, so it was a Magnum engine (1992 was the first year of the Magnum in the Dakota, but I'm not sure on the full size trucks. The Magnum engines just had more power and torque, but were the same basic design. The engine we had worked well.

You don't see many older Dodges out there, but I'm working on a full-size one as a project:


If you take care of them, Dodge made a great truck. If yours is old enough to have an ammeter instead of a voltmeter (Mine is a 1986 and still uses the ammeter), check to make sure that the wire isn't broken. There is a lot of current that goes into an ammeter. The volt gauges weren't as big of a deal...

matador: "Truck Yeah!"