1977 Dodge Ramcharger:
The Dodge Ramcharger was a large sport utility vehicle built by Dodge from 1974 to 1993 (and from at least 1986 until 2001 in Mexico) based on the shortened wheelbase of the Dodge D Series/Ram pickup truck chassis. A Plymouth version, named the Trailduster was offered from 1974 to 1981, the brand's only SUV, though one can argue that with similar classifications of early Plymouth station wagons, and the Plymouth Voyager minivan.
The Ramcharger was primarily produced as a full-time four wheel drive vehicle, although a two wheel drive version was available starting in 1975. During development, it was known as the "Rhino". 1974 through 1980 models have a removable hard top, although dealer-installed soft tops were available. The first year model differs from the others in that its door pillars are attached to the removable roof.
Like many vehicles, the Ramcharger was used in rallying, although its use was very limited. It did have some success, as demonstrated by achieving first place at Sno*Drift in 1975. In 1978 and 1979 the 360 CID's horsepower was bumped up to 195 horsepower (145 kW). 1978 was the last year for the 440 CID, which by then only put out 215 horsepower (160 kW).
The Ramcharger and Trailduster followed the D-series pickup's 1981 redesign into the Ram and is considered the second generation. These models had a non-removable welded steel top instead of the removable top. The Trailduster was only available for one year with the Ram design and steel non-removable top, as it was dropped after 1981.
The vehicle was usually powered by a Chrysler LA engine, the most common being the 318 cu in (5.2 L) V8. Optional was the 360 cu in (5.9 L) V8 and even big-block B series 400 cu in (6.6 L) V8 and RB 440 cu in (7.2 L) V8 were offered in the early years. Initially a normally aspirated carburetor, in 1988 the 318 gained throttle-body fuel injection with the 360 following in 1989. Power output for the TBI 318 was 230 horsepower (170 kW) and 280 lb·ft (380 N·m) of torque. The TBI 360 had 240 hp (180 kW) and 283 to 295 lb·ft (400 N·m). In 1992 the multiport fuel injected Magnum 318 was the standard engine while the LA 360 with TBI was still offered. In 1993 the Magnum 360 replaced the LA engine version.
Many manual transmissions were offered throughout the years, starting with the A-230 three-speed and ending with the A-535 five-speed in 1992. The NP435 "granny gear" 4 speed was the most common in 4WD models, as well as the close ratio version, the NP445. In 1988 the clutch was converted from a mechanical linkage to a hydraulic system. Automatic transmission models had the Chrysler Loadflite TF-727A or B until, in 1991, it was replaced with the A-500/A-518 four-speed.
A full-time four-wheel drive NP-203 transfer case was standard until 1980, when it was replaced with the part-time NP-208. This was supplanted by the NP-241 in 1988.
Axles were Dana 44 front and 9¼" rear. Full time 4WD models (1973–1979) were equipped with the full time version of the Dana 44 that had no provision for locking hubs and had a front wheel bearing design with a somewhat dubious reputation. In 1980 when the part time 4WD system was introduced, the front Dana 44 was equipped with a more conventional front wheel bearing design and automatic locking hubs. Late in the 1984 model year the Dana 44 was switched to a CAD (Center Axle Disconnect) version. The CAD Dana 44 was vacuum actuated by a switch on the transfer case and powered by engine vacuum. The CAD Dana 44 was carried on until the end of Ramcharger production in 1993. Users often ran into problems with the CAD system. The vacuum switch on the transfer case would occasionally fail and either leave the CAD engaged or not engage the CAD at all. Limited slip differentials were available for the 9¼" rear axle. The full-time 4WD versions used a 5 on 4½" wheel bolt circle and the part time models used a 5 on 5½" bolt circle.
Source: Wikipedia, 2014