Photo 1/4 | 1102dp First 5 9l Powered Ram Pickup 1989 D250 | First 5.9L-Powered Ram Pickup
Photo 2/4 | 1102dp First 5 9l Powered Ram Pickup 1989 D250 | When we visited Cummins' Midrange Engine Plant (CMEP) last July, we took a ride in the first Cummins-powered production truck (the first first-gen): this '89 D250 equipped with the TorqueFlite 727 three-speed automatic. The truck only has 42,653 original miles on it, with the majority of them racked up during public relations and promotional endeavors back in the late '80s. However, we were told it was used quite a bit for testing-including towing trailers through the mountains of Colorado.
Photo 3/4 | 1102dp First 5 9l Powered Ram Pickup b Series 5 9l Engine | The B-series 5.9L was a joint venture between Cummins and Case (called Consolidated Diesel Corp.), and production of the engine began in 1984. The inline-six mill's original purpose was to power off-highway equipment such as loaders, cranes, crawlers, tractors, and gen-sets. Although the '89 Dodge Ram came with a 160hp rating, an even more conservative 90hp rating could be found on some of the smaller equipment the 5.9L was powering (example: Case's popular 855D track loaders).
Photo 4/4 | 1102dp First 5 9l Powered Ram Pickup engine Bay Shot 2 |
Thanks to a 4.72-inch stroke, the 5.9L found in Dodge Rams made 400 lb-ft at 1,700 rpm. Composed of an iron block and head, steel crankshaft, assembled camshaft, and forged I-beam connecting rods, it's easy to see why these engines are durable enough to hit the million-mile mark in Ram pickups without needing an overhaul. The B-series wasn't considered overly expensive in its day, either, as the Cummins engine option only cost an additional $2,043.