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The output for the front drive shaft is on the right side and the rear output is in line with the input. This enables 2-wheel High to be direct-drive, which is quieter. Otherwise the Dana 20 offers the same drive modes as the Dana 18. Its low range has a ratio of 2.03:1. The Dana 20 is generally compatible with the "big hole" Dana 18.
This mode can be used on dry pavement or slippery surfaces with only a small fuel mileage penalty compared to 2WD mode. In 4WD Hi Part-Time and 4WD Low, the center differential is mechanically locked, so these modes are for slippery surfaces only. [5] Low range engages a 2.72:1 planetary gear ratio for increased torque and low speeds.
The line was offered in four ratings, M-300, M-375 (also known as M-400 between 1969–1973), [1] M-500, and M-600 depending on the application. The M600 was offered with the Rockwell F-130-NX rear axle, with a 4.88:1 gear ratio. By 1979, Chrysler Corporation no longer sold incomplete chassis and ended production of the M series.
It had a 126-inch (3,200 mm) up to a 147" wheelbase chassis and featured the 230 cubic-inch flathead inline-six engine, a 4-speed manual transmission, a two-speed 1.96-1 ratio low range transfer case for part time 4-wheel drive with a power take off (PTO) which would send power front or rear for operating auxiliary equipment, and 9.00/16-8 ply ...
The braking system was upgraded to dual-piston calipers in the front. An Off-Road Edition was offered as a package with a 2-inch lift, accomplished with stiffer front springs and rear lift blocks, unique 17×8" wheels, 275/70/17 all-terrain tires, 4.10:1 rear axle ratio, trussed Dana 44 front axle, limited-slip differential, and skid plates. [19]
The transfer case may contain one or more sets of low range gears for off-road use. Low range gears are engaged with a shifter or electronic switch. In many transfer cases, this shifter is the same as the one that selects 2WD or 4WD operation. Low range gears allow the vehicle to drive at much slower speeds while still operating within the ...
The Dana 44 Front axle first saw use in the 1950s and still in use today. Dana 44 Front axles were known for utilizing locking hubs or a center axle disconnect system. However, a permanently locked-in Dana 44 is not uncommon. The Dana 44 has seen use in 1/4-, 1/2-, 3/4-, and 1-ton rated trucks.
Dana Incorporated is an American supplier of axles, driveshafts, and electrodynamic, thermal, sealing, and digital equipment for conventional, hybrid, and electric-powered vehicles. The company's products and services are aimed at the light vehicle, commercial vehicle, and off-highway equipment markets.