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The letter F stands for "F"ront-wheel-drive. Although the F28 is only used in 4WD applications, the base transmission still remains a common FWD gearbox. The number 28 stands for the maximum torque capacity in Nm/10. 28 means that, the transmission is capable of transferring 280 N⋅m (210 lb⋅ft) nominal torque to the input shaft.
The "MH1" 4T80-E is able to handle vehicles up to 8000 lb (3628.74 kg) GVWR. The final drive ratio is 3.11:1, 3.48:1, or 3.71:1. The 4T80 uses a viscous torque converter clutch, which was replaced with EC3 (electronically controlled converter clutch) in 2005.
The final use of the 3.272 final drive ratio (Part 38100AB740) was in the 2009 Legacy 3.0R Limited sedan (but not the regular R sedan), the 2009 Outback 2.5XT Limited (but not the regular XT), and the 2009 Outback 3.0R Limited (but not the regular R or LL Bean). The first use of the 3.083 final drive ratio (Part 38100AB730) was in the 2007 ...
The aluminium case contains a conventional final drive gearset. There are sintered bronze double-cone blocker rings on the synchronizers for 1st and 2nd gears, while 3rd and 4th gears use carbon fiber blocker rings, and 5th and Reverse gears use molybdenum on their synchronizers.
With the early development of cars and the almost universal rear-wheel drive layout, the final drive (i.e. rear axle) ratio for fast cars was chosen to give the ratio for maximum speed. The gearbox was designed so that, for efficiency, the fastest ratio would be a "direct-drive" or "straight-through" 1:1 ratio, avoiding frictional losses in the ...
It is designed for service in vehicles up to 4000 lb (1814 kg) GVWR and in service was mated to a selection of final drive ratios 3.42:1, 3.73:1, or 3.91:1 depending on the carline. The 5L40-E had been designed for 1.8–3.6 L engines with a maximum of 250 ft·lbf (340 N·m) of torque.
In Drive at full throttle, it would upshift from low gear to high gear at 60–65 mph (97–105 km/h). Under light throttle, depending on the final drive ratio, it might upshift at 10-15 mph. From 1964-1967, Buick and Oldsmobile versions of this transmission used a torque converter with a variable-pitch stator called Switch-Pitch (by Buick) or ...
It provides final drive reduction ratios ranging from 2.88:1 to 4.55:1, depending upon the Jaguar model. The bolts that attach the differential to the subframe have small holes through their heads so that they can be safety wired to prevent them coming undone, which would otherwise be difficult to detect since they can only be accessed when the ...