The BW1356 replaced the BW1345 in the Ford Bronco and F-Series pickup line. It's a heavy duty, part time, chain driven transfer case available in either mechanical or electronic shift versions. The mechanical shift pattern is, from front to rear, 2H, 4H, N, 4L. The electronic shift version utilizes a worm gear driven mechanism. The BW1356's applications include the 7.3L Power Stroke diesel, paying homage to the unit's strength as the turbodiesel produces significantly more torque than any of Ford's gas engines. It has a cast magnesium case, which, like the BW1345, is comprised of two separate casting that are bolted down the middle latitudinally. The BW1356 requires MERCON ATF (or similarly spec'd automatic transmission fluid) for lubrication. In differentiating the BW1356 from the BW1345, the 1345 has many more ribs integrated into the casting should the ID tag be missing from the case.
BW1356 Specs
Manufacturer: |
Borg-Warner |
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Type: |
Part time, chain drive |
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Applications: |
1987 - 1997 Ford F-Series (F-150/250/350) and Bronco |
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Case Material: |
Magnesium, two piece |
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Shift Type: |
Manual and electric shift versions produced |
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Married/Divorced: |
Married |
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Ratios: |
High Range: |
1.00 : 1 |
Low Range: |
2.69 : 1 |
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Input Splines: |
31 spline |
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Output Splines: |
31 spline |
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Pass/Driver Drop: |
Driver side drop |
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Weight: |
~110 lbs |
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Fluid Type: |
MERCON ATF |
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Fluid Capacity: |
2 quarts capacity |
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Identification: |
Metal tag stamped with "1356" located on transfer case, typically on the backside. Magnesium, ribbed, two piece transfer case (two part casting bolted together in the center). |