New Process (NP) 271 Transfer Case
Looking for information on transfer cases found in fullsize Ford trucks? This page is dedicated to those cases and provides a list of vehicles, a list of cases that were found in them, and photos for reference.
Identification
Here is an example of the Borg Warner (BW) and New Process Gear (NP) identification tags:
Borg Warner:
New Process:
Transfer Cases
Ford Dana 20 Transfer Case:
Type: Part-time, cast-iron, geardriven case
The Ford Dana 20 transfer case is gear driven with a cast iron case. It was used in early Broncos from 1966 until 1977 and it was used in some Ford pickups. It is drivers drop and it was available with a couple different low range ratios.
Why you want it: Early Bronco versions have a strong housing, are small and lightweight, and can handle a fair amount of torque.
Why you don’t: The Bronco versions may be difficult to find. The Jeep Dana 20 and Ford Bronco Dana 20 are not the same.
Bronco Dana 20: 1966-1972 – These cases had a 2.46:1 low range.
Bronco Dana 20: 1973-1977 – These cases had a 2:34:1 Low range
BW1345 Transfer Case:
Type: Part-time, aluminum, chaindriven case.
Low range: 2.74:1
1980 – 1988 Ford F-series
1980 – 1989 Ford Bronco
Note that the BW1345 has more ‘ribs’ in the case than the BW1356.
BW1356 Transfer Case:
Type: Part-time, magnesium, chaindriven case
Low range: 2.69:1
1987 – 1997 Ford F-series, Bronco
Rare PTO-style BW1356 from a diesel pickup. Note the front case half is aluminum on this version, while the rear is magnesium, like all other BW1356s.
BW4406 Transfer Case:
Type: Cast aluminum case, Drive Type: Chain drive, manual & electronic shift versions. Available as part time or fill time, torque-on-demand
Gear Ratios:
- High Range 1.00 : 1 (direct drive)
- Low Range 2.64 : 1
Fluid Type/Spec: Automatic transmission fluid (ATF), 4 pint (1.9 liter) capacity
Weight: 98 lbs dry
1996 – 2003 Ford F150/F250, Expedition
BW4407 Transfer Case:
Type: Magnesium case, chain drive, part time, PTO available for F350, manual & electronic shift versions
Gear Ratios:
- High Range 1.00 : 1 (direct drive)
- Low Range 2.69 : 1
Fluid Type/Spec: Automatic transmission fluid (ATF), 2 liter capacity
1996 – 1998 Ford F250/F350
BW4416 Transfer Case:
Selectable torque on demand system, 2H-A4WD-4H-4L
Low range: 2.64:1
2003 – 2004 Ford F150
2001 – 2005 Ford Expedition
2001 – 2005 Lincoln Navigator
Can’t tell the difference between the BW4406 and BW4416 transfer case? Try looking for the gusset here:
NP203 Transfer Case:
Type: Full-time four-wheel- drive, cast-iron, chaindriven case
Low Range reduction ratio: 1.96:1 High Range: Direct (1:1)
Why you want it: Its full-time and easy to find, and its housing is made from heavy-duty cast iron.
Why you don’t: It weighs 170 pounds. The components may need to be replaced due to overuse. Over time, the full-time four-wheel drive could wear out other components.
The Ford NP203 has a 31 spline female input. The bolt pattern is the Ford rotation of the 6 bolt circular bolt pattern.
1974-1979 Ford Fullsize
NP205 Transfer Case:
Type: Part-time, cast-iron, geardriven case
Low range: 1.96:1
>Why you want it: One of the burliest transfer cases ever built. Made with both right- and left hand outputs, and divorced versions. It is heavy-duty, geardriven, and relatively easy to find. The 205 is available in six different versions.
Why you don’t: The low range is an anorexic 1:96.1. The 205 may not be shift-on-the-fly for some, and confusion may exist because there are six versions. Additionally, some have a slip-yoke on the rear output.
1973-1979 Ford Full Size
NP208 Transfer Case:
Type: Part-time, aluminum, chaindriven case
Low range: 2.61:1
Why you want it: The 208 is lightweight, the chain- drive operates quieter, and it is shift-on-the-fly. Two additional perks are that the case is inexpensive and easy to find.
Why you don’t: Weak slip-yoke design, aluminum housing may crack, removing the rear driveshaft causes an oil waterfall (Dodge and Jeep versions have bolt-on yokes), and several versions exist.
NP271 Transfer Case:
NVG271 (manual shifter) NVG273 (electronic shifter) Type: Part-time, magnesium, chaindriven case.
Low range: 2.72:1
NP273 Transfer Case:
NVG271 (manual shifter) NVG273 (electronic shifter) Type: Part-time, magnesium, chaindriven case.
Low range: 2.72:1
Ford Transfer Case Applications:
Bronco Full Size | 1989-1996 | BW1356 | (Electric shift) rear circular flange front fixed yoke |
1989-1996 | BW1356 | (Manual shift) rear circular flange, front fixed yoke one piece shift linkage | |
1987-1989 | BW1356 | (Electric shift) front and rear fixed yokes | |
1987-1989 | BW1356 | (Manual shift) fixed front and rear yoke bolt on shift linkage | |
1987-1989 | BW1356 | (Manual shift) fixed front yoke rear circular flange bolt on shift linkage | |
1987-1989 | BW1356 | (Manual shift) front and rear fixed yokes one piece shift linkage, 2″ rear spline | |
1982-1989 | BW1345 | 31 Spline front input front and rear fixed yokes shift lever is downward parallel to case when in neutral, .875 speedo hole | |
1980-1986 | NP208F | 31 Spline front input non-synchronized front & rear fixed yoke | |
1976-1979 | NP203F | Remote mount, full time, three fixed yokes | |
1973-1979 | NP203F | 31 Spline’s front input married, full time, automatic transmission | |
1973-1979 | NP203F | 4 speed, married, full time | |
1976-1977 | NP205F | Three fixed yokes remote mount, part time, w/manual transmission | |
Excursion | 2003-2005 | NP273F | 34 spline input gear super duty (electric shift) w/o speedo hole, 5 speed automatic ZF trans |
2000-2005 | NP273F | 31 Spline front input shaft super duty, (electric shift) automatic & manual w/speedo hole | |
Expedition | 2005 | BW4416 | 31 Spline input, rear slip w/TOD w/o speedo hole, electric shift, mounting hole in front case half |
2002-2004 | BW4416 | 31 Spline input, rear slip w/TOD w/o speedo hole, electric shift, | |
1999-2002 | BW4406 | (W/torque on demand) (electric shift) front & rear sensor hole w/o speedo hole | |
1997-1998 | BW4406 | (W/torque on demand) (electric shift) with speedo hole, front & rear sensor | |
F100 150 Series Pickup | 2003-2004 | BW4416 | 31 spline input, rear slip, w/o TOD, w/o speedo hole (electric shift) |
1999-2005 | BW4406 | (W/o Torque on Demand) (electric shift) w/o speedo hole | |
1999-2005 | BW4406 | (W/o Torque on Demand) (manual shift) shift on fly, w/speed sensor hole | |
1997-1998 | BW4406 | (W/o Torque on Demand) (electric shift) with speedo hole, front and rear sensor | |
1996-1998 | BW4406 | ||
1996-1998 | BW4406 | (W/o Torque on Demand) (manual shift) w/speedo hole shift on fly | |
1991-1997 | BW1356 | (Electric shift) w/o PTO slip rear yoke | |
19891997 | BW1356 | (Manual shaft), w/o PTO slip yoke, one piece shift linkage | |
1988-1991 | BW1345 | 32 Spline front input front & rear fixed yoke shift lever upward, parallel to front face of case in neutral .875″ speedo hole | |
1987-1988 | BW1356 | (Manual shift) w/o PTO slip rear yoke bolt on shift linkage | |
1987-1988 | BW1356 | (Manual shift) w/PTO, slip rear yoke bolt on shift linkage with PTO | |
1982-1989 | BW1345 | 31 Spline front input front and rear fixed yokes shift lever is downward parallel to case when in neutral .875 speed hole | |
1980-1986 | NP208F | 31 Spline front input non-synchronized slip rear yoke | |
1977-1979 | NP205F | 31 Spline front input married, part time, C-6 automatic fixed front and rear output yokes | |
1976-1979 | NP203F | Remount mount, full time, three fixed yokes | |
1973-1979 | NP203F | 31 Spline front input married, full time, automatic transmission | |
1987-88 | NP205F | Three fixed yokes remote mount, part time, w/manual transmission | |
F250 Series Pickup | 1999 | BW4406 | (W/o torque on demand) (electric shift) w/o speedo hole |
1999 | BW4406 | (W/o torque on demand) (manual shift) shift on the fly, w/speed sensor hole | |
1997-1998 | BW4406 | (W/o torque on demand) (electric shift) w/speedo hole , front & rear sensor | |
1996-1998 | BW4406 | (W/o torque on demand) (electric shift) w/speedo hole | |
1996-1998 | BW4406 | (W/o torque on demand) (manual shift) w/speedo hole, shift on the fly | |
1996-1997 | BW4407 | W/O PTO (manual shift) | |
1991-1997 | BW1356 | (Electric shift) w/o PTO slip rear yoke | |
1989-1997 | BW1356 | (Manual shift) w/o PTO slip rear yoke bolt on shift linkage | |
1989-1997 | BW1356 | (Manual shift) w/o PTO slip rear yoke bolt on shift linkage | |
1988-1991 | BW1345 | 32 Spline front input front & rear fixed yoke shift lever upward, parallel to front face of case in neutral .875″ speedo hole | |
1987-1988 | BW1356 | (Manual shift) w/o PTO slip rear yoke bolt on shift linkage | |
1987-1988 | BW1356 | (Manual shift) w/o PTO slip rear yoke bolt on shift linkage with PTO | |
1982-1989 | BW1345 | 31 Spline front input front and rear fixed yokes shift lever is downward parallel to case when in neutral 2″ speedo hole | |
1980-1986 | NP208F | 31 Spline front input married, part time, C-6 automatic fixed front and rear output yokes | |
1977-79 | NP205F | 31 Spline front front input married, part time, C-6 automatic fixed front and rear output yokes | |
1976-1979 | NP203F | Remote Mount, full time three fixed yokes | |
1973-1979 | NP203F | 31 Spline’s front input married, full time, automatic transmission | |
1973-1979 | NP203F | 4 speed, married, full time | |
1976-1977 | NP205F | Three fixed yokes remote mount, part time, w/manual transmission | |
F-350 Series Pickup | 1994-1997 | BW4407 | W/PTO (manual shift) w/o emergency brake |
1989-1997 | BW1356 | (Manual shift), w/PTO slip rear yoke, one piece shift linkage | |
1987-1988 | BW1356 | (Manual shift), w/PTO slip rear yoke bolt on, shift linkage with PTO | |
1980-1986 | NP208F | 31 Spline front input non-synchronized slip rear yoke | |
1977-1979 | NP205F | 31 Spline front input married, part time, C-6 automatic fixed front and rear output yokes | |
1976-1979 | NP203F | Remote mount, full time, three fixed yokes | |
1973-1979 | NP203F | 31 Spline front input married, full time, auto transmission | |
1976-1977 | NP205F | Three fixed yokes remote mount, part time. w/manual transmission | |
Motor Home Ford Chassis | 1999 | BW1356 | Manual shift, w/o PTO, slip rear yoke bolt on shift linkage, w/o rear extension housing |
F Series Super Duty 250 350 450 550 | 1999-2005 | NP273 | 24 Spline front input shaft super duty (electric shift) manual 6 speed transmission w//o speedo hole |
1999-2005 | NP271 | 24 Spline front input shaft super duty (manual shift) manual 6 speed transmission w//o speedo hole | |
2003-2005 | NP271 | 34 spline input gear super duty electric shift w/o speedo hole, 5 speed automatic ZF | |
2003-2005 | NP273 | 34 spline input gear super duty electric shift w/o speedo hole, 5 speed automatic transmission | |
1999-2003 | NP271 | 31 Spline front input shaft super duty (manual shift) auto or manual transmission 5 speed w/o speedo hole | |
1999-2003 | NP273 | 31 Spline front input shaft, super duty (electric shift) auto or manual transmission 5 speed w/o speedo hole |