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Transfer Case Information:

Note: This table will be updated as I find more information.

Make Model Gear Ratio Case Front Drop Rear Drop Gear/ Chain Married/ Divorced Full/ Part Time Used By/ Years Other Features
Borg Warner Quadratrac/ 13-39 2.57:1 Aluminum Right Right Chain Married Full Time Jeep 1977-1979 Used in Jeeps behind TH400 transmissions.
Borg Warner 13-45 2.72:1 Aluminum Left Center Chain Married Part Time Ford 1980-1988
Borg Warner 13-50 2.72:1 Aluminum Left Center Chain Married Part Time Ford 1980-1988?
Borg Warner 13-56 2.72:1 Magnesium Left Center Chain Married Part Time Ford 1988-present
Borg Warner 13-59 N/A Aluminum No Front Center No Front Married Part Time Ford 1980-1988 Used in place of real transfer case on 2WD Bronco II's.
Borg Warner 13-61 N/A Aluminum N/A Center Viscous Married N/A Range Rovers
Dana 18 2.46:1 Cast Iron Right Right Gear Married Part Time International 1961-1965 Unlike on Jeep version, no parking brake on rear output.
Dana 18 N/A Cast Iron Right Right Gear Married Part Time Jeep 1941-1971 Drum parking brake on rear output on early versions.
Dana 20 2.62:1 or 2.48:1 Cast Iron Left Center Gear Married Part Time Ford 1966-1977
Dana 20 2.03:1 Cast Iron Right Center Gear Married Part Time International 1965-1979
Dana 20 2.03:1 Cast Iron Right Center Gear Married Part Time Jeep 1972-1979
Dana 21 (none) Cast Iron Left Center Gear N/A Part Time Ford 1969-1976
Dana 24 1.86:1 Cast Iron Left Center Gear Divorced Part Time Ford 1960-1973 Undocumented 2wd low range
Dana 300 2.61:1 Cast Iron Right Center Gear Married Part Time International 1980 Aluminum tailhousing
Dana 300 2.61:1 Cast Iron Right Center Gear Married Part Time Jeep 1980-1986 Aluminum tailhousing
International TC-143 Single-Speed Aluminum Right Center Chain N/A Part Time International 1971-1979
New Process 200 N/A Cast Iron Right Center Gear Divorced Part Time Dodge Drum parking brake on rear output.
New Process 201 N/A Cast Iron Right Center Gear Married Part Time Dodge
New Process 202 N/A Cast Iron Right Center Gear Married Part Time International
New Process 203 1.98:1 Cast Iron Right Center Chain Married Full Time Dodge 1971-1980, GM 1971-1980
New Process 203 1.98:1 Cast Iron Left Center Chain Married Full Time Ford 1971-1980
New Process 205 1.98:1 Cast Iron Right Center Gear Both Part Time Dodge 1971-1980, GM 1971-1990
New Process 205 1.98:1 Cast Iron Left Center Gear Both Part Time Ford 1971-1980
New Process 207 2.61:1 Aluminum Left Center Chain Married Part Time Jeep 1987 (Wrangler/YJ), Jeep 1984-87 (Cherokee/XJ)
New Process 208 2.61:1 Aluminum Left Center Chain Married Part Time Dodge 1979-1987, Ford 1980-1987, Jeep 1980-1987
New Venture 124 N/A N/A N/A Center N/A N/A Full Time N/A
New Venture 125 N/A N/A N/A Center N/A N/A Full Time N/A
New Venture 126 N/A N/A N/A Center N/A N/A On Demand N/A
New Venture 136 N/A N/A N/A Center N/A N/A On Demand N/A
New Venture 149 N/A N/A N/A Center N/A N/A All Wheel Drive N/A
New Venture 226 N/A N/A N/A Center N/A N/A On Demand N/A
New Venture 231 (or 231J) 2.72:1 Aluminum Left Center Chain Married Part Time Jeep 1987-present Has a slip yoke rear.
New Venture 233 N/A N/A N/A Center N/A N/A Part Time N/A Electric Shift
New Venture 236 N/A N/A N/A Center N/A N/A On Demand N/A
New Venture 241D 2.72:1 Aluminum Left and Right Center Chain Married Part Time Dodge 1988-present
New Venture 241G 2.72:1 Aluminum Left and Right Center Chain Married Part Time GM 1988-present
New Venture 241J (also known as the 241OR) 4.00:1 Aluminum Left Center Chain Married Part Time Jeep, Rubicon model 2002-and-up
New Venture 242 2.72:1 Aluminum Left Center Chain Married Full Time Jeep 1979-present, AMG 1989?-present
New Venture 243 N/A N/A N/A Center N/A N/A Part Time N/A Electric Shift
New Venture 246 N/A N/A N/A Center N/A N/A On Demand N/A
New Venture 247 N/A N/A N/A Center N/A N/A On Demand N/A
New Venture 249 N/A N/A N/A Center N/A N/A Full Time N/A
New Venture 249OD N/A N/A N/A Center N/A N/A On Demand N/A
New Venture 261 N/A N/A N/A Center N/A N/A Part Time N/A
New Venture 261 HD N/A N/A N/A Center N/A N/A Part Time N/A
New Venture 261 SHD N/A N/A N/A Center N/A N/A Part Time N/A
New Venture 263 HD N/A N/A N/A Center N/A N/A Part Time N/A Electric Shift
New Venture 263 SHD N/A N/A N/A Center N/A N/A Part Time N/A Electric Shift
New Venture 271 N/A N/A N/A Center N/A N/A Part Time N/A
New Venture 273 N/A N/A N/A Center N/A N/A Part Time N/A Electric Shift
Nissan ATX-14A 2.596:1 Aluminum Left Center Chain Married Part Time (On-Demand) Pathfinder 1999-present, Infiniti QX4 1997-2003 Slip yoke on rear, electric shift.
Nissan TX-10A 2.02:1 Aluminum Left Center Chain Married Part Time Nissan 1986.5-present Slip yoke on rear, 24-spline input for I4 engine, 30 spline for V6.
Spicer 1.87:1 N/A Right Center N/A Divorced N/A GM 1956-1959
Timken 221 1.94:1 Cast Iron Right Center Gear Divorced N/A GM 1960-1966
Timken 223 1.94:1 Cast Iron Right Center Gear Married N/A GM 1967-1968 Drum parking brake on rear output.
Toyota Truck 2.28:1 Aluminum Right Center Gear Married Part Time 1979-1980 Trucks 21-spline input.
Toyota Truck 2.28:1 Aluminum Right Center Gear Married Part Time 1981-1983 Trucks 21-spline input.
Toyota Truck 2.28:1 Aluminum Right Center Gear Married Part Time 1984-1988 Trucks Carbureted trucks only. 21-spline input.
Toyota Truck 2.28:1 Aluminum Right Center Gear Married Part Time 1985-1988 Trucks EFI trucks only. 21-spline input.
Toyota Truck 2.28:1 Aluminum Right Center Gear Married Part Time 1989-1995 Trucks 21-spline input.
Toyota Truck 2.28:1 Aluminum Right Center Gear Married Part Time 1986-1987 Trucks 23-spline input.
Toyota Truck 2.57:1 Aluminum Right Center Chain Married Part Time 1988 Trucks 32-spline input.
Toyota Truck 2.57:1 Aluminum Right Center Chain Married Part Time 1989-1995 26-spline input.


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