Wagoneer 1971-1983
Grand Wagoneer 1984-1991
J-Series Truck 1971 - 1987
Engine
Type : 6 Cyl
Displacement : 258 ci
Bore & Stroke : 3.75 x 3.90 in
Compression Ratio : 8.0:1
Power : 110hp @ 3,500
Torque : 195lb-ft @ 2,000
Induction : 1bbl Carter YF
Type : V-8 OHV
Displacement : 304 ci
Bore & Stroke : 3.75 x 3.44 in
Compression Ratio : 8.4:1
Power : 150hp @ 4,200
Torque : 245lb-ft @ 2,500
Induction : 2bbl Autolite 2100
Type : V-8 OHV
Displacement : 360 ci
Bore & Stroke : 4.08 x 3.44 in
Compression Ratio : 8.25:1
Power : 175hp @ 4,000
Torque : 285lb-ft @ 2,400
Induction : 2bbl Autolite 2100 /4bbl Autolite 4300
Type : V-8 OHV
Displacement : 401 ci
Bore & Stroke : 4.16 x 3.68 in
Compression Ratio : 8.35:1
Power : 215hp @ 4,200
Torque : 320lb-ft @ 2,800
Induction : 4bbl Autolite 4300
Transmission
Type & Model (Manual)
1. 3 Speed Warner T-14A (1971-79 6cyl Wagoneers)
2. 3 Speed Warner T-15A (1971-79 V8 Wag. & Trk)
3. 4 Speed Warner T-18 (1971-79 Wag, 71-87 Trk)
4. 4 Speed Tremec T-176 (1980-86 Wag & Trk)
Ratios
1. 1)3.10 2)1.74 3)1.00 R)3.10
2. 1)3.00 2)1.83 3)1.00 R)3.00
3. 1)6.32 2)3.09 3)1.69 4)1.00 R)7.44
4. 1)3.52 2)2.27 3)1.46 4)1.00 R)3.52
10.5" (6 Cyl)
Type & Model (Automatic)
1. 3 Speed GM TH-400 (1971-79 with Quadra-Trac)
2. 3 Speed Chrysler TF-727 (1980-91 Wag, 80-87 Trk)
Ratios
1. 1)2.48 2)1.48 3)1.00 R)2.07
2. 1)2.45 2)1.45 3)1.00 R)2.00
Clutch Diameter
10.5" (6 Cyl)
11" ( V-8 )
Transfer Case
Type & Model (Part Time)
1. 2 Speed Dana 20 (std 1971-79 manual trans)
2. 2 Speed NP-208 "Command Trac" (std 1980-91)
3. 2 Speed NP-229 "Selec-Trac" (opt 1983-86)
4. 2 Speed NP-228 "Quadra-Trac" (opt 1985-91)
5. 2 Speed NP-242 "Selec-Trac" (opt 1987-91)
Ratios
1. 2.57/1.00
2. 2.60/1.00
3. 2.61/1.00
4. 2.61/1.00
5. 2.72/1.00
Type & Model (Full Time)
1. 1 or 2 Speed BW 1339 "Quadra-Trac" (1971-79 automatic trans)
2. 2 Speed NP-219 "Quadra-Trac " (opt 1980-85)
Ratios
1. 2.03/1.00
2. 2.61/1.00
Axles
Front Type & Model
FF, Dana 44
Rear Type & Model
SF, Dana 44 (1971-75 Wag, 1/2 ton Trk, 74-83 wide track, 87-91 Grand Wag)
SF, AMC 20 (1976-86 Wag & 1/2 ton Truck)
SF, Dana 60 (1971-1987 3/4 ton Truck)
FF, Dana 60 (1971-87 3/4 ton, 1 ton Truck)
Ratios
3.07, 3.31/3.54, 3.73 Wagoneer
3.07, 3.54/3.73, 4.09 Truck
Notes:
1974 the Axles went from a track width of 57.5" to 59" (narrow track Wagoneers & Cherokees). It also marked the first year of the open knuckle design and disk brakes. It also changed the wheel lug pattern from 5 on 5.5" to 6 on 5.5". The years of
1974-mid 1977 the front Dana 44 came with the desirable "flat top" knuckle design, which is used for the high steering setup.
1979 an older have a passenger side front differential.
1980 - 1991 have a drivers side front differential
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