When you're thinking about a transmission Conversion
If you are looking for information on what gear ratios you Jeep transmission has in it or looking to do a conversion or even just some RPM calculations the following table should provide the basic information you need. To locate our full line of remanufactured manual transmissions, in addition we offer a full line of overhaul/rebuild kits , syncros, gears and shafts that you might need.
Jeep Model | Year | Engine Type | Transmission Model & Parts List |
Forward Gears | Ratios |
Identifying Features |
Cherokee Full Size | 74-79 | 232ci I6, 258ci I6, 360ci V8 & 401ci V8 (74-78) | BW T-15 | Three | 2.99:1, 1.83:1, 1.00:1 Rev 2.99:1 | 9 5/8" long case, top shifter & 1 1/8" input shaft |
Cherokee Full Size | 74-79 | 232ci I6, 258ci I6, 360ci V8 & 401ci V8 (74-78) | BW T-18 | Four | 6.32:1, 3.09:1, 1.68:1, 1.00:1, Rev 7.44:1 | 11 7/8" long case, top shifter, & 1 1/8" input shaft |
Cherokee downsize | 84-86 | 2.8L V6 | BWT-4 & BWT-5 | Four & Five | 4.03:1, 2.37:1, 1.50:1, 1.00:1,.76:1, Rev 3.76:1 | 11 7/8" long case, top shifter, & 1 1/8" input shaft |
CJ5 &CJ6 | 55-62 | F-head 134ci-4 | T90A-1 | Three | 2.79:1, 1.55:1, 1.00:1, Rev 3.79:1 | 8" long case, top or side shifter & 15/16" diam. input shaft |
CJ5 &CJ6 | 60-71 | F-head 134ci-4 | T98 | Four | 6.39:1, 3.09:1, 1.68:1, 1.00:1, Rev 7.82:1 | 11-7/8" long case, top shifter, 15/16" dia. input gear, & adapter on front & rear |
CJ5 &CJ6 | 63-71 | F-head 134ci-4 | T90C | Three | 3.33:1, 1.55:1, 1:00:1, Rev 4.53:1 | 8" long case, top or side shifter, & 15/16" dia input gear |
CJ5 &CJ6 | 66-67 1/2 | Buick 225 ci V6 | T86 | Three | 2.79:1, 1.68:1, 1:00:1, Rev 3.79:1 | 8" long case, top or side shifter, & 1 1/8" dia input gear |
CJ5 &CJ6 | 66-71 | Buick 225 ci V6 | T18 | Four | 4.02:1, 2.41:1, 1:41:1, 1.00:1, Rev 4.73:1 | 11-7/8" long case, top shifter, 1 1/8" dia. input gear, & adapter on front & rear |
CJ5 &CJ6 | 67 1/2-71 | Buick 225 ci V6 | T14 | Three | 3.10:1, 1.61:1, 1:00:1, Rev 3.10:1 | 8 3/4" long case, top shifter & 1 1/8" dia input gear |
CJ5 &CJ6 | 72-75 | 232 ci I6 & 258 ci I6 | T14 | Three | 3.10:1, 1.61:1, 1:00:1, Rev 3.10:1 | 8 3/4" long case, top shifter & 1 1/8" dia input gear |
CJ5 &CJ6 | 72-75 | 232 ci I6, 258 ci I6 & 304 ci V8 | T15 | Three | 2.99:1, 1.93:1, 1:00:1, Rev 2.99:1 | 9 5/8" long case, top shifter & 1 1/8" dia input gear |
CJ5 &CJ6 | 72-75 | 232 ci I6, 258 ci I6 | T18 | Four | 4.02:1, 2.41:1, 1:41:1, 1.00:1, Rev 4.73:1 | 11 7/8" long case, top shifter, 1 1/8" dia and front adapter & rear |
CJ5 &CJ7 | 76 | 232 ci I6, 258 ci I6 | T18 | Four | 4.02:1, 2.41:1, 1:41:1, 1.00:1, Rev 4.73:1 | 11 7/8" long case, top shifter, 1 1/16" dia and rear adapter |
CJ5 &CJ7 | 76-79 | 232 ci I6, 258 ci I6 & 304 ci V8 | T150 | Three | 2.99:1, 1.75:1, 1:00:1, Rev 3.17:1 | 9 1/4" long cast iron case, top shifter & 1 1/16" dia input gear |
CJ5 &CJ7 | 80-81 1/2 | 304 ci V8 | T176 | Four | 3.82:1, 2.29:1, 1:46:1, 1.00:1, Rev 3.82:1 | 10 1/4" long aluminum case & top shifter on transmission cover |
CJ5, CJ7 & 8 | 80-84 | 151ci I-4 & 258 ci I6 | SR4 | Four | 3.52:1, 2.27:1, 1:46:1, 1.00:1, Rev 3.52:1 | 9 1/4" long aluminum case & top shifter in adapter to transfer case |
CJ5, CJ7 & 8 | 82-86 | 258 ci I6 | T5 | Five | 4.03:1, 2.37:1, 1:50:1, 1.00:1, .86:1, Rev 3.76:1 | 9 1/4" long aluminum case & top shifter in adapter to transfer case |
CJ5, CJ7 & 8 | 84-86 | 151ci I-4 & 258 ci I6 | T4 | Four | 4.03:1, 2.37:1, 1:50:1, 1.00:1, Rev 3.76:1 | 9 1/4" long aluminum case & top shifter in adapter to transfer case |
TJ | 97-98 | 4.0l I6 | AX15 | Five | 3.83:1, 2.33:1, 1:44:1, 1.00:1, .79:1 Rev 4.76:1 | Aluminum case & internal hydraulic throught o bearing |
TJ | 97-98 | 2.54L I4 | AX4 | Five | 3.93:1, 2.33:1, 1:44:1, 1.00:1, .83:1 Rev 4.79:1 | Aluminum case & internal hydraulic throw out bearing |
Wagoner | 63-65 | 230ci OHC6 | T90J | Three | 2.79:1, 1.55:1, 1:00:1, Rev 3.79:1 | 8" long case & top or side shifter |
Wagoner | 63-65 | 230ci OHC6 | T98 | Four | 6.39:1, 3.09:1, 1:68:1, 1.00:1, Rev 7.44:1 | 11 7/8" long case, top shifter & adapters front & rear |
Wagoner | 66-68 | 232ci I6 | T14 | Three | 3.10:1 or 2.90:1, 1.61:1 or 1.83:1, 1:00:1, Rev 3.10:1 or 2.90:1 | Top or side shifter |
Wagoner | 66-68 | 327ci V8 | T85 | Three | 2.97:1 or 2.49:1, 1.59:1, 1:00:1, Rev 3.15:1 | Side shifter |
Wagoner | 66-68 | 232ci I6 or 327ci V8 | T18 | Four | 6.39:1, 3.09:1, 1:68:1, 1.00:1, Rev 7.43:1 | 11 7/8" long case, top shifter, Adapter front and rear |
Wagoner | 68-71 | 232ci I6 or Buick 350ci V8 | T14 | Three | 3.10:1 or 2.99:1, 1.61:1 or 1.83:1, 1:00:1, Rev 3.10:1 or 2.90:1 | Top or Side Shifter |
Wagoner | 68-71 | 232ci I6 or Buick 350ci V8 | T18 | Four | 6.32:1, 3.09:1, 1:68:1, 1.00:1, Rev 7.43:1 | 11 7/8" long case, top shifter, Adapter front and rear, V8 & I6 versions differ |
Wagoner | 72-79 | 232ci I6, 258ci I6, AMC 360ci V8, AMC 401 V* (74-79) | T15 | Three | 2.98:1, 1.83:1 , 1:00:1, Rev 2.99:1 | Top or Side Shifter & adapter on front with 360ci V8 |
Wagoner | 72-79 | 232ci I6, 258ci I6, AMC 360ci V8, AMC 401 V* (74-79) | T18 | Four | 6.32:1, 3.09:1, 1:68:1, 1.00:1, Rev 7.44:1 | Top shifter, adapter front & rear, V8 &I6 version differ |
YJ-Wrangler | 87-89 | 4.2L I4 | Peugeot BA10 | Five | 3.39:1, 2.33:1, 1.4:1, 1.00:1, 0.79:1, Rev 3.39:1 | Two-piece clamshell case & five bolts to bell housing |
YJ-Wrangler | 89-96 | 4.2L I4 and 4.0L six | AX15-ASIN | Five | 3.83:1, 2.33:1, 1.44:1, 1.00:1, 0.79:1 Rev 4.76:1 | 1 1/8", 10 Spline input shaft |