MANUAL TRANSMISSIONS
T-18/T-98
Type: 4-spd. manual
Length (in.): 11.87
Weight (lb.): 150 (approx.)
Used by: Ford, Jeep, and IH in a number of vehicles and styles that may or may not be interchangeable due to bolt patterns, input-shaft lengths, and rear face designs. The T-18 and early-model (1953-66) T-98 are basically the same except in the way the main shaft is supported. This is a fairly compact transmission with a cast-iron case. Its extremely strong design makes it very popular, and it's easily adapted to a variety of applications. The left side of the case is stamped T-18 or T-98. A PTO access plate can be found on the left-hand side.
4-spd. manual
Length (in.): 11.87
Weight (lb.): 150 (approx.)
Used by: Ford, Jeep, and IH in a number of vehicles and styles that may or may not be interchangeable due to bolt patterns, input-shaft lengths, and rear face designs. The T-18 and early-model (1953-66) T-98 are basically the same except in the way the main shaft is supported. This is a fairly compact transmission with a cast-iron case. Its extremely strong design makes it very popular, and it's easily adapted to a variety of applications. The left side of the case is stamped T-18 or T-98. A PTO access plate can be found on the left-hand side.
T-170 SERIES
Type: 4-spd. manual
Ratios (:1) T-176 T-177 T-178
1st 3.52 3.82 3.00
2nd 2.27 2.29 2.08
3rd 1.46 1.46 1.47
4th 1.00 1.00 1.00
Rev. 3.52 3.83 3.01
Weight (lb.): 70 (approx.)
Length (in.): 10 1/4 (approx.)
Used by: Jeep, in various configurations from 1980-86. This aluminum-cased, fully synchronized transmission series was made by Tremac of Mexico. The least desirable is the T-178 with its tall First gear; the most desirable is the T-177, which has the widest gear spread of the three. Generally speaking, it was used with six-cylinder engines; most V-8s used the T-176. This series is conservatively rated at 275 lb.-ft. of torque, but these transmissions are capable of handling considerably more. These trannys use the Ford bolt pattern, the same as the T-150. The T-series may have casting No. 2604203. The shift cover is top-mounted and held on with 10 bolts.
4-spd. manual
Ratios (:1) T-176 T-177 T-178
1st 3.52 3.82 3.00
2nd 2.27 2.29 2.08
3rd 1.46 1.46 1.47
4th 1.00 1.00 1.00
Rev. 3.52 3.83 3.01
Weight (lb.): 70 (approx.)
Length (in.): 10 1/4 (approx.)
Used by: Jeep, in various configurations from 1980-86. This aluminum-cased, fully synchronized transmission series was made by Tremac of Mexico. The least desirable is the T-178 with its tall First gear; the most desirable is the T-177, which has the widest gear spread of the three. Generally speaking, it was used with six-cylinder engines; most V-8s used the T-176. This series is conservatively rated at 275 lb.-ft. of torque, but these transmissions are capable of handling considerably more. These trannys use the Ford bolt pattern, the same as the T-150. The T-series may have casting No. 2604203. The shift cover is top-mounted and held on with 10 bolts.
MUNCIE (SM) 465
Type: 4-spd. manual
Length (in.): 12
Ratios: 6.55:1 (1st); 3.58:1 (2nd); 1.57:1 (3rd); 1.00:1 (4th).
Used by: Chevrolet, in Blazers and pickups. This Muncie-built gearbox is often referred to as the SM 465 (the similar CH 465 uses a different cluster gear bearing assembly). The SM 465's cast-iron case is easily identified by being almost as wide as it is long, and by the stiffening ribs at the back of the case. It must be used with a matching bellhousing; instead of having a standard Chevy 4 11/16-inch bearing retainer, it uses a 5 1/8-inch retainer. It is very strong, but quite large and heavy, and the ratios above are the only ones available. 4-spd. manual
Length (in.): 12
Ratios: 6.55:1 (1st); 3.58:1 (2nd); 1.57:1 (3rd); 1.00:1 (4th).
Used by: Chevrolet, in Blazers and pickups. This Muncie-built gearbox is often referred to as the SM 465 (the similar CH 465 uses a different cluster gear bearing assembly). The SM 465's cast-iron case is easily identified by being almost as wide as it is long, and by the stiffening ribs at the back of the case. It must be used with a matching bellhousing; instead of having a standard Chevy 4 11/16-inch bearing retainer, it uses a 5 1/8-inch retainer. It is very strong, but quite large and heavy, and the ratios above are the only ones available.
Fuente: OffRoaders.com
http://www.offroaders.com/info/tech-...rans/trans.htm
Saludos,
OB1