Some cases also have a machined boss on the lower drivers side toward the front with the date code stamped into them. The six cylinder bellhousings are 6. Also in '68 the 232 moved up to the t-14 and the 290 moved up to the T-15. The drive gear used with Dana 20 is not 6 spline, so you cannot bolt a Dana 18 to this transmission. It is heavy duty like the T-18, but a bit more prone to wear since bearings and lubrication are not as good. D1 starts in first gear, D2 starts in second gear. This was continued up to 1974.
D1 starts in first gear. Most internals swap between some of these trannies. All the big three used them in the late '70s; A toploader 4spd will slip right into the bellhousing and clutch. M-3X, M-5X, most internal parts bands. M-3X transmissions are all air cooled via torque convertor. It is an excellent transmission, but it doesn't have the low first off-roaders want. M-4X series aren't real performance trannies even if they're more heavy duty than M-37.
They all tend to have long input shafts compared to the Jeep and Ford T-18s. Use the original axle spring seats and bolt to the top of the new axle, use the original rear springs. This might work on other M-3X series trannies as well. It was also used by many other manufacturers such as Rolls Royce and Jaguar with an adapter ring. These two versions are not compatible. You can purchase high quality ring and pinion sets in various ratios, high quality rear end bearing overhaul kits including pinion bearings, pinion seal, crush sleeve, pinion nut, shims, ring gear bolts, marking compound and gasket.
The tube from the M-40 should fit the M-37 and the fittings from the outside of the case. The neutral safety switch was eliminated, as it was no longer needed. Some 304s in the small cars used the six cylinder bell. The difference was that the 196 had different dowel pin sizes. A disastrous fire in the factory forced makers to develop their own autos and ended its reign. If it's air cooled large hole in right side of bell, vent holes around hole where trans body bolts to bell it's a 3x.
See the interchange info below. The M-37 tube is hooked to the oil pan. It worked similar to a 2-speed automatic, having 1:1 direct drive and overdrive. There are myriad T5 boxes used, just within the Mustang world. Explorer axles are too wide. Both D positions automatically shifted up through the gears.
They were only used with the smallest V8s and shouldn't be confused with the M-1X series. . You will need one of those if doing interchange. This switch is usually mounted on the accelerator linkage. While the Borg Warner transmissions are found in the earlier cars, the Torque Flites are found in '72 and later cars.
This page also offers overall dimension, gear ratios, and number of gears available in each transmission, and originating year, make, and model. Most internals swap between some of these trannies. The servo arms that hold the bands push againts the case. Big engine fords have a 1. Shift-Command trannys used the now standard P-R-N-D-2-1 shift pattern.
These trannies could be manually shifted as well. . The fix for this is to drill a small hole. Shift Command has the capability of manually shifting each gear, and is the now traditional L, 2, D, N, R, P. Why I don't know they are not performance oriented and impossible to find stuff for, and transmission shops will push your car to the back lot while you have to try to find parts for them to even look at it.
See the interchange info below. All others used the 150-T for 232-304. This switch is usually mounted on the accelerator linkage. The inards in the cast iron units are much larger and stronger than those used in the aluminum case trannies and nothing interchanges. They can also be manually shifted. Inside there is a boss with a blind hole that accepts a tube that goes to the pump. Also some mid-size Chryslers with 318 got this tranny.
That last one is pretty much a guess, based on some of the co-development info. All others used the 150-T for 232-304. Most internals swap between some of these trannies. Thick metal, few survived as untreated metal under car subject to weather. They are believed to be 'Jeep only' transmissions. M-3X, M-5X, most internal parts bands.