|TRANS/AXLE||P51 F312 O-12|
|ENGINE||TOYOTA MOTOR CO.LTD.|
|C/TRA/TM||033 FB11 T312 W50|
|K40||alloy||4 speed manual, usually behind K engines|
|K50||alloy||5 speed manual, usually behind K engines|
|T40||alloy||4 speed manual, usually behind T engines|
|T50||alloy||5 speed manual, usually behind T engines.
Major internal revision part way through Corolla AE70.
|W40||steel||4 speed manual, usually behind R and M engines|
|W42||?||4 speed manual|
|W45||alloy||4 speed manual, behind Rand T engines|
|W50||steel||5 speed manual, usually behind R, M and early 1G engines|
|W51||steel||5 speed manual, usually behind later R and M engines|
|W52||?||5 speed manual|
|W55||alloy||5 speed manual, behind R and turbo T engines|
|W56||alloy||5 speed manual|
|W57||alloy||5 speed manual, behind G engines (Supra, Cressida)|
|W58||alloy||5 speed manual, behind M engines (Supra, Cressida)|
|P51||steel||5 speed manual, close ratio box usually behind 18R-G engines
Uses Porsche style syncromesh
|A30||?||3 speed auto, until August 1973|
|A40||?||3 speed auto, after August 1973|
|A40D||?||4 speed auto|
|4 speed manual, usually behind K, R and L engines in 4WD and cargo vehicles|
|?||5 speed manual, usually behind K, R and L engines in 4WD and cargo vehicles|
|H42||4 speed manual, land cruiser|
|G52||5 speed manual, in pickup and 4Runner|
The same gearbox can have different length rear extensions in different cars.
The same gearbox can have different bellhousings in different cars.
However, the central part can still be swapped.
Exception is late AE70 T50 rear extension will not fit earlier T50 core.
Every entry in the above table requires a unique bellhousing.
The A40 column includes the A20/A30/A40/A40D .
The W50 column includes the W40/W42/W50/W52/P51 .
The W55 column includes the W45/W55/W56/W57/W58 .
The T50 column includes the T40/T50 .
The T and G series engines have different bellhousings (clutch cylinder on other side) but are otherwise interchangeable.
W series gearboxes have a separate bellhousing.
Different bellhousings are used to connect a W50 gearbox to an R or M series engine.
Different bellhousings are used to connect a W55 gearbox to an R or T series engine.
Alloy W5# gearboxes are interchangeable with each other.
Alloy and steel W5# gearboxes are not interchangeable with each other.
W50 bellhousings do not fit the W55 gearbox and vice versa.
W55 bellhousings do fit the W56 and W57 gearboxes and vice versa.
W58 bellhousings are only compatible with W58 gearboxes.
All W## gearboxes after 1970 had the same output spline as the A## automatic gearboxes.
Some cars such as the MX13 Mark II came only with a W40 that had a unique rear extension and no W50 option.
It might be possible to use a W50 core combined with the old W40 bellhousing and rear extension.
All members of an engine family (eg 4R and 18R) can share gearboxes.
Input shaft splines may differ.
Flywheels and clutch diaphrams usually differ.
Some Celicas, Corollas and Coronas from around 1982 had the 3T-GTE engine with the alloy W55 gearbox.
Around this time the 18R-G was also available with the W55.
Different bellhousings were used.
Bellhousings for T and G engines seem to be compatible.
The Japanese GX51 Cresta has a 1G with W50 gearbox.
Any W50 and this rare Cresta bellhousing could be used behind a 3T-GTE.
The 3T-GTE normally has a bellhousing for a W55 but can use a 1G bellhousing (clutch slave on other side).
I have heard rumours that bellhousings for C engines are the same for either S or A engines.
One of these rumuors must be false.
Being compatible with A engines is more likely to be true.
The ST141 Corona uses a 2S engine mounted north-south.
Use this gearbox to put a 3S engine into older cars.
You will probably still have problems with the distributor hitting the firewall but you can use a crank angle sensor with an aftermarket computer.
Newer gearboxes have codes at the end.