Tech:Engine/K Series/Gearboxes

There are a few options for adapting a gearbox to a K series motor, So here is a guide is to what is out there..

K40/K50 (Toyota Factory 4/5 Speed manual)

The K40 or K50 gearbox was factory fitted behind 3K/4K/5K motors. They are the most common gearbox in early KE Corollas. TRD gearsets were available for K50 gearboxes.

T40/T50(Toyota Factory 4/5 Speed Manual)

The T50 gearbox is a lot stronger than the K50 gearbox and is a split casing design. You can still purchase close ratio gearsets for the T50 gearboxes through TRD. The T40 or T50 gearbox can be adapted to a K series motor with a K-T Bellhousing,

The K-T Bellhousing came in a few different forms.

1. Cable clutch K-T Bellhousing, Extremely rare, Easier to install in earlier KE Corollas as you don't need to install a hydraulic clutch.

2. Hydraulic clutch K-T Bellhousing, Rare, Requires hydraulic clutch setup to be installed.

3. TRD Upright bellhousing, Like the Holy Grail if you can find one, Cable clutch, Designed to allow for the positioning of an upright K motor.