Toyota K transmission

Toyota Motor Corporation's K family is a series of 4 and 5-speed light/medium-duty transmissions found in Toyota Corollas and Starlets.

K40
Oil capacity: 3.0 imp pints(1.7L)

Synchromesh on all Forward gears

Ratios: Applications:
 * First Gear: 3.769:1
 * Second Gear: 2.250:1
 * Third Gear: 1.405:1
 * Fourth Gear: 1.010:1
 * Reverse Gear: 4.316:1
 * Most 4-speed RWD Starlets and Corollas with K-series engines
 * KM20 series LiteAces that were fitted with K-series engines had a standard K40 fitted with a column shifter
 * Toyota Racing Development** has produced a fourth gear closer to third in Ratio

K50/K51
Oil capacity:4.2 Imp pints(2.45L)

Synchromesh on all Forward Gears

Ratios (K50):
 * First Gear: 3.789:1
 * Second Gear: 2.220:1
 * Third Gear: 1.435:1
 * Fourth Gear: 1.000:1
 * Fifth Gear: 0.865:1
 * Reverse gear: 4.316:1

or (K51)

or
 * First Gear: 3.789:1
 * Second Gear: 2.124:1
 * Third Gear: 1.323:1
 * Fourth Gear: 1.000:1
 * Fifth Gear: 0.865:1
 * Reverse gear: 4.316:1

TRD GEAR SETS TRD also sold a close ratio gear sets in the 70's and 80's (P/N 33030-KP601) for the K-50 with the following ratio:
 * 1st: 2.695
 * 2nd: 1.619
 * 3rd: 1.235
 * 4th: 1.000
 * 5th: 0.892

Applications:
 * Most 5-speed RWD Starlets and Corollas with K-series engines.
 * 1986 Corolla with 3A-U and 4A-U engines.
 * KM20 series LiteAces were fitted with K50 transmissions to 4K and 5K engines as an option, and to the 7K as standard.