JD730

I'm going to stick to the diesel version of all the transmission models since thats what I know more about.

'89-early 91, 727, 3 speed, non-lockup, no overdrive, hydraulic control
late 91 to 93, A518(sometimes known as 46RH), 4 speed, non-lockup, overdrive, hydraulic control, overdrive is electric
94-95, 47RH(sometimes referred to as A618), 4 speed, lockup, overdrive, hydraulic control, overdrive and lockup are electric
96-early 03, 47RE, 4 speed, lockup, overdrive, electronic control