replacing the th350 cause of it's overdrive gearing.
but without the stock computer module,
all of these transmissions need a torque converter lockup modification.
from a simple rewire and toggle switch,
to the above universal kit.
on the early style 1985 700r4 in the Hurtlocker Truck.
This Painless kit is used in all models up to the 90's.
is the later models that have more intricate computerized controls,
are dumbed down to use the early 80's pressure switch and torque converter solenoid/valve.
The parts I swapped were virtually identical,
and the directions were to remove all other internal wiring,
used on the later models additional switches.
The toggle switch is side-graded to this brake and vacuum switch,
making driving more idiot proof.
Possibly easier, possibly not.
make sure to either tap your original pan for a drain plug,
or get an aftermarket pan.
There was no way I was gonna waste a gallon of basically new fluid!