[54chevrat]

have a van trans with a bolt on yoke need to install a slip yoke is this possible without internal work

[Crosley]

Originally Posted by 54chevrat

have a van trans with a bolt on yoke need to install a slip yoke is this possible without internal work

yes,

short style slip yoke fits onto all the shaft splines.

It is best to pull the tail housing off to see how / where the slip yoke hits the groove on the output shaft where an O-ring fits for the bolt on yoke...

simple , simple , deal

[54chevrat]

ok cool thanks 1 more ? the down shift wiring i think where would that get powered from th400 are new to me i ran a glide or a stick so any help would be great thanks ken

[Crosley]

Originally Posted by 54chevrat

ok cool thanks 1 more ? the down shift wiring i think where would that get powered from th400 are new to me i ran a glide or a stick so any help would be great thanks ken

12 volts is needed for down shift hook up.

Factory used a switch at the carb in early years , then a switch at the gas pedal on inside of the firewall in later years.

The switches were a sliding type that could activate at about 3/4 throttle and still allow full throttle ... un like a simple on/off push button switch.

Some guys have used an older motorcycle stop light switch with a spring on it , hooked to the carb.

You can drive the vehicle/ t-400 tranny fine with the power unhooked.

[M&M CUSTOM]

Like Crosley stated, along with the later fuel injected engines using the ECM to activate the circuit.