Torque steer on an 87 5KTQ

[Steve Sherman]

I have recently noticed, after an alignment while playing with taking my
hands off the wheel on straight sections of  road, that there is a
noticable pull to the right while I have the gas pedal down.  The pull
definitely goes away when my foot comes off the gas pedal.

I am curious if other have noticed this too, and it is just a design
feature of the car; or if this might be due to something in my front
differential or possibly a stiff CV joint?

TIA