[clinebarger]

Line Bias Valve.

The Line Bias Valve matches Line Pressure to Torque Rise. After about 60% throttle the Line Bias Valve starts to open & bleeds off Line Pressure.

The rate it opens varies on what Weight Spring is installed.

This is a BIG concern when installing a random 700R4 behind modified/Torquey engines because GM matches the Line Bias Valve Spring to each application.
A TPI Vette has a stiffer spring than a 4 cyl. S-10 for example.

The TransGo 700-jr has a Line Bias spring that works very well even with small Boost Valves & Even Better with Larger Boost Valves.

**NOTE, DO NOT block the Line Bias Valve, There are applications that would call for this, Like a Big Block that gets full throttle all the time, But then again....Why use a 700 in this circumstance??**