adjustable proportion valves??

[Apogee]

You haven't specified the application, however you do not want to add a proportioning valve if you already have one in the system, so if the car currently has a proportioning valve of any kind, it should be removed or gutted before you add another one. Two proportioning valves in the same circuit is no bueno. If you do order the distribution block linked to above, Wilwood #260-11179, then I would assume that you're going to be fabricating new hard lines for the car. Is that correct? All of the inlet/outlet ports are 3/8-24 inverted flare, the standard tube nut size for 3/16" hard lines.

Based on your handle "bbc monte", I can only surmise that you may have something from a 1970 to a 2007 Monte Carlo. Even if we rule out the front-wheel drive applications, there are still several brake plumbing configurations to choose from, but we can be more specific if you provide more information.

FWIW, I would remove the pressure sensor from the Wilwood 260-11179 distribution block and replace it with an 1/8" NPT plug if you're not going to use it. The electro-mechanical switch on most GM pedal assemblies is a much more reliable means for brake light actuation and doesn't have the hysteresis (pressure differential between turning on and off) associated with that type of pressure sensor.

Tobin
KORE3