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A couple questions for the Boss regarding the proportioning and shuttle valve. Last year, I installed a set of Wilwood Superlites, 1 1/8" bore master cylinder, (stock booster), large ventilated rotors, and residual valves. When I made the change, I removed the stock proportioning valve since I have 17" wheels and 245s/335s for front/rear rubber. I left the shuttle valve because it made for easier plumbing at the time. I was very happy with the results, but I now have the car apart and figured I may as well run stainless lines. Having read your remarks about the shuttle valve a previous posting, I'm inclined to eliminate it to clean up the plumbing. I see there are two electrical connections to the shuttle valve, one with a single lead (the wear indicator?), and another with a pair of leads for what I presume to be a pressure switch for the brake lights. Is this correct? If so, can you merely plumb the P-switch into either front or rear circuit to maintain functionaility? -I don't care about the pad wear indicator.
I also have a wilwood proportioning valve but have been advised by one of the Pantera after-marketers to leave it out. The reason given was that I wouldn't be able to lock up my wide rears before the fronts and the majority of "whoh-now" of course comes from fronts anyway. This was indeed the case when I wrung the system out. It seems that there could be a little stopping power left on the table. It seems unthinkable, but if this is the case, should the front brake circuit be biased down instead of the rears? Will it provide a little more whoh at the expense of increased peddle pressure?

What's typical? -thanks.
Original Post
Correct- most Panteras including race cars don't use (or need) proportioning valves; just more complication. I'd remove the shuttle valve, discard the pad wear indicator and make up a tee for the (metric thread) brake light switch in the front brake circuit. If you want/need even more brake and you have replaced the toy stock rear calipers, try playing around with different pad compounds- Wilwoods have at least three different pad compounds available.
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