Quote:

I wouldnt put the adjustable prop valve on the rear
line... its used to take the spike out if you hit the
pedal hard... skinny fronts would just skid if you hit
the pedal hard... the pressure will equalize after a
bit of time... but by then you not on a skike any
longer....the slicks have more stopping power over
skinny fronts


Good point Mike has there. Maybe start with just the oem proportioning valve first? If you experience front tire skid, put the adjustable valve in the front line. My concerns for not using the oem P valve is that without it you eliminate the metering valve ( sometimes referred to as a hold off valve ). This valve prevents fluid pressure to the front disc brakes under light brake application. It holds off pressure to the discs until pressure to the rear brakes overcomes the rear shoe return springs. With a light car, skinny fronts, heavy rear shoe return springs ( or any combo of the above ) the front tires could skid under light brake applications - like during staging. If you decide to go with just the adjustable valve, Mikes suggestion of putting it in the front line might be the best solution.

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