proportional valve for 68 camaro

[tankhunter]

i installed 4 piston disc willwood brakes on all 4 corners of my 68 camaro but i was wondering if the proportional valve should be on the front brakes or the rear

[Apogee]

Front brakes should always be full line pressure...always, 100% of the time. Always. Just to be clear...I mean always. Not to beat a dead horse, but always. I mean it. I'm not kidding either.

But seriously, you run full pressure to the fronts and then you proportion the rear to match the setup of your car. The point to reducing the rate of pressure increase to the rear relative to the front is to compensate for forward weight transfer during braking. The quicker you decelerate, the more weight you transfer to the front tires and off of the rears, so you can't tolerate as much pressure at the rear calipers under more aggressive stops, otherwise you'd induce lockup and an understeer condition.

Under normal street driving and lower deceleration rates though, having a proportioning valve will have very little effect since you will rarely exceed the knee point where the proportioning valve kicks in. An adjustable proportioning valve allows you to move the knee-point up or down the pressure-pressure curve to better tune it to your vehicle since odds are it is no longer stock.

HTH,
Tobin
KORE3

[cheapthrillz]

https://static1.pt-content.com/images/noimg.gif

Please do not put the prop valve in the front circuit..... that would be very bad!