Proportioning valve
Thread Starter
Melting Slicks
Joined: Sep 2010
Posts: 3,321
Likes: 699
Proportioning valve
As I continue to make progress on my LS swap it's time for brakes.
I'm going with the stock C3 brakes.
Question is on the proportioning valve. Would it be of any benefit to go with a Wilwood adjustable in the rear line or stick with the stock valve. As I understand the stock valve is more just a junction for the brake lines and place for the brake sensor.
I've used the Wilwood valve before with good success. I don't care if I lose the brake sensor light.
I'm going with the stock C3 brakes.
Question is on the proportioning valve. Would it be of any benefit to go with a Wilwood adjustable in the rear line or stick with the stock valve. As I understand the stock valve is more just a junction for the brake lines and place for the brake sensor.
I've used the Wilwood valve before with good success. I don't care if I lose the brake sensor light.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
The stock set up is not a proportioning valve; it's a pressure differential switch. If you want to be able to adjust front and rear pressures, you'll have to go with the aftermarket valve.
Melting Slicks
Joined: May 2012
Posts: 2,192
Likes: 344
From: Allenton Wisconsin
I have the Wilwood adj valve in the 6t8. Between finding 1/4 inch fittings, looking inside the valve itself and seeing those tiny holes then machining to a larger size, plumbing in I found it to be a real PITA. Once it's set all is done and works well. T
Drifting
Joined: Mar 2011
Posts: 1,886
Likes: 9
The basic proportioning of the front/rear brake balance is done on a C3, or disc brake C2, by using different size caliper pistons. Generally, the factory wants the car to be stable during all conditions, especially rain. A setup for a racecar used only in dry conditions will be different.
Le Mans Master
Joined: Sep 2003
Posts: 8,812
Likes: 2,029
From: eastern NC
If you are using the stock Corvette calipers and master cylinder, there should be no reason to add a proportioning valve to your brake system. As others have mentioned, differential pressure to the front and rear brakes is controlled by the use of larger pistons in the front calipers and smaller ones in the rear calipers.
On the other hand, if you plan to road race your Corvette and/or use different brake pads in the front and rear, you may find it beneficial to adjust the front to rear brake bias further by adding a proportioning valve.
Good luck... GUSTO
On the other hand, if you plan to road race your Corvette and/or use different brake pads in the front and rear, you may find it beneficial to adjust the front to rear brake bias further by adding a proportioning valve.
Good luck... GUSTO
