reardiscs

[clean8485]

Wasted Talent, you might want to check the local laws where you live regarding eliminating the park brake system on your car. In most areas, having a working park brake system is required by law. Look at it this way-if it wasn't required or necessary, then the vehicle manufacturer probably wouldn't have put it on the vehicle to begin with. Besides, in some cases, it really can help to slow you down if your main braking system has a failure.

 

[axisg]

Good info! I was thinking about doing the LS1 swap all the way around but I didn't want to start touching the prop valve, or the lines. When you bled your brakes did you pressure bleed them while pushing or pulling the thing on the valve or no?

I just bled my brakes as normal, prop valve never moved. I did the fronts and rears at the same time so we replaced all the fluid and bled the brakes 3 times while the car was on the hoist as it was easier to do it then. And I didn't consider the LS1 front brakes as the Blazer brakes clear the factory 15" wheels ( and I don't have budget for new wheels and tires ).

 

[WASTEDTALENT]

Wasted Talent, you might want to check the local laws where you live regarding eliminating the park brake system on your car. In most areas, having a working park brake system is required by law. Look at it this way-if it wasn't required or necessary, then the vehicle manufacturer probably wouldn't have put it on the vehicle to begin with. Besides, in some cases, it really can help to slow you down if your main braking system has a failure.

i live in washington state we dont get smog test or our cars inspected,

 

[pontiacgp]

some people that did the rear disc conversion that say they needed the prop valve then there are some that say they didn't change a thing and the original works fine. I guess you will have to do the conversion & see how the brakes are then go fom there. You can use calipers off a 79-85 eldorado with the e-brake built in if you wanted to keep it.

the rear brakes on a disk/drum set up need a residual valve to stop the retraction springs from seating the wheel cylinder pistons. The residual valve is in the proportioning valve and that should be changed to make sure the rear disks don't drag. The residual pressure for a drum brake is 10 lbs and for a disk brake it's 2 lbs. With the master sitting higher than the calipers gravity will help the fluid not to back up but it is safer to use a 2 lbs residual valve in the line with an adjustable proportioning valve so you can set the bias for your set up....