I have a 1986 Trans Am with front and rear disc, the rear are iron calipers. I am planning to buy a fourth gen rear with disc brakes, but I just want to make sure I have all of this straight.

My prop valve will work with the new brakes, because I already have discs?

My master cylinder is sufficient for the new PBR brakes?

I will be able to tie the brake lines on the fourth gen rear into my t block in the rear, because my fittings are all metric?

Thanks for the help, Ben

 

prop will work, adjustable will be ideal, but it will work
master is fine
brake lines are the same thread, should be fine, but i believe the later 4th gen that have 4 channel abs have 2 rear flex lines?

you will need custom parking brake cables available from flynbye and hawks. Or you have to swap the e brake handle, pull cable and equalizer bar from a later 4th gen as well.

 

While it will work, the bias will be off as there are different valves for disc/drum, disc/standard disc, and disc/1LE. I'd suggest the first design 1LE valve for a direct bolt-in or an after market adjustable which will require some plumbing but is probably the better choice. 86 would be able to provide more specific info about that, I believe.

JamesC

 

Ok it's becoming clear now. The 1le prop valve is different than just a j65 prop valve?

 

All four-wheel disc cars are J65, but the 1LE valve is different than the standard valve.

JamesC

 

Ed Miller has all the parts/knowledge you'll need for any thirdgen brake related problem. His front C5 kit was stupid easy and brake line/ebrake cable stuff makes a fourthgen rear swap practically fall in. He's always swamped as it's a small operation, so you need to be patient. But, IMHO, it's worth it.