Proportioning valve?

Could you have air in the lines to the front or maybe in the brake master cylinder's front section? Was the master ever bench bled? If you run the master dry when changing brake parts, sometimes you have to remove it and bench bleed it before it will give even pressure out again.

Most modern proportioning valves are called combination valves that set off a red light in the above situation of air in one side of the brake circuit. You don't have that now.

I am still suspicious about the size of the back shoes. If they are too big they throw the braking pressures all off. The levering action will be off and when it comes to lever action, they are pretty fine tuned.

Mike

I'm still using the stock single circuit master cylinder so even if there were air trapped in the master it would be affecting both circuits equally... I really wanted to get everything working well with the stock setup before I started messing with any modifications. I have thought about converting to a dual circuit MC but obviously if I'd thrown that in the mix I'd really be lost now.

I hear ya, but at this point I don't see a choice but to throw a prop valve in there as I don't know anyone that will "arc" the shoes for me, the only way to get them worn in is to drive the car which I can't safely do at this time...

nate

You could arc them yourself. Get some self adhesive 200 grit sandpaper and stick it inside the drum. Rotate the drum by hand and use the parking brake to apply SLIGHT pressure while sanding the shoes. They will then match the arc of the drums.