Brake help please

[VetteVet]

Checking brake pedal is a feel thing by lightly pressing on the pedal with your hand with the engine off and no vacuum for the booster. You should be able to move the pedal just a little and then you'll feel a light pressure when the pedal rod contacts the master cylinder booster rod. If you don't feel it or can't tell then you might need to shorten the rod at the brake pedal. I don't have a picture of the rod but you should be able to figure it out. If you've done assembly on this system this may be your problem.

I would also loosen the two fittings on the master cylinder lines and press on the brakes and see if you get fluid out of the master. Brake fluid is death on paint so cover the lines so they don't get fluid on your fenders or firewall.

If you get fluid here then go to the right rear wheel cylinder and open the bleeder while a helper pumps the brake pedal. If you get fluid then go to the left cylinder and repeat the process. If you get fluid there then move to the right front caliper and then to the left.

What you are doing is checking for fluid flow to the brakes and whether the master cylinder is pushing fluid. When you establish fluid flow then you can start the bleeding process.
Once all the air is out of the system the brakes should work.

I would say that it is unlikely that all four brakes would be frozen although it is possible.