Damn, I was bleeding the brakes and I let the fluid resevoir get too low. Actually bone dry, there was nothing left all the way down to the caliper. Did I mess anything up inside the master cylinder or can I just fill it up and re-bleed?

 

you will need to bleed the master cylinder then the brake lines.

 

You may want to try to gravity bleed the system out first. Starting with the bleeder valve furthest from the master, fill your master and leave the cap off. Then go to the bleeder at the right rear and wait until fluid starts flowing. When and if it flows, close it and go to the left rear. Open that bleeder until it flows. Then the right front and then the left front. Don't step on the brake when trying to gravity bleed. If it doesn't bleed out then you probly need to bleed the master.

------------------
1988 Camaro Sport Coupe: Orignally: 305 TBI 700r4
Now: 1974 350CI, 2bolt,.030 over, Badger Flat Head Pistons w/ valve relief, Melling high performance street cam, GM Cast Vortec Heads, Edelbrock RPM Air Gap Intake, Edelbrock 600cfm w/ electric choke, GM HEI w/ vacuum advance, Weiand Low Profile Air Cleaner, Mallory 5 port Fuel Pressure Regulator, Mr. Gasket Throttle Cable Bracket, Corvette Shift Servo, 16" IROC Wheels, Every thing else is STOCK
Soon: 3.73 or 3.42, Gears, Hoosier Q/T

 

Put fluid in there and run with it, just bleed it again... I have done that before and usually once its wet with fluid you can get the bubbles out fairly easily.