Help.....clutch is hard as a rock

[OutlawMotorsports17]

I unload the car Saturday at the track, clutch in working fine as it usually does, I go out for practice, I come in and I shift into low gear, and the car does not move, low gear and reverse will not work, I have a Brinn transmission and a small wilwood master cylinder, PLEASE HELP!

[OutlawMotorsports17]

And also the clutch pedal is like pressing on a brick wall!

[TALON75]

Pull the slave cylinder off the back and see if you can actuate it manually, if the clutch moves freely then it may not be internal, otherwise I would tear it down cause something is broke internally.

[Matt49]

May sound obvious but...isolate the problem.
Unhook the clutch line from the transmission and see if you can push in on the clutch pedal (have yourself something ready to catch fluid). If everything moves okay, the problem is in the slave cylinder in the transmission. If it is still locked up than the problem is in your master cylinder or something with the pedal itself.