steering locked
 

I have a 66 289 with power steering. While turning the car the wheels locked to the left and will not unlock. Lifted both wheels off ground and still will not free itself. Power steering pump pully is turning and as far as I can tell still working. Does anyone have any idea what happened?
Thanks

Power steering ram? Valve? Check to make sure nothing is visibly broke.

------------------
67'fastback-Edelbrock carb,intake,cam,valve springs.Rhode lifters, CompCam rocker arms, windage tray,cerama coated headers,dual flows with H-pipe, modded c-4,tci stall converter,perma cool electric fan,aluminum water pump,griffen aluminum radiator,accel 8.8 cable,wide cap distriburator,magnetic pick up,v-matic hurst shifter,edelbrock performer nitrous, carter electric fuel pump,ignitor coil,solid motor mounts,magna racing suspension,poly urathane bushings,under rider traction bars, comp. eng. s