I have had the same problem, the best solution was to give the power steering components the float test (throw it in a lake, if it floats it is still good)
If you want to keep the power steering, you may want to try to shield the lines from heat using header wrap or thermal tape.
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67 Fastback - Arctic White Pearl paint
351W ,Trick Flow Aluminum Heads, Edelbrock TorkerII, Comp. Cam, Performance Automatic C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars.
My 351W Fastback
