Jerry,
Corvette central sells a heater control valve seal kit, Part number 451106 for 56-57. I did to mine and works fine.
They also have replacement valves.
If you get a new elbow for the other hose, be advised it does not have nipples or a ridge to help seal the hose to the elbow. They just ship you a 90 degree copper fitting. I made a nipple by getting some small brass tubing fittings that slipped over the elbow and soldered them in place. It is hidden beneath the hose anyway and does not show.
Ted
Corvette central sells a heater control valve seal kit, Part number 451106 for 56-57. I did to mine and works fine.
They also have replacement valves.
If you get a new elbow for the other hose, be advised it does not have nipples or a ridge to help seal the hose to the elbow. They just ship you a 90 degree copper fitting. I made a nipple by getting some small brass tubing fittings that slipped over the elbow and soldered them in place. It is hidden beneath the hose anyway and does not show.
Ted