Vette(s): '78 Silver Anniversary T Top coupe,58k orig miles.
THM350 auto, 350 L48, JBM headers,Oyster White interior,.as of Nov '15 in process of painting.
IF you can get to the end of the vac line next to the firewall..buy a simple in line connection that fits the original line and some new vac hose and reconnect the line to the heater hose in line solenoid.. IF Stuff was working right and that line had >8 Hhg vacuum before..that should do it..
IF things in your hvac/A/C were not functioning properly and Compressor charge are up to snuff..Let me know..I can direct you to how to simply fix the problem..
BTW, IF you want to replace the entire hose that passes thru bulkhead..IT goes to the bypass solenoid switch which is accessed by removing the glove box interior.It's controlled by the temp cable that runs from the HVAC controls in the console..jim
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