Topic: Can't kill The Heat
in Forum: C3 Interior
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Former Member
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Spotsylvania, VA - USA
Joined: 1/20/2007
Posts: 293
Vette(s): 1977 Silver Coupe
I'll stop by this weekend and pick one up. I also read all the things the folks have heen doing to get the heat out. It looks like I have My work cut out for me.
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Be sure to get the valves for both sides and make sure you get the correct size valve for the hoses. You should have 5/8 and 3/4, but perhaps not. Doesn't hurt to check to see if you have two different size hoses.
Good Luck!
Good Luck!
Former Member
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Cramerton, NC - USA
Joined: 8/22/2006
Posts: 1094
Vette(s): black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion
Was changing out my heater hoses this weekend and discovered that my water diverter valve that alows / denies water to circulate to the heater core was not working correctly. While dealing with this problem I decided to install manual valves as mentioned in this thread. I found both the 5/8 and the 3/4 valves at NAPA. Total price for both was $42 but if it will cut the heat down in my car this summer, it will be well worth it. The valve designs should allow full flow to the core when they are opened.
Part numbers for the valves are 3/4 inch 660-1413 5/8 inch 660-1414
The stock valve on the car only closes when you turn the A/C on. Just in case anyone did not know that. 
Dave
Lifetime Member #116
Dave's '82 
Former Member
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Spotsylvania, VA - USA
Joined: 1/20/2007
Posts: 293
Vette(s): 1977 Silver Coupe
this is a followup question. when I had the right dash panel off yesterday, the heat cable to the heater door has an adjustment. I started twisting on it to see what would happen, Its actually and adjustment for the heater door. Now, where this connects on the heater there is a Button that it comes back on. and pushes when the cable pulls to closed. what is it and what does it do? velly velly curious.
Lifetime MemberIndianapolis, IN - USA
Joined: 9/3/2006
Posts: 2429
Vette(s): Silver 1974 Convertible - L82 4 speed
Low miles (was only 8,900 when I bought it in March 2006) - Now 54K miles. Original owner bought it as an investment for son's college expenses.
2008 Jetstream Blue Convertible
Years ago, I had a leaking heater core on my 76 Grand Prix, so I used a U-shaped piece of aluminum tubing and simply bypassed the core. No water went to it, so it didn't get hot, and the water that tried to go to it kept flowing back to the system. Do you suppose this could work for a Vette with unwanted heat issues?
By the way, how the he!! do I get to the heater hoses?! Are they inside that A/C box referenced in the thread that JimG linked in?
Thanks
I wanted a Corvette my whole life, but I never dreamed of all the wonderful people I would meet because of it!
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Former Member
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Spotsylvania, VA - USA
Joined: 1/20/2007
Posts: 293
Vette(s): 1977 Silver Coupe
heater hose accessed underneath the car I , couldn't figure out any other way
When I pulled the passenger side of the dash and saw the amount of corrosion on the vent/heater valves, I just bypassed my heater at the water pump. I'll start buying parts to do the entire corkpit and wont hook the heater up again until then.
Former Member
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Spotsylvania, VA - USA
Joined: 1/20/2007
Posts: 293
Vette(s): 1977 Silver Coupe
I still don't know what the button does
Lifetime MemberModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
The "button" is probably the compressor switch, for the A/C compressor.
Joel Adams
C3VR Lifetime Member #56 
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
in Forum: C3 Interior
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