The Stovebolt Site Forums The Parking Lot '60-'66 Trucks Heating my '65!

Aloha my good friends! My Delux heater is in good working condition, but it just doesn't get hot enough in this -15 degree weather. It defrosts my windows, keeps the cab warm, just not warm enough to keep the wife and crib midget comfortable. I've got a thick piece of cardboard in front of my radiator, which helps a lot. I replaced the heater core, hoses, water pump, and thermostat this fall before the snow hit, so I am sure it's all good to go.
I was thinking of a set up like the 60-61 trucks had with the heating solenoid under the dash, the little coil doo-dad on the switch. Any ideas as to how I could go about getting more heat? The volume is good, it's just darned cool. Looks don't matter here, it's all about the creature comforts right now. Your input is most welcome cause this guy is gonna be cruising alone this winter season if I can't figure something out. -Will

by "the little coil doo-dad on the switch" you must mean the dropping resistor that allows multiple fan speeds, which would likely mean less heat if all you have is full on/off for the fan sorry Will, sounds like you've done about all you can, these trucks weren't made for subzero cruising, they were made as workin mens trucks, gonna hafta get the family new parkas for Christmas

Bill

Alaska?? More heater for sure.

Red Dot makes heaters with fan in em that may fit under the seat(s). Gonn be a bit pricy

Dan Bentler

Seat Heaters... my wife's Benz has them and they are great. Depending on how good your upholstery is you could probably get some that are like seat covers.

http://heaterseats.com/

Put some carpet down, insulate the back of the cab and repair/replace any rubber allowing wind leaks. I drove a 64 C10 everyday for 8 years, heat wasn't ever a problem (and we do get as cold as Alaska here),
Scott

Hello, i have a cousin stationed at Elmandorf. Woo Hoo cold! You say you have a deluxe heater? Disregard this if you have already checked it. Do you also have the little door that opens and closes that is inside the heater box on the oustside of the firewall? Is it working properly? Have you confirmed that the heater core gets warm, by opening that access cover on the heater box.Thats the only 2 things i can come up with.Hope this helps.

I'll agree with Scott: you're probably losing heat as fast as you're making it. More insulation and sealing will help.
Blocking all air flow through the radiator is risky, but I've covered about 3/4 of mine to get more heat without any problems.

cm

What temp thermostat? You can usually run a 195* even in these old engines in winter. The heater core could also be partially clogged, new ones are reasonable.

Back flush your heater core, make sure no stuff blocking air flow through core........few more tips

As stated, it sounds like you are letting in as much cold air as you are hot air.
With the deluxe heater you can pull in outside air. The flapper valve is located at the top of the heater core just aft of the heater core itself. Make sure that the cable running to this flapper valve is connected, adjusted and working as it should. The cable connection is located on the passenger side of the heater assembly on the outside of the firewall, near the firewall.
As well this flapper has a foam rubber seal that can become deteriorated. This alone can cause cold air to leak past.
As 48bigtrucks says, you should have more than enough heat.

With the engine warmed up & the heater on, grab the heater hoses one at a time. The in going hose (usually smaller in dia.) & the out going should both be hot enough that you can not hold on to them for more then 3-5 seconds. If one is not as hot as the other then you have a restiction. It could be in the control valve if it has one. You may need a new therm. like Fleetside say's. A 195 would be ok but you may have to change it back in the summer.

I am new here after aquiring a 65 C-30 dually with a dump bed, (Which I do use for hauling) and I had the same issue with the heater.
I did the new water pump, 195deg thermostat in a late 70's 250), and flushed and backflushed the heater core. I was also thinking about running a hose of some sort from the suction of the blower motor, rigging it up to use heat coming off the exaust manifold (like the old VW's) and use pre-heated air to blow over the heater core. It takes a lot of heat to make really cold air hot. I hope this helps. As I am new here, any help with my new ride will be greatly appreciated.

Yeah be sure to check that flapper valve. I cut a piece of carpet and glued it to the flapper where the foam had been to help seal it up..also replaced the core. Heater has been workin good enough and its my daily driver up here. was -36C a couple weeks ago. ..I do dress for it though.

I know you can buy an additional under the seat heater core that you can hook up to your heater lines. It probably wouldn't be too hard to make out of another heater core. Put it in a metal box with a small electric fan and put holes in the metal box. Changing the thermostat isn't going to fix the problem IMHO. Your heater core is probably corroded.
Also, check the tubes coming from the heater housing going up to the vents. They are probably cracked and ripped. They are just a paper like fiber around a coiled wire and they are old and deteriorated.

Shop around and find yourself a Stewart Warner Southwind Heater. You'll be driving around with the windows open.