heat question on an 87 thats been converted to carb

[hinkv10]

Hi with help from this forum I just finished replacing the heater core in my heater box but haven't installed it back in the truck yet. I removed the evaporator and purchased an ac delete panel from classic industries which I will be installing tommorrow.

My question is that my truck has been converted to a Edelbrock carb setup. I see on the front of the carb there is a vacumm port that has been blocked off and there is no vacumn line hooked up to the valve on the pass side front kick panel. When I got the truck it did not have a thermostat and even though the heater core was hooked up, no heat. My first question is do I need to run a vacumn line to the valve in the kick panel to get my heat to work? Or cool air in the summer? I'm having trouble posting pics but will borrow a couple from the post on replacing the heater core. Thanks in advance

 

[89Suburban]

That is an expensive delete cover. Is there a reason you did not just convert the whole system to a heat only setup? If you use the a/c under dash housing you will need the vacuum hooked up for the controls.

 

[hinkv10]

At the time a buddy of mine was buying a couple of things from classic industries and needed about $200 more to reach $1000. So I bought the ac delete cover and a couple of other things and didn't have to pay any shipping. I called a couple of salvage yards and the only 2 that responded wanted big money. Figured this way would be easier. I have 3 vacumn lines hooked up the two valves in back and the one towards the driver side. I just can't find another one to hook up to the kick panel. I guess I'll look again.

 

[89Suburban]

Here is the hookup for the vac hose to the kick panel door. It goes into a tee, one other line running to the control panel and one goes through the upper firewall. I am not sure if the is the vac feed from the motor or going to a fresh air door control servo under the wiper cowl on the pass side.

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[89Suburban]

At the time a buddy of mine was buying a couple of things from classic industries and needed about $200 more to reach $1000. So I bought the ac delete cover and a couple of other things and didn't have to pay any shipping. I called a couple of salvage yards and the only 2 that responded wanted big money. Figured this way would be easier. I have 3 vacumn lines hooked up the two valves in back and the one towards the driver side. I just can't find another one to hook up to the kick panel. I guess I'll look again.

I got a complete heat only setup out of the pull a part yard to put in mine.

 

[Jims86]

All of those vac lines under the dash go to the control switch, which has a line runnung out the firewall to a manifold vacuum port, in the #8 intake runner.

 

[Swims350]

should be a round ball thing underhood the vac. goes to our 86 was that way.

As for heat only setup that requires firewall fab to plug off the a/c hole and then I think th elines come out for the heater core in the wrong spot, not sure on if they blower motor is in the same place or not.

 

[hinkv10]

Thanks for the replies and pics. I was able to find the vacumn line and hook it up to the kick panel. It tee's off and goes into the firewall. I cleaned up the engine bay and found a set of pliers, the fuel line for the missing dr side fuel tank (that will be another post) and a vacumn line from the firewall and hanging by the distributor. I also found another vacumn line coming off the distributor and not hooked up. Tommorrow I am going to pull of the cowl and see if that vacumn line is the one connected to the heater.

I will post some pics when I get it all sorted out

 

[Driver4r]

The vacume line coming off of the Distributor is For the vacume advance.