1978 K10 A/C Help Please!

[nealdonoho]

I just purchased a 1978 Chevrolet K10 4wd with a 350 in it. It has the controls for A/C in the cab, BUT everything under the hood is gone. I want to install it back, but I'm not sure what I need and the cheapest place to find it. I'm confused too because I have seen both a short and long style compressor. It does have aftermarket headers if that matters at all, read that somewhere that it makes a difference??? I have no clue on what parts I need and I would like to do most of the work myself and have my local shop charge it. Can anyone help on this please?

 

[chengny]

Wiring diagram:

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The compressor you need will be determined by the style of bracketing that is on the engine. There are 2 basic designs; the A-6 (axial 6 pistons = the long type) or the R-4 (radial 4 pistons = the short/pancake style).

Most likely the bracketing will be set up for an A-6.

You must be registered for see images attach

It does have aftermarket headers if that matters at all, read that somewhere that it makes a difference???

Looks like there is a bracket that is bolted on to the stock maifold. Probably can be worked around to fit on your headers.
Compressor choices at Rockauto:

http://www.rockauto.com/catalog/raframecatalog.php

 

[nealdonoho]

Thanks so much for the response! If I can modify a bracket, you are saying I could use either the A6 or R4 compressor, correct? Just wondering the pros and cons on going one way or the other.

 

[nealdonoho]

By the way, where can I get a manual that has info like this and other things? I want to learn anything and everything about this particular truck and that has a lot of diagrams like the pics you sent.

 

[chengny]

The R-4 compressors are more compact and the bracketing for the 350 engine is easier to find.


Download 1978 C/K manuals below.

Service manual:

http://depositfiles.com/files/dv06qr059

Unit Repair manual:

http://depositfiles.com/files/if7etwhbc

Wiring diagrams:

http://depositfiles.com/files/hk0bjlwjo

If you are not familiar with Deposit Files see the bottom of this page for a tutorial:

http://www.gmsquarebody.com/forum/showthread.php?t=6290

 

[chevyk10]

I have almost everything to flip one over. Do you have the box inside and outside for A/C? I have a new sanden compressor for vbelt with brackets and the bracket you need for the headers as well. I have the box that's on the outside of the firewall and some lines that need an end. You would need the condenser. I have an evaporator. I can make you a good deal. I'm not sure how much to ship. If interested pm me and I will send pics.


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