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Old 02-12-2007, 09:59 AM
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One more 79' firebird question??

Hey guys, I have to say, this site has helped me so much in my build thanks to everybody that has helped.. i have another question 79 firebird has a 403 with air-conditioning.. i do not want to hook my air conditioner back up..but if i dont, will i still have heat?? will everything still work properly??

thanks alot

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Old 02-12-2007, 10:11 AM
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There's no reason the heat shouldn't work without the A/C. The defrost might not be as efficient, since it runs the compressor to remove moisture from the defroster air, but that's not a big deal. BTW, I have a '79 T/A with a 403 and A/C, too.

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Old 02-12-2007, 10:45 AM
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Agreed. The A/C system's job is to make a little radiator inside the blower box cold. If you don't hook it up, that little radiator doesn't get cold and you don't have cold/dry air. The heat will still work fine.
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Old 02-12-2007, 01:07 PM
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Just to clarify, the posts above are correct in that simply not hooking up the A/C compressor will not effect the heat. If you start ripping out all the vacuum lines, however, you may remove one that's needed to move the doors in the heater box from hot to cold or from heat to defrost. Get a factory service manual to figure out what stays and what goes.
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