Optional factory ac in 1970? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

djw32 · 05-03-2012, 01:50 AM

My truck has factory optional ac on it. I need to replace the hoses inside the cab? Can I assume the hoses in my truck are the same that came with factory ac?
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JimKshortstep4x4 · 05-03-2012, 08:37 AM

I have not seen the optional AC system but I have to believe that the AC hoses are different in that all factory AC hoses are on the outside of the firewall and do not go inside the cab.

New hoses can be made up if yours are bad.

Jim

Lee H · 05-03-2012, 09:40 AM

I'm guessing that the duct hoses are different from add on AC vs factory AC. You'll have to measure yours and try to match them up, should not be had to find them.
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davepl · 05-03-2012, 04:54 PM

Not sure what the difference between "factory" and "factory optional". If you meant dealer-installed or aftermarket, it's most likely different. If it's below the dash, it's certainly different.

That said, the tube kits are cheap enough that if you check the diameters you might still be able to buy a kit and make them work.

05-03-2012, 01:50 AM	#1
djw32 Registered User Join Date: May 2006 Location: So.Cal Posts: 542	Optional factory ac in 1970? My truck has factory optional ac on it. I need to replace the hoses inside the cab? Can I assume the hoses in my truck are the same that came with factory ac? Posted via Mobile Device

05-03-2012, 08:37 AM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: Optional factory ac in 1970? I have not seen the optional AC system but I have to believe that the AC hoses are different in that all factory AC hoses are on the outside of the firewall and do not go inside the cab. New hoses can be made up if yours are bad. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC Last edited by JimKshortstep4x4; 05-03-2012 at 08:38 AM. Reason: wording

05-03-2012, 09:40 AM	#3
Lee H Registered User Join Date: Jun 2010 Location: Upland Ca Posts: 4,147	Re: Optional factory ac in 1970? I'm guessing that the duct hoses are different from add on AC vs factory AC. You'll have to measure yours and try to match them up, should not be had to find them. Posted via Mobile Device __________________ 1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703

05-03-2012, 04:54 PM	#4
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: Optional factory ac in 1970? Not sure what the difference between "factory" and "factory optional". If you meant dealer-installed or aftermarket, it's most likely different. If it's below the dash, it's certainly different. That said, the tube kits are cheap enough that if you check the diameters you might still be able to buy a kit and make them work. __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible



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