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#1 |
Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,482
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A/c lines and hoses on a 67
All the hoses in the trucks I have seen, most 70 to 72, have had the hoses clamped when they were made. On my 67 it looks like they used special hose clamps with a tab on them to locate the clamp spot. I assume this is factory. Will these leak continually or will they work? This is the only truck I have ever seen this on. Any one still have this on their working ac system?
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#2 |
Registered User
Join Date: Aug 2016
Location: Idaho Falls, ID
Posts: 233
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Re: A/c lines and hoses on a 67
I still have these on my 69 GMC. They seem to be holding just fine. I do plan to swap to clamped hoses once the begin to leak.
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#3 |
Senior Member
![]() Join Date: May 2010
Location: Wisconsin & Arizona
Posts: 4,844
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Re: A/c lines and hoses on a 67
They were on my '69, but I replaced them with the crimped type when I restored the truck since that's all that I saw available. They had worked fine with no leaks for 40 years.
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#4 |
Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,482
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Re: A/c lines and hoses on a 67
That's awesome. I had my ac stuff restored about 5 years ago by faBenny. For some reason I thought I'd get crimped ends like the newer stuff but I got it back just as it was with new clamps. If it works I may just put it back this way.
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#5 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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They didn't start crimping until the 70's not sure what year though. My 71 has crimps but I had all the lines made myself.
My 64 SS Impala had factory AC and all the lines where clamped with the special clamps and it worked fine. When I re did the lines I crimped all of them but 2. They still have the old screw type clamps on them. ![]()
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#6 |
Carpe manana
![]() ![]() Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,372
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Re: A/c lines and hoses on a 67
Note how the OEM AC compressor harness plug above is located at 11:00 - all the over-the-counter rebuilt compressors I've looked through have it located at 1:00
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1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 ![]() Last edited by DeadheadNM; 07-10-2019 at 01:44 PM. |
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#7 | |
Senior Member
![]() Join Date: May 2010
Location: Wisconsin & Arizona
Posts: 4,844
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Re: A/c lines and hoses on a 67
Quote:
One thing I don't ever recall seeing any discussion on is the fact these trucks used 2 different types of mounting brackets. Not sure when the change was made, but my early '69 used what I refer to as the earlier style that bridged the right side valve cover. Last edited by FirstOwner69; 07-10-2019 at 11:46 AM. |
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#8 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,148
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Re: A/c lines and hoses on a 67
I would use crimped hoses. You will have less leaks over time.
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'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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#9 | |
Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,482
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Re: A/c lines and hoses on a 67
Quote:
I would think that if you did periodic checks on the tightness of the clamps that it would lessen the chance of leaks. |
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