A/c lines and hoses on a 67 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**chewychevy67** · 07-09-2019, 12:17 AM

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?

Sweeet67 · 07-09-2019, 09:53 AM

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.

**FirstOwner69** · 07-09-2019, 10:50 AM

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.

**chewychevy67** · 07-09-2019, 11:06 AM

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.

Andy4639 · 07-10-2019, 09:57 AM

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.

**DeadheadNM** · 07-10-2019, 10:05 AM

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

**FirstOwner69** · 07-10-2019, 11:27 AM

Quote:

Originally Posted by DeadheadNM

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 is located at 1:00

I almost didn't buy my compressor because of this. However, the price was right ($50).

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.

MARKDTN · 07-10-2019, 01:49 PM

I would use crimped hoses. You will have less leaks over time.

**chewychevy67** · 07-10-2019, 02:01 PM

Quote:

Originally Posted by DeadheadNM

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

I just bought this one from Alma. It is a brand new unit and has the 10 o clock position. I just wish it didn't have metric threads.

I would think that if you did periodic checks on the tightness of the clamps that it would lessen the chance of leaks.

07-09-2019, 12:17 AM	#1
chewychevy67 Senior Member Join Date: Jan 2010 Location: Here Posts: 5,551	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? Attached Images

07-09-2019, 09:53 AM	#2
Sweeet67 Registered User Join Date: Aug 2016 Location: Idaho Falls, ID Posts: 233	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.

07-09-2019, 10:50 AM	#3
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,852	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.

07-09-2019, 11:06 AM	#4
chewychevy67 Senior Member Join Date: Jan 2010 Location: Here Posts: 5,551	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.

07-10-2019, 09:57 AM	#5
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: A/c lines and hoses on a 67 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. Attached Images __________________ 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.

07-10-2019, 10:05 AM	#6
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,443	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 __________________ 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 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland Last edited by DeadheadNM; 07-10-2019 at 01:44 PM.

07-10-2019, 01:49 PM	#8
MARKDTN Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 2,165	Re: A/c lines and hoses on a 67 I would use crimped hoses. You will have less leaks over time. __________________ '83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.