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Early 69 Big Block A/C Question

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Old Jan 13, 2005 | 05:48 AM
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Default Early 69 Big Block A/C Question

I have an early 69 427 with A/C, car was built Oct 15, 1968. My question is would 68 A/C components have filtered over into the early 69's? Does anyone have or know about early 69's having clamped hoses instead of crimped lines? Thanks for any input...........B
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Old Jan 13, 2005 | 08:40 AM
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Originally Posted by 69envy
I have an early 69 427 with A/C, car was built Oct 15, 1968. My question is would 68 A/C components have filtered over into the early 69's? Does anyone have or know about early 69's having clamped hoses instead of crimped lines? Thanks for any input...........B
I don't believe GM ever used clamped refrigerant lines.....

Someone correct me if I'm wrong.

Steve
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Old Jan 13, 2005 | 09:09 AM
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My '69 L36 has an October 10, 1968 build date and crimped hoses.

JB
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Old Jan 13, 2005 | 10:57 AM
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Yes they did, up to 68 in Vettes. It requires a special hose clamp with a retainer to hold the hose from blowing off. My crimped line got a hole in it and it was repaired with a tube and those clamps.
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Old Jan 13, 2005 | 11:47 AM
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Default A/C lines...

Factory on all late '60's GM cars was crimped lines. If they needed service, clamps were used to attach the new lines unless the entire manifold assembly was replaced.

If you want the original look, there are certainly places that can re-produce those crimped connections. When I resurrected my A/C system, all the engine side stuff was missing, so I bought a used line assembly and had the lines replaced with barrier hose and then re-crimped them onto the compressor fitting. As far as I know, about the only difference between early and late systems was the label on the compressor and possibly the dryer shape. The labels are available from Jim Osborn reproductions.

http://www.osborn-reproduction.com/

Hans
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Old Jan 13, 2005 | 11:53 AM
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Wrencher, I think you are wrong on that. I have an NOS muffler and block assembly for a 68 BB with no crimped lines. Look at this part list from Dr Rebuild http://docrebuild.com/dr-r-web/AC-HOSE.HTML
and look at the 68 assembly manual. Crimping evolved around 69 in Vettes.
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