Calling all '66 427 with Air Conditioning Owners

[Mike B.]

Re: Calling all '66 427 with Air Conditioning Owners

OK Guys,

Here's another question. It's about the freon hose clips (clamps) on the right side fender skirt. I'd really like to hear from all '66 AC owners on this one. '65 and '67 folks too! The small block AC cars have two clamps, the big blocks have only one. But they should all be the same parts. Please chime in if you're relatively sure that your part/bolts/nuts are original. I'm curious as to any stampings/logos on the clip (clamp).

In the '66 AIM, C60 section, Sheet D6 there's a description of the freon hose clips (part #1), screws (part #5), and nuts (part #6). What do your originals look like? What head marks do your original screws have? The more detail, the better. The nut will be difficult to get to unless I'm lucky enough that you have your wheel removed. Describe the clip (clamp) and any marks/logos you see. This means a lot to me. I'll document it all. Photos would be great! Mike

[Mike B.]

Re: Calling all '66 427 with Air Conditioning Owners

Oh, by the way, most of these shots I post are file shots and not of my car's original equipment. If it's original to my car I always mention it.

As stated earlier, I never want to alienate any readers of this post. I've omitted asking specifics from the '63 and 64 guys since I'm trying to narrow down what actually went on my car. Bad on me! I'd really like to hear from ANY Midyear owner with AC. I'm sure you have valuable information to share on this thread! The head marks I seek may well be on all 5 years of air conditioning.

One last thing. I know how to post photos on the TDB. I get it juuuusssst right, then I click "save" and voila, photos end up in different places vs. what I'd originally planned. But it works well enough, so bear with me.

Thanks Guys,
Mike

[Mike B.]

Re: Calling all '66 427 with Air Conditioning Owners

Thanks Dom,

Great to hear from you. Good info about the condenser. I was able to get my original back from a prior owner of my car. He only had one Corvette in his life, so I know it's my original. I'm very grateful to him. I bought boxes of original AC parts from him that came off of my car. That was in 1989.

There's a slight bow to my condenser. Especially on the end brackets. I'm thinking that after the front end accident from long ago, the mechanics at the body shop replaced the radiator support and radiator then reinstalled the condenser over top the non-AC support with the x-brace.

It's all falling into place,
Mike

[Domenic T.]

Re: Calling all '66 427 with Air Conditioning Owners

Thanks Dom,

Great to hear from you. Good info about the condenser. I was able to get my original back from a prior owner of my car. He only had one Corvette in his life, so I know it's my original. I'm very grateful to him. I bought boxes of original AC parts from him that came off of my car. That was in 1989.

There's a slight bow to my condenser. Especially on the end brackets. I'm thinking that after the front end accident from long ago, the mechanics at the body shop replaced the radiator support and radiator then reinstalled the condenser over top the non-AC support with the x-brace.

It's all falling into place,
Mike

Mike,
My car needed the radiator support so I checked one out of the parts department for the 435 HP 67 ca, not knowing about the X. When I did the conversion to factory air in 71 it all fit!
Now, if you look at a vendors picture of both radiator supports they have them inverted so you can't see that the only difference is the X.

Dom

[Mike B.]

Re: Calling all '66 427 with Air Conditioning Owners

Dom,

Yes, I've figured the only difference between AC and non-AC supports were the welded X-bars. I was contemplating removing the bars and using the one I've got but then found out through research from my NCRS buddies that I need a support with one tube/grommet hole, not two like this one has. Although I don't know if I'd have had the heart to do that.

So down the road I'll part with this original '60s - '70s non-AC 427 support. Zero rust.

Cheers, Mike

[Mike B.]

Re: Calling all '66 427 with Air Conditioning Owners

Good Evening Guys,

Well my last info request about the right skirt freon hose clips/screws went over like a lead balloon. It was post #16 to this thread. Okay, maybe we'll save that one for later. Let's try this next one that's even easier to see on your cars.

This one's for '66-'67 ('68-'69?) 427 w/AC owners:

Could anyone please report the (3) bolt head marks for the U-shaped bracket that bolts onto the intake manifold? 2 bolts mount it to the intake and the side bolt connects the brace bar to this bracket. Sure would appreciate any help with this identification. I'm sure there's running differences between cars. I'm compiling data on small block and especially big block AC bolt IDs. Thanks Everyone, Mike

[Peter M.]

Re: Calling all '66 427 with Air Conditioning Owners

Mike,
My 1967 clamp has no marks. I believe it to be original but can't say for sure.
The AC bracket bolts may not be original, the engine has been apart before. (CE block)
Kind regards,
Pete

[Mike B.]

Re: Calling all '66 427 with Air Conditioning Owners

Great Pete,

What does the side bolt on the U-shaped bracket look like? The one that attaches the brace bar to the bracket.

Thanks, Mike

[Leif A.]

Re: Calling all '66 427 with Air Conditioning Owners

[QUOTE=Mike Browning (24893);826277]OK Guys,

Here's another question. It's about the freon hose clips (clamps) on the right side fender skirt. I'd really like to hear from all '66 AC owners on this one. '65 and '67 folks too! The small block AC cars have two clamps, the big blocks have only one. But they should all be the same parts. Please chime in if you're relatively sure that your part/bolts/nuts are original. I'm curious as to any stampings/logos on the clip (clamp).

Mike,
The small block A/C cars have only one clamp, as well.

[Mike B.]

Re: Calling all '66 427 with Air Conditioning Owners

Hi Leif,

I confess that my AC knowledge leans more towards the big block AC cars. But I based that statement from the '66 AIM, C60, sheet D6. That page shows 2 separate clamps for the small block AC freon hoses. Then on C60, sheet D3.5 it shows the one clamp for the 427 AC hoses.

OK, I think I just figured it out. The reason two clamps are shown on sheet D6 is the draftsman was showing the forward clamp is for the 427 (view E) and the rear clamp was for the small block (view A).

Thanks Leif for the clarification,
Mike

[Peter M.]

Re: Calling all '66 427 with Air Conditioning Owners

Mike,
The side bolt is not original (Lawson), that's why I didn't bother with a picture.
Pete

[Vernon S.]

Re: Calling all '66 427 with Air Conditioning Owners

Hi Mike, I enclosed a couple of pictures. The one of the bracket attaching to the intake is clear. The one of the bolt on the adjustment rod is not clear but the markings are UR, with the right upright of the U also serves as the upright for the R. It also has the three hash marks like the TR bolts. Hope this helps.

Skip

[Mike B.]

Re: Calling all '66 427 with Air Conditioning Owners

Thanks Pete for your reply,

We'll keep this thing goin' one way or another!

Pretty sure it was you that posted great shots of your original compressor brace bar a year or so ago. If it was, thanks again!

Mike

[Mike B.]

Re: Calling all '66 427 with Air Conditioning Owners

Hi Skip,

It's great to collect shots of these big block bracket bolts. TR grade 5's (3 radial lines) on the intake are quite common there. Your UR grade 5 bolt is definitely acceptable. Nice rare bolt that's seen all through the Midyear cars. Especially the first half.

I'm really into original bolts. I've amassed quite a collection through the years. Befriended some great guys in the hobby with similar enthusiasm! Deciding which head marks to choose for my AC compressor brackets. I'm gonna post another couple of shots now for head mark info research.

Thanks for helping this thread along Skip,
Mike

[Mike B.]

Re: Calling all '66 427 with Air Conditioning Owners

Good Evening Everyone,

This one's for you '66-'67 427 w/AC guys. Can anyone tell me what original head mark is on the bolt that attaches your compressor brace rod's outer end to your compressor's upper inner ear? This bolt is part reference #19 and the brace rod is part reference #18 on the '66 AIM, C60 section, sheet C3.

This bolt routes through a lock washer, then the compressor brace bar, then the heater hose clip, then through a thick washer, then finally screws into the compressor ear. The clip and thick washer may be reversed in order.

This special heater hose clip is part reference #33 on the '66 AIM, C60 section, sheet D3.5.

Here's a couple of shots of an original brace rod and original heater hose clip. They are quite difficult to find but not impossible.
Have a great evening! Mike