70 Vacuum Hose Clips

[Allen N.]

The AIM UPC 12 Sheet A14 shows 3 vacuum hose clips between the radiator core support and the vacuum tank. My car is missing the one closest to the vacuum tank. I have a fairly early 70 car SN 2664.

Looking at the area where the third clip would be located, there is no indication there ever was a third clip. Should my car have the third clip? If so, can you please describe the location?

Thanks,
Allen

[Dennis D.]

Re: 70 Vacuum Hose Clips

I believe that diagram is incorrect. 70 didnt have the vacuum tubes along the firewall. Aslo the hose/harness routing is more looping on the 70's I have seen. Also other than the most rearward clip, they aren't the locking variety.
I believe Rich Fortier has an nos clip your looking for. The part number for the clips are in the aim. Check the hose routing section. Or wait for Joe Lucia to chime in.

this post may help.....

https://www.forums.ncrs.org/showthread.php?123821-70-hose-harness-routing

[Ron G.]

[Mark E.]

Re: 70 Vacuum Hose Clips

Hi Allen,

I hope you're doing well. My '70 (#12,931) has three clips, similar to the photo in Dennis' link. The front two clips are riveted to the inner fender, while the clip closest to the vacuum tank is riveted to the fender's drip rail (see photo). If the fender is original, look for a hole or fiberglass repair in that location.

This photo is of a non-PB car; the clip would be near the booster if it had that option. Let me know if you want measurements for the location.

IMG_20200912_163933376.jpg

[E S.]

Re: 70 Vacuum Hose Clips

Hi- I have a fairly late 69 (307xx), and it has 3 clips.
The first and second clips aft of the core support are riveted to the inner fender skirt,and the third clip is fastened to the fender lip right above the vacuum can. (strange looking fastener)
Probably no help on your 70, but if there was a running change, this may help determine approx. whenIMG_20200912_163620806.jpg

[Mark E.]

Re: 70 Vacuum Hose Clips

This is similar to my '70.

In case you're looking, you left your keys and gas cap on the fender of your midyear.

[Ron G.]

Re: 70 Vacuum Hose Clips

Mark, with all the BS going on in the world that is funny. LOL.

[E S.]

Re: 70 Vacuum Hose Clips

Sorry about that- I have a hexx of a time posting pictures-don't know how that one got in there!
E.J.

[E S.]

Re: 70 Vacuum Hose Clips

Hi- I agree with you-Solid lifters DO matter!-Since 1967,as far am I am concerned.

[Allen N.]

Re: 70 Vacuum Hose Clips

Thank you very much for all of the responses.

The clip I am referring to would be just forward of the horn relay, and there is not one in Dennis' picture. Therefore, I am going to assume the AIM is incorrect.

Thanks again for the help.
Allen

[Dennis D.]

Re: 70 Vacuum Hose Clips

Thank you very much for all of the responses.

The clip I am referring to would be just forward of the horn relay, and there is not one in Dennis' picture. Therefore, I am going to assume the AIM is incorrect.

Thanks again for the help.
Allen

I would refer to the 69 AIM. That appears to be the routing for 70 also.
Although the 70 AIM shows a design change march or april, I've never seen that configuration in any 70.
Maybe someone could chime in as to how long it takes from design change to actually appearing on the car.
My July 70 LT1 doesnt have the change.

Another interesting thread...

https://www.forums.ncrs.org/showthread.php?123172-70-Hole-in-fender-rail

[Terry M.]

Re: 70 Vacuum Hose Clips

I would refer to the 69 AIM. That appears to be the routing for 70 also.
Although the 70 AIM shows a design change march or april, I've never seen that configuration in any 70.
Maybe someone could chime in as to how long it takes from design change to actually appearing on the car.
My July 70 LT1 doesnt have the change.

Sorry to say there is no fixed answer to your question. Some items, especially ones related to safety, happen right away; sometimes even before the AIM drawing is changed. Others take quite a while.

The cotter pin to hold the rear toe shims shows up in the 1969 AIM. It doesn't show up on the cars until the last week of 1970 production (late July 1970). You may have found another feature in the clips to support the vacuum harness.

[Terry M.]

Re: 70 Vacuum Hose Clips

I believe that diagram is incorrect. 70 didnt have the vacuum tubes along the firewall. Aslo the hose/harness routing is more looping on the 70's I have seen. Also other than the most rearward clip, they aren't the locking variety.
I believe Rich Fortier has an nos clip your looking for. The part number for the clips are in the aim. Check the hose routing section. Or wait for Joe Lucia to chime in.

this post may help.....
https://www.forums.ncrs.org/showthre...arness-routing

Dennis: Sorry this has taken a year for me to research this.

Allen: This is the best I could do.

1968 AIM UPC 12 A5 (the same as 1970 UPC12 A14) shows two clips. 1969 UPC 12 A 15 (the same as 1970 UPC12 A14) shows three clips. 1969 UPC 12 Sheet A 8.5 (the headlight wiring harness) shows 3 clips. So no joy from any of those. I couldn't find an earlier version of 1970 UPC 12, Sheet A14 with revisions 1 through 3. The 1969 AIM didn't show revisions 1 to 3 either.

The 1971 AIM UPC 12, Sheet A14 starts with Revision 5, so based solely on this example, when the next model year started they didn't start the revisions back at 1, but just rolled on the the next revision number. There may be revisions for this page to the 1969 AIM that I/we do not have.

The thought occurred to me that the third clip may be dependent on Power Brakes (J50), but I could find no reference to the clip there. I thought perhaps the third clip was added on Power Brake cars to keep the wires and hoses clear of the booster. While I couldn't find anthing in the AIMs it would be something to consider if we are surveying cars in the field.

So at this point all I can add is we know more that we don't know.

[Dennis D.]

Re: 70 Vacuum Hose Clips

Dennis: Sorry this has taken a year for me to research this.

Allen: This is the best I could do.

1968 AIM UPC 12 A5 (the same as 1970 UPC12 A14) shows two clips. 1969 UPC 12 A 15 (the same as 1970 UPC12 A14) shows three clips. 1969 UPC 12 Sheet A 8.5 (the headlight wiring harness) shows 3 clips. So no joy from any of those. I couldn't find an earlier version of 1970 UPC 12, Sheet A14 with revisions 1 through 3. The 1969 AIM didn't show revisions 1 to 3 either.

The 1971 AIM UPC 12, Sheet A14 starts with Revision 5, so based solely on this example, when the next model year started they didn't start the revisions back at 1, but just rolled on the the next revision number. There may be revisions for this page to the 1969 AIM that I/we do not have.

The thought occurred to me that the third clip may be dependent on Power Brakes (J50), but I could find no reference to the clip there. I thought perhaps the third clip was added on Power Brake cars to keep the wires and hoses clear of the booster. While I couldn't find anthing in the AIMs it would be something to consider if we are surveying cars in the field.

So at this point all I can add is we know more that we don't know.

Terry...
Thanks for your effort. I just went through the hoses on my 70 LT-1 yesterday. Primarily to clean up along the header bar as the clip that supports the hose/harness was missing.

After installing a new clip I noticed in order to create the "loop" along the left fender, the hoses became too short to run properly. I know the hoses were replaced. I'm assuming the venders replacement hoses are of the redesign version. As we know the new routing runs the hoses straight along the fender, which would have them short to run in the loop configuration.

This pic is a original 70 clip hanging in my garage
20200920_080801.jpg

[Allen N.]

Re: 70 Vacuum Hose Clips

Dennis and Terry,

I would like to thank you very much for all of your research. The picture above with the vacuum lines looped down with no third clip look like the Figure M 25.5 on page 197 of the 6th Edition of the 70-72 Judging Guide. So I feel very good about looping my lines with no third clip.

Thanks again,
Allen