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I know 70 used double wire clamps for radiator hoses but I dont remember what the heater connections were? By 71 everything was tower clamps. Do you have an assembly manual you can check? That is your best resource.
They were flat 3 tab spring clamps. 2 black and 2 Olive green. That's what is on my car, they have been on there for like 20 years. No leaks at all. I used to sell a lot of them, but stopped when they dried up. The clamps that like Inline sells and tells you are the exact right clamps, made from the exact right material, in the exact right colors...yada, yada...aren't right.
I checked in the Good Book. I don't have a book for '69, but imagine '68 and '69 would be the same for this small detail. In '68, spring clamps were used. The drawing from the Product Information Manual (AKA "Assembly Manual") depicts one version of clamp. On the other hand, the picture is found in the Chassis Service Manual, and it shows a different style of clamp. But they are both clamps. Maybe someone else will post pics from the '69 PIM and CSM.
Edit: The other guys beat me to the punch! See what happens when I take too long to find the info I'm looking for!
Last edited by BackInTheGame; Apr 7, 2021 at 01:07 PM.
I don't really need to look at a PIM for this. What I know, is that when you look at a CSM, you are mostly looking at pictures from the previous year. A 1968 CSM is showing you pics of a 1967. My 1969 442 had the original ribbed heater hoses on it, the 2 firewall clamps were flat. The water pump clamps were worm jobs. The Corbin type you show Rich, that's probably a 67 picture. As far as I know, both 68 + 69 used the flat clamps on the heater hoses. I just dug a set out for a pic. Most likely they had square tangs, but otherwise they were identical to these.
For what it's worth, I believe there were some differences depending on assembly plant - and probably by supply as these would have been a commodity part with a few different vendors. My '69 442 also had the original heater hoses (and plug wires) on it when I purchased it in the early '80's. It had the round wire style clamps as shown in the actual grainy photograph posted by BackInTheGame. I've replaced the hoses but retained the original clamps. By the way, I have a '69 Cutlass S, also very original, which also has the round wire style clamps on the heater hoses.
The flat style clamps (green, red, black, etc.) were only used on the fuel lines - at least on my cars.
That's interesting. My car is a Lansing A/C car, where were those 2 cars built? I know the corporate plants used different hardware for a lot of things. The sheets Norm posted are Lansing from Dec 1967 + June 1968 both showing the flat clamps It's always interesting to learn new things.
The 442 was built in NJ (Linden plant if I remember correctly). The Cutlass S was built in Fremont, CA. One other interesting note about the Fremont car, the spatter paint in the trunk (original) doesn't look like the typical A-body spatter paint. I've heard it described on this site as being 'spider-web like'. That's as good a description as any. More stringy rather than specks.
I should also clarify my earlier comment about the clamps. On both cars, the round wire clamps were only at the firewall connections. The water pump connections were the flat black style you showed.
Thanks all for the comments. What i found on my car (69 AC) at firewall were green flat style clamps similar to pics in mrolds69s post above. Im now confident theyre original and will reuse em
