Concours radiator hoses
 

Im doing these hoses finally, but still need a picture of an original production line 70 upper hose. Anyone?

I've got one. Will get some pics of it tonight.

Here you go. This came off a low-mile, '70 Ram Air III. The ink stamp is white.

I also have the original lower hose off the same car. That one has a yellow ink stamp.

The original tower clamps are dated 2nd quarter of '70, just as an aside...

Let me know if you'd like any more specific pics. Thanks for making these available by the way.

Awesome, but could you pull the clamp off so I can see the whole thing? Also is there a stripe? Need a close up of that.
Thanks

do you have any sample photos of your work to share showing the 71 & up hoses????

sure, here is one without the clamp on. Looks like "NS" after the part number and "AU" on the second line, followed by an arrow, with "RADIATOR" on the 3rd line...

I don't see any evidence on THIS hose of a stripe, but I know a lot of them did have one/two stripes running down the length of them. It does have a "serrated" groove though (second pic).

Are you questioning my work? LOL

Thank you for the pictures, I have what I need. It just filled in the blank for what I have.

Also interested in correct '71 hoses.
Have a 25+ year old NOS upper, and original 4,000 mile hoses off a '72, if need comparison pics. thanks.

your welcome

i know this has been tossed about before and please feel free to correct me if i'm wrong, but its my understanding that the original part number for at least an 71 upper is 483115 code NS.

i *think* that the 1776 came into play a few years later on down the road and has been a correct Service Replacement to the 3115 as it ultimately superseded that original 71 number???

the lowers appear to be the same 480200/480201 but the uppers i'm not too sure. see enclosed photos....

What book is that you posted? I cant find that # anywhere. Will look into it.

It's from the 1971 Firebird assembly manual......

According to Pete McCarthy, we can draw a pretty close year correlation by the first 3 digits asssigned to a 6 digit part or casting number. So this is what he shows:
1970, 478xxx, 479xxx, 480xxx.
1971, 481xxx, 482xxx, 483xxx, 484xxx.
1972, 485xxx, 486xxx, 487xxx.
1973, 488xxx, 489xxx, 490xxx, 491xxx, 492xxx, 493xxx, 494xxx.
As someone mentioned, if there was no need to change a part or number assignment, an early (smaller) number could be used for later year(s) production.

bossbirdta, what car is that on? And what month and plant?

...its an April built 71 Van Nuys Trans Am...

Well, I had Gods helper look up the # and it doesn't exsist in any parts book or part # history book or my GTO assembly manual or the PY part # look up, but i see what you sent me looks legit. Soooo, I don't know what to tell you except the one im doing is in all the parts books and part# history book as a 71 all # and have had and documented more than a few survivors and original cars so yours must be a minority, not to say it never existed though.

70 ps hose
 

Are you going to do 70 ps hose, with red line?

I am. Have stamp and hoses.

I think the PS hose with red line is 71-72 as well..I know my 71 has it.