Hello, Fritz found date correct tanks for my GS. I am having the radiator rebuilt and I want to make sure that the shop I have doing it has the correct specs for the core. My car is a 1970 Stage 1 manual transmission non a/c car. Thanks, Marc.
They were three core. See if your guy can get Maine cores. They are or at least were the best. Biggest thing is finding a guy that knows what he is doing. Radiator re-coring is a lost art.
I think that I have the right guy. He is an old timer. I will check on that brand. What he is asking for are the dimensions.
It depends on how "the industry" measures the cores....ie - from EXACTLY what spots on the cores they take measurements. I just measured an original, still assembled, '70 Olds Abody 4 row core......the core is 17-1/8" tall(that doesn't include the height of the bottom and top "cross rails"...that would add more) and anywhere from 28-1/2 to 29 inches wide depending on how it's measured. As far as core thickness......you may have options depending on if you opt for a "high efficiency" core (ie wider tubes, etc). Anyway, the core thickness on mine won't be of any help since they are thicker 4 row cores. Obvious caveat is this is for a '70 Olds (442, etc) so maybe the cores weren't EXACTLY the same height and length but I believe there was some "standardization" of the cores among the various GM brands back then....but not 100% sure.
I think just one of the tanks was bigger. You have to know the two letter codes on them. Be careful if you go to thick as it may cause issues with fan shroud mounting. I bet Patton’s Olds height and width were the same. I have an original two core at home but height and width are the same. I can get those for you. Most important thing is core support rubbers have to fit. I would give your guy the radiator cover so he can make sure it fits. That would ensure correct width.
Also if you read Assembly manual says Heavy duty cooling not available on Stage 1. It’s all damn confusing.
"Also if you read Assembly manual says Heavy duty cooling not available on Stage 1. It’s all damn confusing." That's because the Stage 1 Option was supposed to include the "Heavy duty cooling package in it. With the AC pulleys, and the bigger radiator, but we all know there were some Stage 1 Non-AC 4-speed cars that came with the smaller "SJ" radiators. (Tank codes CF & IA.) If you want to know the specs of your radiator then you need to let us know which radiator you have. Duane
My car is a manual transmission, non AC Stage 1 with heavy duty cooling. I have CF and IA tanks. I don’t have a tag , I am not sure of the code. The build date is third week in October 1969.
SJ --repro sold here: https://www.thepartsplaceinc.com/part/1970/skylark-gs-regal-gn/cooling-systems/radiator-tags
That’s the Confusion Duane, the Stage coming with the smaller radiator when it should be larger heavy duty cooling SW radiator, I bet that chart confused assembly line workers too!
You're supposed to read the chart from the top down, and the first rad that fits the build is supposed to be the one you use. There are also different versions of that chart, as it was changed to different revisions when the assembly manuals and Wholesale Car Order Forms changed. You can only take that chart so far, as it also depended on the parts that were in the plant at the time..................plus just because a Build Sheet shows a specific part for the car, it does not necessarily mean that was the way it was built. We talk about this chart all the time, and it's actually getting to the point of stupidity. What did Einstein say, "The definition of insanity is........................ Duane