Hi Rob and welcome to the forum. Original LF radiators are getting really difficult to find and rarely come up for sale...but when they do, expect to pay upwards of $600-$800 for a unit that needs to be re-cored. If you happen to find an original for less, jump on it and consider yourself fortunate. You might want to post a WTB ad in the swap meet section as well. Good luck
Remember that these were only a 2 core radiator. I went and looked in the GM Parts bin in 1981. Should have bought 20 of them.
I'm with you there Mark....I think of all the parts I tossed from my first car (70 SS-350) and I still cringe....but who knew?
I can still hear the sound of my original 186 heads on my 69Z hitting the bottom of my fathers metal garbage can when I replaced them with the 292 angle plug heads with blocked heat risers. Boy, I wish I still had those in storage somewhere!
I know the 70Z radiator was a 2 core, but didn't the stick shift AC equipped cars get the same radiator (IA, CT tanks) but was 3 core? That wouldn't be a bad substitute if you come across one. Pretty tough to see the cores when its installed and the Z could actually use the extra cooling if you are going to drive it.
I drive mine a lot and went with a 4 core with bigger tubes made in the early 80’s at a race shop. I don’t even remember what I did with my orig rad.
Dave - I had my original IA/CT tanks re-cored as 3-core...can't tell once installed. I parted out a 70 Sport Coupe years ago (350 2bbl) and the original radiator was a 26" 2-core. I guess finding an original manual trans AC car radiator might have IA/CT tanks...but good luck finding one.
The radiator is not for sale, but if anyone can come up with an original 1970 big block radiator with an XY coded tank, I have access to an IA/CT radiator that can be offered as trade. I have a very nice 1970 2 piece shroud to go with the IA/CT radiator so it would go as a set. --