Re: 1969 big block rad
Barry, I believe in the 69 shop manual it says that 410 through 456 rear ends will get a four core radiator. The bent neck comes with big block air-conditioning or the heavy-duty cooling system. When I ordered my 69 with the L 78 and 410 gears I also ordered a heavy-duty cooling system and the car came with the bent neck radiator. I hope this helps you out.
Jim
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