[60-66 Nut]

Brad, there were several different sizes of radiators they used in those trucks depending on the engine size and whether the truck had A/C, heavy duty cooling, manual or automatic, etc. The 454 usually got the biggest radiator with a 4-row core, but they also had some smaller ones with a 4-row core too. Most radiator shops can replace your core with a heavier one, but you may be able to buy one that way too. I've always preferred having the old one recored when possible, because usually they use better cores and put much more solder than the after-market radiators, but that's just me. Best of luck whatever you decide.

60-66 Nut