SOOOOOOOOOOOOOO close
seems like rad. are the weak link, but can you expect a 40-50 yr old radiator to be problem free!!???? you see so many cooling issues on this site, even with new aluminum radiators, all thier electric fans etc!!!!!!
lets face it, the cooling system is just that, a system....... rad., fan, water pump, cooling of the engine components, the heater core. the shroud, the rubber under hood to direct air to rad........blook bored out?? compression..