64 Valiant 273ci noisy valve train

Hay Wally. Welcome aboard. Yes, solid lifters will make some noticeable high frequency ticking when adjusted correctly. Anything overly loud would probably need adjusting. In other words, if you can hear the rockers ticking above all the other engine noises, instead of kind of along with the other noises, they probably need adjusting. I always adjust them cold to spec, even though the spec is given hot, but who wants to get burned? You'll never notice the difference.