not sure if this is related to the topic... but back in the early to mid 90's i used a comp magnum 280 cam in a 455 with shaved 6x-4 heads & used the crane version of the rhoads lifters. the cranes are no longer offered today from what i have seen, but were advertised as the same benefits of the rhoads lifters but without the noise. not sure who made them but they were a bleed down design but with a slower bleed down & supposed to not be as noisy. i never noticed any ticking on that engine with a very quiet exhaust.
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