rocker arm oiling problems on Y block

[Crankster]

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Originally Posted by Gene F

How effective is frequent oil changes in lieu of this?

Better multi-viscosity detergent motor oils and preventive maintenance seems to go a long way. The lubrication system feed with a single bearing wasn't the best design, and in those days people were using these cars and trucks as daily drivers. Frequent short trips will "load up" with sludge and condensation. Once there is a restriction or pressure drop it's all over, the damage to typical Y-Block rocker arm bores/rocker shafts has to be seen to be believed. Engines are tough and will put up with all kinds of different abuse, but "no oil" is not one of them.