"...These ARE made specifically for a Pontiac engine, even though the oil passage for the lifter body oil hole location needs to be ground into the block?..."
It's been posted that most all "Pontiac" Roller lifters are Chevy lifters, with Pontiac link bars. The exception is the CC lifters which are made by Shaver. If anybody else makes a roller lifter with the Pontiac oil band location, I've never seen it mentioned.
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