My take on the oiling system crossover tube for the small block

CNC-Dude said

How do the block mods here differ from the popular Mopar Performance copper tube modification back in the 80's and 90's?

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They don't. It's the same thing. The discussion is does a crossover work. The answer is no it doesn't but guys want to defend some crap published in books. It's not like a book has ever been wrong.