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I tend to agree with some; that the opposite centrifugal force keeps oil from getting to the rods.



OK so lets say that this is true. Then wouldn't the oil act like a dam and force oil to the rods correct. This is under 60 psi.
As previously mentioned the only differences between the two are that the crank is that the 5.7 is drilled straight through on the mains.
Not trying to be an A$$ just trying to understand.
Matt



I see what you are thinking and agree that not much would flow out of the thru-drilled main when the hole is not opened to the rod, but it's the weight of the oil on both sides of the CL of the crank(in the main) that pull the oil in 2 directions at once, cancelling out each other. Then when the oil holes align to the rod, there is very limited time for the oil to overcome that force and escape to the rod.

After reading what I have on these engines, I would find an aftermarket crank if I was going to spin it over 6K.

Hope this explains my way of thinking.

Yeah, it's got a smallblock.