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Discussion Starter #1
On a mostly street driven 302 that won't see over 6,300 rpm?
 

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Cross drilled mains are mainly used on motors producing loads of hp. I think your 2-4 bolt mains should be fine.
 

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Discussion Starter #3
I mean crossdrilling the oil passages in the crank so that the rods have full oil pressure at all times with only a 1/2 groove main bearing. Is that what you are talking about? I am not talking about the main caps. Thanks for the help, Brandon.
 

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Oh, i was talking about cross drilled mains like mopar hemi's have. Im not sure about the crank, sorry.
 

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I wouldnt do it.....it weakens the crank.


Heck, I dont know of anyone crossdrilling Cleveland cranks, even with their "inferior oiling"
 

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67 coupe, 69 Sportsroof, 86 hatchback
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Mr. Smokey "Thrash-the-Nascar-Engine-to-Death-on-the-Dyno-a-couple-of-hundred-times" Yunick thought crossdrilling the crank to be pretty much a waste of time. I've yet to hear of anyone proving otherwise. I wouldn't worry about it.
 

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Discussion Starter #8
Thanks guys. That is a relief to me. One less expense. ::
 

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Fully grooved main bearings do the same thing as a cross-drilled crank, allow the rod bearings to be oiled 360 degrees rotation.
 
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