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

Alex5280 said

Wanted to say Thanks for posting the videos. I am doing most the the GJ oil mods now and seeing you drill bit "walk" and ruin the block is concerning. I had planned to drill the mains to the oil galley with a 9/32" bit....is there a way to keep it straight to avoid drilling offline??? Is it better to have a machine shop drill these??? Thanks Guys!

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As you can tell I'm a rookie but next attempt I will be using a 9/32 bit or smaller to start the hole straight.
Then I will step up a size.
Take it slow, double and triple check.
I also bought a few grinding stones to smooth the surface at the hole entrance so I can have an easier time starting the drill.
Just gonna de-bur it a little.

I flat out was in a hurry and went straight to the 5/16" bit which is taking out a lot of meat all at once.
My bad.