1/8 Drilled Main Jets- Anybody running this or bigger

[Brute Man Kelley]

I put my 42 pilots back in and 1/8 drilled main jets. It runs the best it has since the bbk & head porting. Anybody else running this big or bigger? Mine has not run as good as it did stock bore. Maybe I'm finally feeding it enough to make it happy. Any thoughts?

[Boloiii]

1/8", Holy sh** that is huge. What needles are you running? Stock? I wonder if using a thinner or shorter needle would get you back down on the jets. But, if it is running that well I would say run it. Just seems huge for a main.

I will be heading to a dyno in the next couple weeks with my 840cc, we'll see where I end up.

[Brute Man Kelley]

I'm running stock needles with 4 shims. I think the extreme head porting is why it's wanting more fuel & air.