Originally Posted By: 64fourdoor
So in theory removing the boss and adding a short bolt in place that sits flush with the head surface would be ideal next to installing the lump? Just want clarification.

Well, theres not much theory to it, its documented and proven to be fact. But yes, just removing the bosses will net you the single biggest increase with a 30 HP minimum gain from what we saw with all the dyno testing done.



Class III CNC Machinist/Programmer