Do the Ultra BMF cams require any head work? No, most motors do not require any head work. As long as you have the correct spring rates to support the large lift of the cams, you should be fine.
![Group A Brands little.png]](https://knowledge.skunk2.com/hs-fs/hubfs/Group%20A%20Brands%20little.png?height=40&name=Group%20A%20Brands%20little.png){kind=small}