Guide to Regrinding Camshafts

1. You increase lift by decreasing the base circle. So you are lift limited by what size the base circle and lobe are now and how much of the base circle you can remove. I do not know how small on base circle you can go.

2. Maybe. The lobes on the cam are cast at the foundry. A roller lobe usually has more area under the curve so you may not be able to get a roller lobe on a HFT or SFT core if the material isn’t there.

3. You can move the LSA about 1 degree each way. Maybe 2 if you are lucky. As I said, the lobes are cast at the foundry and you don’t always have enough material there to move the LSA much.

4. If you mean HFT to SFT lobes then yes.