What are the key components and specs to achieve 600 hp on 87 octane? Most of the 500 stroker builds I see posted in the 600+ how range all run 91-93 octane. If it's easy to get 600hp on 87 I would think more would be building towards this method. If a roller and a solid tappet cam have the same lift it would be easier to do with the roller because of the decreased duration for the roller compared to the solid allowing for an increase in cylinder oressure correct? I've been trying to read about cylinder pressure and dynamic compression but but it's not clicking in my brain on what is required to prevent detonation.