The only problem is the MP hyd cams with 108 lsa are over 290 degrees(I know they don't list them as such),so you can advance them all you want and not produce cylinder pressure with under 8 to 1 comp. The old standard comp 268high energy is ground on a 110lsa and most install it around 106lca,much closer to usable than the larger duration MP cams,IMO.