Commando 273 cam specs
I don't know if I'm "hiding behind a keyboard," and I'm certainly no cam expert, but I do think the MP instructions to multiply its advertised duration by .85 to get the duration at .050 is not very accurate for at least some of its cams. Using that formula gives me 231 duration at .050 for my MP 761 cam with advertised 270/272 duration and .450/.455 lift. I don't remember where I got this chart from, but the big block MP 272 degree cam has (according to this) 224 duration at .050.
I don't know if I'm "hiding behind a keyboard," and I'm certainly no cam expert, but I do think the MP instructions to multiply its advertised duration by .85 to get the duration at .050 is not very accurate for at least some of its cams. Using that formula gives me 231 duration at .050 for my MP 761 cam with advertised 270/272 duration and .450/.455 lift. I don't remember where I got this chart from, but the big block MP 272 degree cam has (according to this) 224 duration at .050.