My first 273 build was a solid 284 duration .450 lift cam. The Direct Connection Manual used to say the biggest cam for a street car was the Street Hemi Grind, about 284 duration and .480 lift. They later updated it, same lift but 280 duration and faster rates. Supposedly better lower end and vacuum with no loss at the top. Your cam is a big cam. I use solid cams in my own cars, typically a Racer Brown or Isky cam. Proven designs and they hold up well. I'm building a 72 340 and I'm going to use a Racer Brown ST2, 218 duration at .050" with .450 lift. If I was going hydraulic I'd just use the 340 cam. Why not start your own thread giving as much information you can and see where it goes?
