I'n reading KAAMA's thread on cam selection, I'd like your opinions on a decent cam upgrade for the 575SCI.
I never could understand why the Merc engineers chose a flat tappet cam for this motor over a nice roller set up.
Anyone here tried the 741 in a 575SCI? Or, the same profile as the 500EFI?
I do like the reliability of the stock GM roller lifters and dog bone retainers but I believe you are limited to a .600 lift with them.