If youa re talking about the LA .46, then there is LOTs of info on here, do a search and you will have hours of reading ahead of you
Pat, and I and several others around here are running them quite successfully.
our combination, GMA Powermaster 10% nitro, 22% oil, ( 50% 50%)
a .275 venturi, Supertiger needle assembly, APC 12.25 x 3.75 prop unmodified
Launch is around 9800rpm.
Its a powerhouse and after proper break in, it will work very well with this setup