We had a blown injected 522, but we put the induction on another motor and installed a tunnel ram with dual 750's for the time being. We also had the cam reground and installed a mechanical fuel pump. We are using the same solid roller lifters so I'm assuming there is no break in required for the cam.
However we did use assembly lube when we installed the cam and the fuel pump drive. Will we need to replace the oil right away?
In it's previous configuration we were running 20/50 royal purple. Should we stick with the same oil? Can we switch to a different synthetic, or possibly a blend? 14qt of royal purple is pretty pricey, but we have no problem buying it and changing it often if we need to.
Sorry for the dumb questions, but I want to make sure we don't shorten the engine life.