hello im new here and with out a search bar i refuse to waiste time looking for my answer and decided to ask.
it might be obvious but w.e .... IF you fully build a motor with the best all motor parts "at least block wise" and kept it within factory piston size and compression ratio and rod lenth and stroke length but got new lighter parts would it benifit a whole lot? aside from tuning n going dizzy-less n headers and blah blah ... i no its a very expensize route but "when i win the lotto i would do it"

????
also does a very light weight flywheel cause you to rev higher from a stop to go?