Originally Posted by uctowgnr

I know this is an old post and before you crucify me, hear me out. I am the proud owner of a couple lucky 7's L7T5's along with a few other of this period. Does the same hold true to the engines in today's standard or have we had the something good from r&d and these engines are "dinosaurs" I am asking as I am curious if it is worth sending these engines off for "work"