I know at least one of us here is running an aluminum flywheel and didn't see much of a difference in performance. I've been told by someone else that "it wound up like a V8" after the installation and they were very impressed (all stock except for Tremec OD trans).
I'd like a few more opinions on whether or not it's worth putting in? Would it help mileage as well?
Btw, this is in my '67 Chevy 1/2T 250 with a T-5.
