I guess what's happened here is that during a body-off restore/engine change 16 years ago by a previous owner the chain was put in the tank when it was removed and then it was manhandled around to loosen up any crap and crud, then drained (hopefully) but the chain was forgotten and left in. I didn't think it would give me any performance gains but thought it might be safety issue at the track or something like that.
Thanks Guys.
