I have a stock 454 tall deck block and have 536 ci.
.100 over and 4.5 stroke. That engine ran a 5.05 at 136mph last weekend with 5400ft adjusted altitude. If you want to go .125 over you'll have a 540ci.
I am building a 540 myself. .125 with the 4.5 stroke. There are some kits out there for just this build. I lucked into a block for a $100 that had just got the machine work done thats required. So I had it tested to make sure it was ok( for a hundred I was a little skeered!). It turned out great.