Deck Height Variance

My brother and I have just dummied up a 383 with 440 forged crank bored 60(438 inch stroker) to check for deck height and squareness.New pistons and rods.
We measured top,bottom and ends on cylinders 1,2,7 and 8.
We were very surprised to find max variance of only 4 thou.
I guess ours is one of the better ones.
It's a 1965 HP block if that matters.