360 block deck heigth

does anyone know if all 360 blocks use the same deck heigth or if some years used different ones? I have a 71 360 block that I transfered the crank/rods and pistons from into a 74 block and I now have my pistons sitting at a different heith than they did in the 71 block.The pistons in the 71 block was down in the wholes .015 but now moving them to a replacement 74 block they sit .085 down in the holes????? anyone seen this before