I'm not real sure what you are asking, but I'll take a stab at it. The hold down clamp on the distributor would be up off the block if the tang is not in the oil pump gear. I assume you are putting the distributor in with #1 cylinder a top of compression stroke and distributor turned for #1 to fire. To bring oil pump gear in alingment you can use a long flat blade screw driver to turn it to bring everything into alingment. smile