Your taking a big chance by just installing the cam and timing chain on so called 0 advance without degreeing your cam. I just installed a brand new Reher Morrison cam that was ground on a 110 center line to be set up on a 2 degree advance 108 center line. When we degree the cam I set the timing chain up on 0 advance, but there the cam was at 103 center line. I had to put a 5 degree retard button to get the timing at 108. If I just installed the timing chain at 0, I would have had 5 degrees to much advance. Which might have gotten me in a bind with valve clearance not counting the fact it wouldn't have ran for sh#t. Always degree your cam when installing a new cam or timing chain. IMO