Assembling my 454 short block, installed the timing chain and it just seems like it is too short. Supposed to be a high end true double roller, steel gears, torrington bearing, 9 keyway, etc. It went on, but it is super tight, no slack whatsoever between the cam and crank, to the point where if it got any tighter at all as it warmed up I think it would break something. Thoughts? If it were a set for a line bored block, (which it isn't supposed to be), would it even go on? TIA, Jim.