Quote Originally Posted by stovens View Post
34 -40 good to know. The timing pointer is from old engine, the timing chain cover is aftermarket from Dorman(sold through Summit) and the block is a rebuilt one from Spokane. So could be that this is an issue.
It's happened before. Also be sure to inspect the Harmonic Balancer. Sometimes the outer ring will move or has moved. Inspect the polymer material between the inner and outer rings for damage or signs of failure or just movement.

Hope it helps! Let us know how it works out.