made a couple other posts, so far seem to have ruled out the knock sensor, up to this point I just put my motor in, new head gasket, redone head, valve job etc. Right now it will turn over then sounds like it misses then dies. The car is definitely getting fuel, it has spark, and I rechecked the timing marks and all that is fine. both marks at the top when the crack pulley is at zero. Checked to make sure everything was plugged in, the cam position sensor is in the same position as when I took it out, trying to think what else. appreciate the help hopefully somebody can help fix this.