Hi,
Sorry to hear about your trouble.
You have a mechanical cam, so it needs proper adjustment with feeler gauges, check the cam spec sheet for clearances, such as .022 intake and .024 exhaust , adjust when cold. If your clearances were too tight then when the engine warmed up, the clearances would get tighter ,cause spring bind and destroy your cam.
Also why are you running a mechanical cam, are you going to race it? The hydraulic grinds are just as powerful as the mechanical grinds and are more street friendly and don't need to be adjusted every time you take it to the track.
Perry.
