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Welcome to the forum.

You are missing compression - need at least 120 psi with the throttle held wide open - if the cam timing was off and you cranked the engine over without first turning the engine by hand to check for interference, it's likely the valves contacted each other or the piston and are bent.

I does not make a great deal of difference on the cam installed, as long as it is correct for the application.

Did you adjust the valves because they were too loose or too tight?
 
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