May have screwed up installing new cam. Need help!

Did you by chance change your damper? If so, the timing mark will be way off. I used this one on my 273 rebuild, and timing mark was 90 degrees off.

[URL][URL]https://www.summitracing.com/parts/SUM-163273[/URL][/URL]
No I used the factory damper. I don't remember moving it after the install. Could it have been off from the start?