Re: 5.7 vortec in 72 c10 issues
Did you break in the cam properly and use plenty of assembly lube? Did you use a zinc additive during break in. If that cam is a flat tappet cam I really hope you didn't fire that engine up and let it idle while you attempted to adjust the valves. The first 20 minutes of a flat tappet cams life is the most important. If you didn't do proper break in I would suspect that you wiped the cam out.
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