Break in cam with new Schumacher ceramic headers?

Header manifacturers know that "most" guys will start a new engine lean and with the timing too far retarded and they're right. Most guys are hard headed and will not listen to anyone's advice, or they are just flat out stupid.

Not talking about the OP here.

All that said, if you just "gotta" break it in with those headers, make DAMN SURE AS SOON AS IT FIRES to pull in about 36 degrees of timing at about 3000 RPM. Vary the RPM from there between 2000 and 4000 for 20 minutes "or so". Do NOT try to lean the carburetor out. Let it run fat, if it does. None of this is any guarantee you won't damage the headers......but if you follow this advice and the similar advice of others before me, you reduce your chances. If it was ME, I would use a known GOOD carburetor and one that was "a little too big" for the engine. JMO.