I just purchased a 2006 ss sc that has 60 lb injectors and a 2.7 pulley on it . It has the the stage three kit . And runs coolant temps between 180-200 . It has a 2.5 inch magna flow cat back and zzp down pipe . It runs about 18 psi of boost . It runs great . But I don't know if it has new cams in it. I have contacted a professional macanic And friend. But what should i do if there isn't aftermarket cams? Down size pulley and retune?

 

Yes

 

Why are you concerned about the cams?

 

It runs great . But I don't know if it has new cams in it. I have contacted a professional macanic And friend. But what should i do if there isn't aftermarket cams? Down size pulley and retune?

 

I run a 2.7 and 80s (running e85) all day long on the stock cams. As long as your tune is fine, you're fine.