There have been several under 40 dollar (need rebuild) FE heads popping up on Craigslist lately. These all seem to be pre-1966 heads. I've read that they do flow better than the C6AE's which I THINK are on my truck now. So when I finally get around to doing the motor rebuild, would these be a good set of heads to use after headwork, or are my current heads better?

 

You have a '73? With hardened valve seats. Your current heads are fine.

Do you have headers? 4bbl intake?

Your stock heads are not the bottleneck in the system.