Can anyone give me an accurate figure for what my heads might be worth. I have a set of 414 heads on a 383 and the vehicle might be going up for sale. The vehicle itself isn't that special, and I don't want to give away a set of rare heads with it. What I have found is that they were produced from 64-70 and were used on Z/28 camaros and LT-1 corvettes. They are 64cc chambers and they have the big valves. When I went to get the motor built, I brought extra heads and a block to trade for some of the labor. The owner of the shop asked to make sure which heads I wanted to use on the rebuild, even though I had already said. Then after I described them by casting number he replied, "yeah, those are some pretty rare heads." Guy prabably would have snagged them if I didn't know the difference. Anyway just thought i'd ask to see what comes up. I wouldn't be selling the car if I didn't need the money, and if I can get a premium from some guy restoring a Z/28, cool. Or if it turns out they aren't that rare, I won't feel so bad about selling that motor with the car. Thanks in advance for the info. This site rules! By the way, the motor screams like a champ. I love chevy power!