I am currently running a set of 340292 heads on my car. They seem good but I'm going to be doing a rebuild and I was wondering if these would be considered "good" heads or if I should be looking for new ones. I know it depends on what else I run but I was just wondering. Does anyone know what these would have been used on originally? I also have the heads that were on the car (#3998920- or at least that's what it looks like), are they worth trying to sell or are they just plain-old-nothing-special heads?

At the bottom of my page you will find a link to the codes page for this site it can tell you more than I can.

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http://www.members.aol.com/bannervoss/85z28.html

Thanks, I looked them up and now have a better idea (2.02/1.6 valves, 66cc). It looks like I need to get some of the other numbers off the heads so I can narrow it down some more as to what they are from. That's a nice ride you've got there! Thanks again.