Are low-mile E7 take offs worth anything?

Yeah, they should be worth something. Maybe more in a few years. I have a dozen sets of 302 heads, so I don't need more. But.... I also have 66 Chevelle with a generic 350. No stash of chev stuff. My experience has been that finding good, used, stock parts is much harder and pricer than 5.0 stuff. People think 283 powerglide stuff is historic and made of gold! Most of it has been used up, bored out, ruined or patched and is becoming somewhat scarce.

So hold on to those E7's!
 
Probably some truth to that but with the sheer number of vehicles that came with e7 s it will likely be quite some time before they enjoy that status. Its not like we are talking GM camel hump heads or Cleveland heads here.
 
I've got quite a few sets of heads, intakes etc laying around. All old stock stuff that i can't seem to get rid of. And I always think to myself that I'm better off keeping them for something down the road
than selling them for $20
 
On the other hand, consider the mission statement that Craigslist and eBay were founded on...."somewhere there's an idiot who will give me too much money for this"