[Alan Roehrich]

The 840 heads are some of the most commonly used cast iron closed chamber rectangle port heads from 67 to 69, on Chevelles, Impalas, Camaros, and Corvettes. They are pretty popular with racers as well as restoration people.

As I said, how fast they sell and what they bring depends a lot upon the condition. Racers are not as hung up on a particular date code or whether the pair has matching date codes. Racers are more concerned about the condition of the heads, the less work they've had done the better, if they've been ported at all, been radically milled, or had bigger valves put in them, racers don't want them. And racers often won't pay a big price for a set of plain stock heads. Note, there's a difference between stock heads, and heads built for Stock Eliminator.

The restoration guys are more concerned with the date codes, they need a matched pair, with date codes on each head within a week of each other at least, the same day is ideal, in a certain range, usually 30 days, some will go as far as 60 or 90 days. For example, a guy restoring a car built in March of 69 will want castings within a day or two of each other, in January or February of 69. They can't use a set cast after March of 69, or before October of 68. That's why I said that, to get a premium price, you need a nice set of heads, and they need to have matching date codes a buyer with money needs when you have them for sale. If the guy in my example hasn't found any heads to go on his project for a year, he's getting to the poiunt where he has to have a set, and your heads are a nice pair of February 69 heads, you can name your price, within reason. But if your heads are not matched, and/or cast after March 69 or before October of 68, they're not worth a thing to him.

Chad gave a perfect example. Their heads were in excellent shape, by a well known shop, with very close date codes. Heads were bringing better money than they are now, way better. And they found a guy who needed a set of heads with that casting number and those date codes. And the guy had money to spend. So they got a great price for their heads.