I'm not all that knowledgeable... those 3917291 castings were used on
1968 Corvettes with
300hp base engine and on some 350hp engines that year also. But they
were used on other
Chevrolets as well, including 302ci and 350ci, and they came in small
and large valve versions
(1.94/1.5 vs 2.02/1.6). The large valve versions would be more
desirable. The
more sought-after heads of that era are the "461" castings. I can't
claim to know their value, but I expect if they are in decent shape,
have the larger valve seats, and at least two of them have similar
casting dates, a pair of bare castings ought to bring at least $100 to
$150... but when you have three heads, selling ONE head might be a
problem since you need to find a buyer with one bad head.

I did a search of recently-completed eBay auctions on pairs of those
heads (you have to be registered on eBay to search completed items)...
only 1 set out of 3 sold, for $250, and it had valves, studs, and
rockers; the others were bare: one pair of large-valve heads had no
takers at $300 reserve, and the other set had small-valve seats and no
takers at $150:

Buying heads via eBay is risky, because if they turn out to have
defects, the shipping charges are so high (weight is about 90# per pair)
that even if the seller will take them back, returning them isn't very
cost-effective.

I've seen the 461 (same basic head) for $250-$350 done.  Ones that need a
valve job and such should be $150 less average.  So his price is about
right.

A guy that owes me $200.00 has offered in

take em and call it even ,you'll prob never see your money anyway

Wayne, Tom and Kickstart, Thank You so Much for your input. I Greatly
Appreiate it!

Jeff

I_Have_One@webtv.net

http://community.webtv.net/I_Have_One/Casull290ForSale

The 291 feulie heads were fair performance heads 35 years ago. But chances are
that they've been machined a couple times ( at least )m, had a few valve jobs
etc...so to salvage them into anything useable is very expensive. Even a decent
set isn't worth much nowadays because off the shelf Vortec truck heads flow
more, and make a ton more HP and torque for $450 brand new,. It would cost you
that much to ,make these old heads work half as good.  The 291 heads often
didn;t have accessory holes on them. They were common on 327 Impala's, camaros,
some corvettes. Used on the 250hp motors mosty. That was 250 in the OLD
measure. That same 1968 250 hp motor makes about 175 under the new standards.
So a 250 2004 motor makes a LOT more power that a 1968 250 hp motor.  The new
vortec heads will easily support 400 hp. You'd have to spend a fortune on those
old 291 heads to get even close. Take 'em if you have no hope of ever getting
your cash. Old heads are better than nothing.