340 with 302 cast head for pickup

While I'll give you that the engine does sound decent (audio cuts out past about 22 sec), the combo does sound like it would need some tweaking...but I still wouldn't use the 302 heads unless you absolutely needed it to run, like...today or tomorrow.

But, with that same calculator above, I used 4.08 bore, 3.31 bore, stock type felpro 0.053x4.18 gaskets (because if you use anything less, you'll be running a little too close on the piston to head clearance with your slugs out of the deck), 0.010 out of the hole, 6cc valve reliefs, .30" first piston ring, .0025" wall clearance, and 59cc combustion chambers (can be typical for 302 heads)...I still only came up with 10.4:1...totally livable on pump premium if your setup is done correctly.

You find any other heads yet?