Originally Posted by Maxwelhse

Despite the comments about over investing in GT40 heads, my local machine shop charges about $125/head to grind the seats, cut the valves, lap them in, square the decks,replace the seals, reassemble and return ready-to-run.

I have no problem with $250 to make sure the combo is gonna run right with an honorable warranty (basically a handshake, but they stand by it).

Just my $.02... I paid to have my GT-40s ported and polished, so maybe I'm not the best critic in this regard.