i found a set of 406 heads today. The casting s are C2SE 6090- B or E ? other castings are IM19, IM20. He is asking $250 what do you guys think. I am building a 406 for my 65 F100. What other combinations and parts should i look for to build a stout and healthy 406. What is the best intake, block, pistons, rods, crank, etc. Looking for around 500-600 HP if possible if not oh well I just really want to build a 406.
Thanks
