another j head question

63dartman,
As for the bolts just use the mopar performance head bolt washers as they come 10 to a pack or at least they use to.Then as for milling you have to remove that much from each head if the amount is to be taken off each head. Mopar says to remove .012 for every .010 off the deck. The head bolt washers are about 1/8 to 3/16 thick and are beveled so use the concaved side down, and you wont have any problems with the bolts. You can take .020 less on the intake side if your worried as most heads can be cut .020 without being machined on the intake said. But when taking this much watch out for the end rails of the intake manifold as this will close the gap in a hurry so machining of the end rails may be necessary, as the end rails will drop twice as fast as the sides will, so if your taking .072 per side then the end rails will drop .144. Then the use of silicone will do the job in place of the end gaskets. Some manifolds will be somewhat flat and if this is the case then have your machinist use a end mill and mill just the rail and if theres a lip left on the manifold where the end rail doesn't touch leave it as this will sit down into the lifter valley and help to keep the oil leaks down as the oil will have to get by the lip and block and then the sealant or the gasket. Neat little trick that helps to keep the intakes from leaking. Don't have him take anymore than need be to make the manifold fit, and you may not have to take anything off.