.006 warp

I think I'd clean up both surfaces VERY well. Then with NO casket, etc. I'd bolt on the head with just the bolts at the very end with ~75% of full torque. Then I'd take my feeler gages and "survey" all around the head/block gap. I'd then do the same with only the other end bolted down. May be even do it with the center only bolted and torqued. This should give you a good idea of how and especially where the .006 warp is. As I read the other replies, if you find the warp is even all across the end opposite the bolted end and "flairs out" as you go toward the bolts, then the head should "pull down fine" using the correct tightening sequence. Maybe someone will see this and comment - AL E??

What I'd be especially looking for is a sudden change from the .006 or having only a corner gaped open in my "test." That would indicate a deformity rather than a simple warp. A simple warp should evenly "roll out" as you torque the head down. Think of a simple leaf spring and that is a simple warp of the leaf. When the spring is "loaded down" it straightens out evenly along the length, the head should do the same. You might need to recheck the torque more often to be sure the head does not lift up AT ALL.

Regards,
Larry