Originally Posted by EFI-Unlimited

I have not known any 4.6 pistons to sit that far in the hole, but if yours truly are, then your only real option to correct it is either a piston with a taller compression height, or a longer rod (or perhaps a crank with +.240 stroke . Offset wrist pins refer to a wrist bore that is off center of the piston centerline, to reduce rod angularity on the power stroke. They are not a solution to the problem you have. If you go decking a ton of material off the block, I think you will run into integrity issues, as well as cam timing issues. Unless you get adjustable cam gears, the more you take off the head and block, the more retarded your cam timing becomes. If you take off enough material, you may have timing cover fitment issues as well.

In my opinion, I would start paying attention at a total of .060 cut from both the head and block decks.

Brian
EFI-Unlimited