Okay I hope someone could answer this. Looking to see how much thread(length) is neccesary in the block for the exhaust manifold bolt/stud. Have a set of headers and going to buy studs so I need to know so I can get the appropriate size. Thanks in advance. -marty

 

I converted the stock manifold to headers on four cars with the original fasteners.
FF

 

Unfortunately I have the 4.7 "broken" manifold bolts. -marty

 

The parts guy at a Dodge dealer should be able to give you the dimensions.
FF