HH56 wrote:
Believe it is 38 studs for your engine and the tightening sequence is below if you need it.

If you or your mechanic use a decent stud extractor they should unthread without too much difficulty. Be aware though that many holes go directly into the water jacket and seepage in the threads may have rusted the stud and make them hard to remove. It is even possible one or more will break. If any do break another thing to be aware of with your 48 22nd series engine is it may be one made in the time of the transition when the stud threads were changed. This article shows and mentions the difference so be sure to replace any broken studs with the correct item.

One wrong stud-hole combination will still thread but may leak excessively and the other wrong combo will not thread in more than a few turns without force and probable damage to threads or stud if it is forced.