Re: Several questions...

Posted by PackardV8 On 2012/2/18 17:32:35

What strikes me as odd is that the article states that the NEW (rolled) is NOT i'changelable with old (cut) studs and that NEW can only be used in the new engines mfg'd for NEW stud. It begs the question as to whether or not the the OLD stud can be used in NEW engine too.

One would have to study the old engine vs new engine stud holes for any recess or lack of recess of the female threads in the blocks. And study the variation of studs as old vs new.


The article states that the NEW stud was developed to prevent water leaks. I kind of doubt that since i'm fairly sure that permatex was available at that time. Most likely the stamped,pressed or rolled stud was for a strength issue at where the thread ends at the shank of the stud, allowing the threaded portion of NEW stud to set a thread of two below fire deck of block and also the rolled thread cheaper to make.

NOTE that any DIE CUT MALE thread usualy requires the die to be turned upside down to complete the cutting of the last 1 to 3 threads of any application.