The consensus is slightly clearer than mud, gm perfected Hei early on and if you can either find a Langdon converted 82 s-10 6 cyl dizzy, or convert one yourself, or follow Jerry’s tip, you will never regret it or look back. Every other unit is going to be measured against the gm Hei as it is as close to perfect as there is for our application.
If I were you I would drop Langdon a email,( he typically ?will eventually answer) and ask if he has come across any new cores to convert as he simply can’t find any any more…never hurts to ask.. btw- Tom Langdon is a sweetheart of a guy, you will enjoy chatting with a gm Stovebolt legend, he worked in engine development at gm back in the day.
Chuck
