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what is the difference between a normal steel distributor gear offered from crane etc compared to the required "melonized one" (aside from price0)and how do I visually tell the difference between them?
I don't believe you could "visually" tell the difference between the two! A steel/billet core "roller cam" requires a "melonized" gear. I would think that any steel/billet core cam should also. Don't know for "fact" but I would think that a GM distributor that shipped with a "roller" engine would have a "melonized" gear.
If you had "any doubts" about what you've got I'd spend the money for one if I had a "roller" engine. If it's a warranty "requirement" for a crate engine from anyone save the receipt with the warranty documents for the engine.
Years ago I believe there were MSD issues. YEARS AGO!!
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