Quote:
Originally Posted by Tim Brewer
My question is to you is what made you want to change the distributer gear? Someone tell me if I'm wrong, but a steel gear is for a roller cam and an iron one is for a flat tappet cam. Either is bad in the wrong situation.
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Well, this will open a whole can of worms!
Generally you are correct, so I would assume he has a roller cam as he is an experienced builder.
You do have to be carefull with the generalization of when an iron, steel, bronze, or composit gear is used. Some manufacturers like Comp Cams make a retro series of roller cams with iron cam gears. They are designed to be used with the original iron distributor gear while getting the advantages of a roller cam. Personally, I would never use a composite or bronze gear as they are considered consumables and while the composite will last longer than the bronze, both require periodic inspection and eventual replacement.