the timing gear is bolted to the cam, so there would be no wear between them.i dont think that there would be any real difference between the two different types of metal that the gear is made from except for maybe a slight weight difference for performance reasons.
how much of a $$$ difference between the 2 that you are looking at and who are they made by? it might just be a personal choice as to which one you opt for.
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650 Holley DP,Flowmaster American Thunders,H-pipe,American Racing rims, short throw shifter, T-5 ,
Zoom clutch, Dynagear timing,Kenwood stereo,FMS sparkplug wires,GTS smoked light covers
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