[jopper]

My last engine had a Crower steel roller cam. I used a bronze gear on the MSD distributor and had 10K miles on it when I pulled the engine to replace it. The gear had a good amount of wear but was still working fine.

My new engine has a Comp cams roller cam. I haven't fired it yet, but I have had the same response as Ray R from Comp cams. The last guy I talked to said I should be fine with the cast gear on the MSD because my cam is cast. The cam is supposed to be austempered which is a hardening process used with cast cams to harden it for roller profiles. But I'll bet it's harder than the cast distributor gear.

I was going to break the engine in with the cast gear, and keep an eye on it, I has no idea it would go south so fast, but thanks to Ray's post I now will go with a steel gear on the distributor.