Whats better for billet steel cam? Anybody using the comp cams composite? Also anybody know the size of thunderbolt IV distributor shaft? Thanks.

Don't know about about the composite gear, have always used the bronze. Anyway, the thunderbolt distributor has a .491 shaft, same as a GM distributor. Most, if not all, of the aftermarket distributors use a
.500 shaft. Eddie

Thanks. How often do you change your bronze?

I change them every year, at the beginning on the season. It is cheap insurance.

I Have Run The Comp. Gear For 2 Years Had No Problems Yet

Being that the bronze gears are a wear item that often need replaced, Crane says 2K street miles and once per season in marine. I would not want that bronze in my oil so the $100 Comp gear seems a bargain.