Pinning Intermediate Shaft?

I'll just say this I've never built an engine from scratch that I didn't have a hardened/pinned Gear in... yet I've never had a stock V8 that ever spun the gear that i know of. Now I have built many engines and one of the 390 Ford FE Motors that I built received a high volume oil pump to which the stock oil pump Drive used twisted and snapped upon firing the engine. Deduce and choose. HV/HPSI pump =hardened shaft males sense to me.
To each their own.