Some Hemi engines and a trans in my sons shop.

TT5.9mag said
I dont get it. So on a 331 industrial hemi the cam spins the opposite direction of the crank? What am I missing?

Chev did the same thing on some truck engines. Those, and reverse marine engines can really "eff you up" if you dont realize what you have........reverse grind cams, etc.

BB Chev truck 366 cid reverse cam drive

68’ 366 Chevy reverse rotation Cam firing order