Again, I'll bet that's a Cast crank, and it's why he's not got a big cam in it....he's just not chasing High RPM Horsepower.

BTW...455 Pontiacs also have HUGE 3.25" Diameter main bearings, combine the long stroke/piston speed with oil that has to flow over 10" just to travel 360 degrees across each journal.

And even the 350 has a 3" main, Probably why there were never too many 350 Pontiacs in Comp Eliminator!