The Pontiac websites are talking about this too. The Pontiacs run over 350# pressure "over the nose" on a performance flat tappet cam like the RAIV grind. I've started using the STP ZDDP additive in my LeMans and Bel-Air. Some guys are using the Rotella diesel oil, EOS, or other racing oils with zinc additive package.

Preaching the Hot Rod Gospel according to the 4-stroke apostles:

Suck, Squish, Fire and Fumes