The valvetrain parts in an HO are the same as the standard engine. Standard 400 parts are the same parts where specified as such. The auto HO and auto Ram Air were not the same as the manual trans version, they did up the cam in most of the manual trans high performance engines.
The early '60s "Armasteel" and later nodular cranks are not "forged" cranks. They are cast iron, but are a different composition using spheroid graphite iron (nodular) or pearlitic malleable iron (Armasteel).
Ram Air IV was a performance engine. It had a lot of components that differed from the stock '69 400/HO/RAIII.
The same rods were used too, until Pontiac came out with SD rods later. There weren't "Ram Air" rods and "2 bbl" rods.
Vikki 1969 Goldenrod Yellow / black 400 convertible numbers matching
