The 400- and 455ci block castings remain the most popular foundations for modern Pontiac builds, but the Division produced several variations during the 1960s and 1970s. That begs the question ...

but the durability of the short-block was always an issue. Don't tell any of this to Bill Taylor of Oceanside, California, who swears by stock factory castings and says the Pontiac 400/455 can go ...