I remember now
Was driving me nuts i could not remember who built the 500 plus cubic inch small blocks, well it turns out it's Sonny Leonad. Talked to one of the people at Sonny,s and he explained to me that Sonny had in fact built a 505 small block approx 10 years ago on a after market block. Recently he built a 524ci small block for a grudge racer but that engine was based on a block cut from a chunk of billet aluminum.