Big Block? Since when did a 79 'Bu, big block or otherwise, come stock with a serpentine belt system? Not sure here but think that mill could be an LS series motor that has been cosmetically adjusted to look like what would have appeared under the hood back when the car came off the factory floor. It could still be a big block in that it is an LS or LSX motor or something along that line, or a take out from a late model Camaro or Vette, or possibly even a 502 or a crate 572, but in that case, the four? speed could be a 4L60 or L80 or even the electronic L65/L85 versions of them. Would go a ways towards explaining why no interior shots.
