This is a big block Chevy, set-up with a set of Crower mechanical fuel injectors. These systems are primarily for racing use only, but nobody told us that, and we have been setting-up and running engines like this "successfully" on the street since the 70's! The truth is, these systems can indeed be run on the street, and these days, they can even be set-up with electronic fuel injectors, so you get the killer looks of mechanical injection, with the easy running of EFI.