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Yes, that is an LSX blocked engine on the dyno. The LSX454 is in very early developmental stages at this point but will become a reality soon. The engine was tested to be sure that the priority main oiling system would not have any effects on the VVT, which it has not. Although it is just speculation at this point, the folks at Mast are hoping to eclipse the 650-horse mark with this baby.Mast Motorsports has recently named Scoggin-Dickey Parts Center the exclusive dealer of its crate engines, although Mast Motorsports will be more than happy to answer any technical or product questions you may have.