In the world of competitive drag racing, prying secrets out of a racer or engine builder is a tall task, as each incremental improvement is hard to come by and often costs cubic dollars to achieve. The guys at Steve Morris Engines up in Michigan recently put together this 23-degree small-block Chevrolet for customer Domenic Friguglietti and did some dyno testing with a variety of superchargers on board, seeking that competitive edge.
It’s not often dyno video even exists on one of these combinations, let alone one where the torque, boost, and horsepower numbers are shared with the public. Friguglietti competes in the Midwest Outlaw Racing Series, the NMCA’s Xtreme Street class, and other venues with his fourth-gen Camaro, and has been working towards finding a home at the top of the heap by sourcing the expertise of Morris and his team.
According to SME’s Alex Esnaola, “We cannot go deeper into the inner workings of that engine, other than what Steve mentions in the video. As you well know, engine building at these levels is a cut-throat business. Others would love to know what we did to make that kind of power.”
He did tell EngineLabs that the engine uses a set of custom 23-degree inline-valve cylinder heads designed to make big horsepower through the use of one of SME’s custom-designed camshafts and the gear-driven Vortech XB-105 supercharger mounted to the front of the engine, sucking through one of SME’s Pro-Volute systems. The entire engine was machined, balanced and assembled in-house at SME, and uses a Holley Dominator EFI system to control the engine’s parameters, also tuned in-house by SME.
The engine is run up to 7,200 rpm, makes just shy of 30 pounds of boost pressure in the process, and twists the dyno to 2,025 horsepower. Morris also shares some other details of the engine’s performance, along with its capabilities when various ProCharger superchargers were used in testing with the same powerplant.
Turn up the volume and enjoy the sound of this insane small-block on the dyno!