Video: CNC-Motorsports Builds ProCharged BBC And Crushes The Dyno

The guys at CNC-Motorsports are well-versed in making horsepower, as evidenced by this sweet 540 cubic inch big-block Chevrolet on their dyno making monster power. Built from one of Dart‘s Big M engine blocks and a Callies Dragonslayer forged steel crankshaft, the pump twists the dyno needle to a whopping 1,551.6 horsepower at a relatively-low 6,800 rpm, with over 1,200 pound-feet of torque available from 5,100 rpm through 6,700 rpm — a real stump-puller, torque beast.

cnc1With a goal of 1,500 horsepower from the start, the robust internals and foundation were necessary. Also on the inside, a set of Callies Ultra I-beam connecting rods and JE pistons help to turn the boost pressure into horsepower. The high horsepower level necessitated an upgrade to H-13 tool steel piston pins for strength reasons. Total Seal‘s AP steel piston rings were selected for their proven ability to handle elevated boost levels.

Valvetrain consists of a set of Crower Severe Duty mechanical roller lifters riding on one of CNC-Motorsports’ own custom grind camshafts, actuating the valves in a set of Airflow Research 385cc CNC-ported aluminum cylinder heads. Induction duties are handled by a Brodix HB2000 intake manifold and custom-built C&S 4150-style carburetor, featuring dual needle and seats to permit the proper amount of fuel flow.

Out front, one of ProCharger‘s time-tested F-2 superchargers sits in a side-slinger configuration, delivering 17 pounds of boost pressure through the ProCharger induction hat in the blow-through application.

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Click to enlarge.

“This engine met the personal goal of what the customer was after,” says CNC’s Clint Anderson. “There’s more in it; you could throw more boost at it. It’s got a real nice conservative tuneup.” A solid engine that makes serious grunt, and sounds awesome in the process.

For more information on what CNC-Motorsports can do for you, check out their website.

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About the author

Jason Reiss

Jason draws on over 15 years of experience in the automotive publishing industry, and collaborates with many of the industry's movers and shakers to create compelling technical articles and high-quality race coverage.
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