On the eastern side of South Dakota, CNC Motorsports has been building some of the meanest V8’s in the country. Using their state of the art facility, CNC’s team is able to build just about anything and then dyno test it in house. Usually posting the results to their YouTube channel.
This time their team maxed out a 415 ci Motown build. Using a Callies crankshaft, Callies connecting rods, coated Diamond pistons and upgraded wrist pins; CNC’s team had a clear goal of building a reliable 1500+ horsepower monster capable of pushing some serious boost.
At the front of the engine sits an F-1X series Procharger, a 2000 cfm beast capable of up to 38 PSI and gobs of power. The charged air flows through a water/air intercooler, a Wilson throttle body, ported intake manifold and then a set of Air Flow Research 235 CNC ported heads bolted to the block with CNC custom solid roller cams inside.
To help keep this Procharged Motown happy, CNC used a fuel injected setup with Wilson fuel rails utilizing E85 for fuel. Although E85 does have less potential energy than pump gas, requiring roughly 30% more fuel. On a boosted motor, using E85 instead of pump gas creates a cooler and higher density burn. This allows for higher cylinder pressure, a higher boost target and more timing advance before reaching MBT or knocking.
With a target boost of 28.5 PSI, CNC was able to get 1,597.3 horsepower at 7,100 RPM and 1,234.9 lb-ft at 6,300 RPM out of this 415 before deciding they had reached the maximum safe power for this build. We’ll be keeping an eye on CNC Motorsports’ channel for more great builds in the future.