The engine has been in the truck for about four months now, and the Magnum motor was run on Pacific Performance Engineering's chassis dyno and produced some good numbers. The 408 Magnum stroker engine recorded a 543.9 hp at 5,200 rpm. This motor puts out that amount of horses and 565 lb-ft of torque, according to Pacific's dyno charts. The truck is a fully outfitted, streetable machine that has run 11.80 times and will now be fitted with a rollcage for the strip. Thus far, this motor has proven that it does make some serious horsepower.