This Chevy race engine is designed for circle track use in the IMCA Sport Mod and Hobby Stock classes. It features a strong four-bolt main block and iron Vortec cylinder heads. A unique dual-pattern camshaft helps deliver more than 300 lb.-ft. of torque between 2,000 and 5,500 rpm ? peaking at 396 lb.-ft. at 3,800 rpm. With that much pulling power, you can hold a gear longer, keeping the engine in its sweet spot for quicker laps. [links]