The Werks Racing Collari .32 Roto Start engine is a BIG block engine designed for use in big rc trucks. At its release time, the Collari .32 was the biggest displacement engine in a big block case. Its design has been in the works for over a year with the express intention to be used in a monster truck. It features a 3-port ABC cylinder sleeve, coupled with a new split-transfer port case. The connecting rod has also been strengthened to be able to handle the greater horsepower. It has a fluted crankshaft and oversized one-way bearing and shaft. This version of the Collari .32 is equipped stock with a roto start backplate. Engine has claimed power output of: 3.5HP and 36,000RPM max.