Ford Sealed Racing Engines are built to professional racing series standards and deliver reliable lasting performance. These aren't built from repackaged production parts, but real racing parts like Forged Crank, Rods and Pistons with full floating piston pins. Based on the Ford Performance BOSS 302 block these engines deliver reliable and consistent performance lap after lap. S347JR has been approved for use in the American Canadian Tour (ACT) Late Model series