Quieter and smoother engine operation. Increase oil pressure, scavenge volume and engine oil flow. 15-35 degree cooler engine temperatures. 15-30 degree cooler oil temperatures. 15-30 more PSI of oil pressure. Eliminate wet sumping, blow by and oily air cleaners. Heavy duty .165in. wall one piece pushrods reduce valvetrain harmonics and increase valve lift. Kits include: Feuling High Volume Oil pump, High Flow billet Camplate, Reaper series camshaft, hydraulic roller lifters, fixed length pushrods,=Timken/ Koyo cam bearing, rocker arm studs and nuts, gaskets, O-rings, ARP cam/ crank fasteners, washers, moly lube and Loctite. 405 cam produces a wide powerband, increasing torque and horsepower throughout the entire rpm range compared to stock. Responds well with slip-on mufflers and/or a complete exhaust system and high-flow air cleaner. RPM range 1700-5700.465 cam is an accelerator, producing solid bottom-end performance with substantial gains above 2800 rpm compared to stock. Responds well with increased bore and/or compression. RPM range 1850-5950. Made in the u. s. a.