Edelbrock part #2071 Performer RPM Top End Kit is designed for 2008 & Later LS3 engines. This Top End Kit produced 505 HP & 471 TQ on a 6.2L LS3 engine. The kit delivers improved performance in street applications from 1,500 to 6,500 rpm range. This kit includes Performer RPM intake manifold, E-CNC cylinder heads, pushrods and Rollin' Thunder Hydraulic Roller camshaft, complete bolt kits and an Edelbrock gasket set. To get great performance out of any engine, all of the components must work together. For over 30 years, the Edelbrock Total Power Package system has solved the parts matching puzzle for many street performance enthusiasts. With the introduction our Power Package Top End Kits, now you can get the best Edelbrock performance in-one-box, under one part number with "no guesswork" involved.