Edelbrock Part # 2039 Performer RPM Top End Kit is designed for 1961-65 Chevy W-Series 409 V-8 engines. This Top End Kit produced 451 HP & 474 TQ on a 409 c.i.d. W Series Chevy with 9.0:1 compression. The kit delivers improved performance in street applications from 1,500 to 6,500 rpm range. This kit includes RPM Air-Gap intake manifold, RPM cylinder heads, pushrods and Rollin’ Thunder Hydraulic Roller camshaft, timing chain, 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. However, 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.