The Edelbrock #2089 Performer Top End Kit improve the performance and drivability in the low to mid rpm range. The Edelbrock #2089 kit include Performer EPS intake manifolds, E-Tec 170 cylinder heads, pushrods and Rollin’ Thunder Hydraulic Roller camshaft. They are intended to make your engine more efficient, with the potential for increased mileage. 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. The Edelbrock concept of selling dyno-matched components has been popular since 1987. 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.Installation Note: • For S/B Chevy, 1987 & later • Results on a 350 c.i.d. S/B w/9.0:1 compression and retro-fit hydraulic roller cam. • Proper installation is the responsibility of the installer. Improper installation will void your warranty and may result in poor performance and engine or vehicle damage. • Use RTV sealant to properly seal end seals, such as Edelbrock High Temp Silicone sealant #1076, DO NOT USE END SEALS GASKETS. • Sealant must be used on intake bolt threads if the threads extend into lifter valley or coolant passage. • NPT/Pipe thread fittings require the use of Teflon tape or paste on threads to ensure proper seal. • DO NOT OVERTIGHTEN NPT/Pipe fittings, this may cause the aluminum to crack around the fitting boss. NPT/Pipe thread is a tapered thread.