Camaro/Firebird 82-92 5.0L RAM Clutches Powergrip HD Clutch Set, up to a 120% increase in holding power, shipping is not included. Powergrip HD sets are the ultimate for extreme street/strip performance. Using our proprietary 900 series friction material in conjunction with increased clamp load pressure plates, you get maximum holding power for track or street, with only minimal reduction in driveability. This is the set for big power street cars! Some chatter will occur on takeoff. Use only with RAM billet steel or factory nodular iron (explosion resistant) flywheels.