Chevy Edelbrock 2268 Rollin' Thunder Camshaft; Hydraulic Roller For 348/409

Features Include: Performance--roller camshafts generate higher lift velocity and faster valve action for increased horsepower and torque gains Drivability--produces great sounding idle with excellent vacuum at idle Durability--the smaller surface contact area of roller tappets and their reduced friction, together with stronger camshaft material (hardened steel or iron) ensures longer camshaft life Environmental--can use ILSAC GF-4 oil, which lowers emissions and does not require zinc or phosphate oil additives Economy--reduced contact friction between the lifter and camshaft can increase fuel economy for better mileageEdelbrock Rollin' Thunder camshafts are designed to improve horsepower and torque, produce a great sounding performance idle and provide excellent vacuum at idle to support power accessories. Rollin' Thunder camshafts feature more aggressive lift profiles than possible with conventional flat-tappet hydraulic cams, without excessive valve overlap that can compromise low rpm drivability; reduced friction provided by roller tappets makes this combination of accelerated valve lift and reduced duration possible. Edelbrock Rollin' Thunder camshafts are performance matched to Edelbrock Total Power Package components for proven performance.