Noisy Performance Gear DriveSmall Block Ford Engines289, 302, 351W, & 5.0LNoisier SoundIncludes:Single-Bolt Cam Gear3-Keyway Crank GearDual Idler GearsThrust BearingCam Button JEGS 555-20341 Noisy Performance Gear Drive:Fits Ford Small Block V8 enginesPrecision Gear Drive Timing SetAll Gears Are 8620 Carburized SteelTiming Adjusted With 3-Keyway Crank GearSpacer cast into Sprocket HubDiscard separate cam shaft spacer from older enginesProvides an accurate & consistent relationship between cam & crankshaft without common timing chain wearFits under stock or aftermarket timing covers