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Energizer Rocker Arms AMC American Motors (Formerly Hi-Intensity Rocker Arms) Die Formed Aluminum Body with Needle Bearing Fulcrum and Roller Tip. Needle bearing fulcrum and roller tip reduces friction, lowers engine oil temperature, improves response, increases HP and RPM. Aerospace vacuum die-formed aluminum main body offers extreme strength and light weight. Great for street and moderate race use. Die-formed aluminum body is larger than stock, may require modifications to stock valve covers for clearance. Cannot be used with late Chevy 90° V-6 and small-block V-8 "Center Bolt" valve covers. Will not fit 90° V-6 or small-block V-8 self-aligning 88-99 heads.

Part # Description Ratio Stud Diam. Price/Set AMC V-8 66-91, 290 THRU 401 11746-16 STOCK RATIO AND STANDARD STUD DIAMETER MUST MACHINE 74-91 CYLINDER HEADS AND INSTALL 99156-16 3/8" ROCKER ARM STUDS AND AFTERMARKET PUSHROD GUIDEPLATES. SPECIAL ORDER HEAT TREATED PUSHRODS ARE REQUIRED FOR USE WITH GUIDEPLATES. 1.6 3/8" $215 11747-16 STOCK RATIO WITH ENLARGED STUD DIAMETER MUST MACHINE 66-91 CYLINDER HEADS AND INSTALL 99157-16 7/16" ROCKER ARM STUDS AND AFTERMARKET PUSHROD GUIDEPLATES. SPECIAL ORDER HEAT TREATED PUSHRODS ARE REQUIRED FOR USE WITH GUIDEPLATES. 1.6 7/16" $215

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