MILWAUKEE EIGHT CAM – 521

Description

521 CAM – Strong overall torque for 117″ engines and stump pulling low to mid range torque in 121″+ engines. Better street manners and less exhaust choice dependant than the 508/538. Ported cylinder heads are not required but will complement the cam and add even more pulling power throughout the range. The stock throttle body produces an excellent powerband and use of a high flow throttle body will increase peak power numbers. A high flow exhaust system and air cleaner is highly recommended for optimal performance. FEULING recommends matching this cam with our RACE SERIES oiling system.NOTE: High Lift valve springs are required on stock Gen1 cylinder heads, see FEULING BEEHIVE valve spring kit 1107 (DRAG 0926-2973) or 1108 (DRAG 0926-2974). SE cylinder heads have high lift valvesprings and will accept the 508 and 521 grind cam. Heavy Duty one piece pushrods are also highly recommended see 4087.VVT Models: Requires FEULING camshaft sprocket 1095 (HD 25400103), HD timing cup 18400117, Feuling sprocket retention kit 3042 and Feuling camshaft spacers 8041. Must also be able to turn VVT feature off in ECM.Part 1346 RPM range 2,250 – 6,250. Grind: 521 Valve LiftOpenCloseDuration @ 50″ lift @ TDCLobe CenterlineIntake.51817 BTDC34 ABDC 231.16298.5Exhaust.521 51.5 BBDC 11.5 ATDC243.125110Overlap: 28.5 *Cam specs measured in the engine on the lifter @ 0.050″ using a 1.61 rocker arm ratioDISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VECHICLEFeuling® does not recommend tuning beyond stock emissions standards.