Description
Cam - 521 Series - Chain Drive - M8
Aggressive pulling power with a “nasty” sound, the Reaper 521 grind will shine in 114” and larger cubic inch engines with added compression ratio, Ported cylinder heads are not required, but will complement the cam and add even more pulling power throughout the range, Stock throttle body produces an excellent powerband; use of a high-flow throttle body may increase peak power numbers, A high-flow exhaust system and air cleaner is highly recommended for optimal performance, Rpm range 2250-6250, Made in the USA, Cam specs measured in the engine on the lifter @ 0.050 using a 1.61 rocker arm ratio., Feuling recommends matching 521 cam with Race Series oiling system., Requires high lift springs on Gen 1 engines., Heavy-duty one-piece pushrods are also highly recommended.
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