S&S, 631 cam for Evo Big Twin

S&S, 631 cam for Evo Big Twin

.630" valve lift. For high RPM street/race applications with 11:1 and higher compression ratios. Great performance cam but hard on valve train components. Can also be used with solid lifters. Valve spring spacing and other normal clearancing checks required. 4500–6500 rpm.

Fits: > 84-99 Evo Big Twin (NU)