Crane Cams 13750-16 BBC Gold Race 1.7 Roller Rocker Arms- 7/16in Stud

They are unquestionably the most rugged and accurate on the planet, and built to handle spring pressures of 700 pounds standard or 900 pounds wide body. One reason this statement can be made is that the latest in multi-axis cnc equipment is used in their manufacture, and only one fixturing operation is employed. This eliminates the tolerance stacking that occurs when parts are made on multiple machines.