35-234-3 - Camshaft, FW XE256H-10. Xtreme Energy Hydraulic Flat Tappet Camshafts. Hydraulic-Strong torque through low end and mid-range, good idle. All COMP Cams Camshafts are manufactured to the strictest tolerances. Rigorously tested and checked for quality. Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve. More vacuum allows an increase in duration for improved performance & assists power brakes. Excellent performance in street carbureted applications. Best performance with aftermarket intake manifolds, headers, lower gear ratios, etc.