SOHC - Xtreme Energy: Excellent low and mid range torque with more power. Will work with stock computer, best with custom tuning.; 262/266 Advertised Duration, 226/230 Duration .050", .550"/.550" Lift, 113 Lobe Separation; Requires cam gear set part #10246SET; Requires part #26113-16 valve springs and either 792-16 steel retainers or 791-16 titanium retainers; Part #26125-16 high load valve springs also available