COMP Cams 01-409-8 - CamShaft, CBVI XR258HR-10

Hydraulic Roller - Xtreme Energy: Great low end torque, good for towing or in RV. Works with stock intake and exhaust.

Hydraulic Roller - Xtreme Energy: Great low end torque, good for towing or in RV. Works with stock intake and exhaust.; 258/264 Advertised Duration, 206/212 Duration .050", .510"/.510" Lift, 110 Lobe Separation; Adjustable valve train required; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump;