Hydraulic Roller - Xtreme Energy: For high performance street engines, needs 2500+ stall, improved intake manifold, headers and lower gears.; 282/288 Advertised Duration, 230/236 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;
