Hydraulic Roller - Nitrous HP: 175+ HP nitrous, 2500+ stall with lower gears and headers.; 288/315 Advertised Duration, 236/248 Duration .050", .520"/.540" Lift, 113 Lobe Separation; 2400 to 6500 RPM range; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump;
