Hydraulic Roller - Computer Controlled: Street/strip applications. Needs 2500+ stall, lower gears and custom tuning.; 290/307 Advertised Duration, 230/244 Duration .050", .510"/.540" Lift, 112 Lobe Separation; 2000 to 6000 RPM range; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump;
