Hydraulic Roller - Xtreme Energy Computer Controlled: Needs modified TPI with injectors, exhaust, 2000+ stall, and custom tuning.; 276/281 Advertised Duration, 224/230 Duration .050", .503"/.510" Lift, 112 Lobe Separation; 1800 to 5800 RPM range; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump;
