Hydraulic Roller - Xtreme Energy: Street/strip applications with 10:1+ compression and 2800+ stall. Rough idle, needs good intake and headers.; 288/294 Advertised Duration, 236/242 Duration .050", .521"/.540" Lift, 110 Lobe Separation; Adjustable valve train required; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump;
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