Hydraulic Roller - Xtreme Energy: Street/strip applications, 9.5:1+ compression, intake, headers, gears and 3200+ stall.; 294/300 Advertised Duration, 242/248 Duration .050", .540"/.562" Lift, 110 Lobe Separation; 2800 to 6100 RPM range; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump;
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