Hydraulic Roller - Magnum: Limited street/bracket racing. 10.5:1 compression. 3500+ stall. Headers and race intake.; 314/314 Advertised Duration, 252/252 Duration .050", .600"/.600" Lift, 110 Lobe Separation; 3500 to 6500 RPM range; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump;
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