Hydraulic Roller - Xtreme Energy: Great for street machines, needs intake, headers, 2500+ stall, and gears.; 282/288 Advertised Duration, 230/236 Duration .050", .510"/.520" Lift, 110 Lobe Separation; For '87-'98 305 or 350 Small Block Chevrolet Engines Originally Equipped with Hydraulic Roller Cams; Valve spring upgrade required; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump
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