I’ve been running a Crower grind number 285R solid-lifter roller-tappet for about 15 yrs. Adv duration int/exh 285/292 … duration at .050 254/260 … lift .597/.578 … 106 deg lobe separation. Makes great power even at low rpm all the way past 7500. Will idle down to 900 rpm but that’s with individual runner induction. Used with Comp Cams Pro Magnum roller rockers on iron headed 322 cu in stroker.
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