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Duration at 050 inch Lift
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Advertised Duration
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Valve Lift with Factory Rocker Arm Ratio
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Lobe Separation (degrees)
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Intake Valve Lash
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Exhaust Valve Lash
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Summit Racing Equipment® Pro BBC LS Firing Order Hydraulic Roller Cams SUM-1255-H-O

Summit Racing Equipment® Pro BBC LS Firing Order Hydraulic Roller Cams SUM-1255-H-O

Big Block PRO BBC H.R. 5 H.O. Cam, LS Firing Order, 232/248 Duration @ .050, 110 LSA + 4 Adv., .624/.624 with 1.7 ratio, .661/.661 with 1.8, 3000-6500

Part Number: SUM-1255-H-O

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air