Seller notes

For 1971-1977 GMC Sprint Camshaft 69551FR 1972 1973 1974 1975 1976 Review Fitment Notes to Ensure Proper Fit Condition: NewBrand: MellingNotes: Performance -- Class 3, Rough Idle With Mid To High RPM Torque And Horsepower; Lower Engine Vacuum Than Stock; Advertised Intake Duration 303; Advertised Exhaust Duration 313; Hydraulic CamshaftLifter Type: HydraulicExhaust Valve Lift: 0.508 inIntake Valve Lift: 0.488 inExhaust Duration at .050 inch Lift: 244 degIntake Duration at .050 Inch Lift: 234 deg...

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