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Edelbrock Performer-Plus camshaft for Buick 321-252 Even Fire V-6 applications.

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Edelbrock Part # 5487 Performer-Plus camshaft is designed for Buick 321-252 Even Fire V-6 applications. The camshaft will produce optimum torque from the low-end to the mid-range, Performer-Plus camshafts match with Performer manifolds for vehicles operating from off-idle to 5500 rpm. This Performer-Plus is a smooth idling cam for daily drivers, trucks, vans, RVs and 4x4s. You can expect a major improvement in throttle response and torque. All camshafts include flat tappet lifters, assembly lube and instructions.Camshaft Specifications: • Duration @ .050 Intake: 204 degrees • Duration @ .050 Exhaust: 214 degrees • Lift @ Valve Intake: .448” • Lift @ Valve Exhaust: .472” • Lobe Separation: 112 Degrees • Intake Centerline: 107 Degrees • Idle Vacuum @ 1000 RPM’s: 15”

Documents & Installation Notes


Availability Available
Application Universal
GTIN 00085347054879
Availability Note Available to Order
Warranty 12 Months
Emissions Code
Hazardous Materials Warning WARNING: This product can expose you to Chrome, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit
Installation Notes
  • For non-computer-controlled vehicles.
  • Use only stock ratio rocker arms
  • Adjustable valvetrain required
  • In order for this Performer RPM cam and lifter kit to be covered under ANY WARRANTY you MUST use the correct Edelbrock Sure Seat Valve Springs or equivalent.
  • Do not use rotator type valve springs or retainers for this application.
  • Oil/additive must contain Zinc designed for use with flat tappet camshafts.
  • Coat cam lobes and bottoms of each lifter with MoS2 lube (supplied) to prevent cam lobe and lifter wear from occurring during initial start-up.
  • Do not allow the engine to run under 2000 rpm for the first 1/2 hour. Slow idle speeds may result in severe cam and lifter wear. Start the engine and bring to break-in rpm.
Advertised Exhaust Duration 290 deg
Advertised Intake Duration 280 deg
Cam Type Cast
Exhaust Duration at .050 inch Lift 214 deg
Exhaust Valve Lift 0.472 in
Intake Valve Lift 0.448 in
Lifter Type Hydraulic
Lobe Separation 112 deg