PERFORMER-PLUS CAMSHAFT KIT FOR PONTIAC 350-455 V8

Brand New Edelbrock Performer RPM Camshaft And Lifter Kit For Pontiac 350-455 V-8 Engines (Part #7157).

Edelbrock part #7157 Performer RPM Camshaft is designed for Pontiac 350-455 V-8 applications. This Edelbrock cam kit produced 422 HP & 441 ft-lbs. of torque when used with #7156 intake and #60599 cylinder heads on a 455 engine. The camshaft works well with high-performance's street applications, Performer RPM cams provide power from 1500 to 6500 rpm. This hydraulic lifter camshaft is dyno-matched to Performer RPM manifolds for high-rpm horsepower while still maintaining acceptable low-end torque. With 10 to 12 inches of manifold vacuum at idle, Performer RPM cams have more lift and duration than most street camshafts. Hydraulic flat tappet lifters are included with each Performer RPM camshaft. 

Installation Notes:

• Recommended Valve Springs for OEM heads: Edelbrock part #5757
  
• 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.

Features:

• Not for 1985-later engines with roller lifters
  
• Screw-in studs, guide plates and adjustable rocker arms required
  
• For non-computer controlled vehicles
  
• Use only stock ratio rocker arms
  
• Adjustable valvetrain required

Camshaft Specs:

• Duration @ .050 Intake: 231 degrees
  
• Duration @ .050 Exhaust: 240 degrees
  
• Lift @ Valve Intake: .470"
  
• Lift @ Valve Exhaust: .470"
  
• Lobe Separation: 114 Degrees
  
• Intake Centerline: 112 Degrees
  
• Idle Vacuum @ 1000 RPM's: 10"
• Lifter Materials: Hardened Steel
  
• Computer Controlled Compatible: No
  
• Advertised Exhaust Duration: 320 deg
  
• Advertised Intake Duration: 308 deg
  
• Lifter Type: Hydraulic Flat Tappet

You can view and download the complete assembly instruction booklet here.