Xtreme Energy Mechanical Roller Camshaft and Lifter Kit
Small Block Chevy 1955-98
• Lift: .552"/.564"
• Duration: 268°/274°
• Lobe Separation Angle: 110°
• RPM Range: 2000-6000
  
  

  Camshaft Specification Table Part Number 12-769-8 Engine 1955-1998 Chevrolet 262ci-400ci 8cyl. Grind Number CS XR268 R-10 Description Intake Exhaust Valve Adjustment 0.016 0.018 Gross Valve Lift 0.552 0.564 Duration At 0.015 Tappet Lift 268 274 Valve Timing At 0.015 Open Close Intake 28 60 Exhaust 71 23 These Specs Are For The Cam Installed At 106 Intake CL Intake Exhaust Duration At 0.05 230 236 Lobe Lift 0.368 0.376 Lobe Separation 110 Recommended Valve Springs 249-977-16

  265, 283, 307, 302, 305, 327, 350, 383, 400, 427, L46, L48, L65, LM1, LT-1, L82, L81, LS9, L83, L98, L05, LG3, LG4, LT1, LT4, Camaro, Corvette, Chevelle, Stingray, Silverado, C10, Firebird, Chevrolet, Chevy, Small Block Chevy, Caprice, Malibu, Impala, Nova, 355, GEN1, Monte Carlo, S10

  
  Good for weekend cruiser with 9:1+ compression, 2000+ stall and lower gears. Noticeable idle.
  

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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