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Application Details

  • Gen. 3 and 4 Small Block (LS-based engines)
  • Gen. 5 Small Block (LT-based engines)
  • Gen. 7 Big Block (8.1L Vortec)

Late Model Chevy Cylinder Numbering and Firing Order

Cylinder Numbering

  • Front to back
  • 1, 3, 5, 7 on the driver side
  • 2, 4, 6, 8 on the passenger side

Firing Order

  • 1-8-7-2-6-5-4-3
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