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Application Details

  • Buick Nail Head V8
    • 401 c.i.d.
    • 425 c.i.d.

Buick Nail Head Cylinder Numbering, Distributor Rotation, and Firing Order

Cylinder Numbering

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

Firing Order

  • 1-2-7-8-4-5-6-3

Distributor Rotation

  • Clockwise
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