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6.2L LS3 V8 · Rocker Arm

Rocker arm bolt

Tightening procedure

  1. Torque 22 lb-ft · 30 N·m

Tools

  • socket

Notes

Catalog PN: GM 12560961 per figure GM00-039 callout 214 — "BOLT,VLV RKR ARM PIV SUPT(M8X1.25X52.5) — Required: 16, Y 6.2W(LS3) (2008-2011). M8x1.25 thread, 52.5mm long. Bolts through rocker arm trunnion + pivot support 12600936 into cylinder head." length_mm lifted into the structured field on 2026-06-04 from the GM parts descriptor already quoted above (M8X1.25X52.5); the third number is the bolt length in mm. Cross-checked against the chevrolet-parts-canada parts catalog (captured 2026-05-28), whose blocked detail pages and callout-only diagrams do not separately state this length, so the value rests on the GM Professional Parts Catalog descriptor.

Sources

  • GM Fastener Tightening Specifications (6.2L LS3), Document ID 2296270
  • 2011 Chevrolet Corvette Parts Catalog (GM Professional, Dec-11 supersedes May-11)Captured 2026-05-28

Values are cited as facts. We do not reproduce the manufacturer's prose, table layout, or diagrams.