Intake manifold bolt
Tightening procedure
- Torque 44 lb-in · 5 N·m
- Torque 89 lb-in · 10 N·m
Complete the passes in the order shown. Angle passes are turn-of-the-nut steps measured with an angle gauge after the preceding torque pass.
Tools
- 5mm hex key
Notes
Two passes, in sequence. Inch-pound spec. Count is approximate (varies by manifold); confirm and refine from the model bolt pattern. Catalog PN: GM 12552344 per figure GM00-059 callout 512 — "BOLT,INT MANIF(W/FLAT WASHER)(M6X1.0X114.0) — Required: 10, Y 6.2W(LS3) (2008-2011). M6x1.0 thread, 114mm long, with captive flat washer." Socket: 5mm hex key - stock LS intake manifold bolts use an INTERNAL hex, not an external socket (confirmed across LS1Tech threads); provisional. length_mm lifted into the structured field on 2026-06-04 from the GM parts descriptor already quoted above (M6X1.0X114.0); 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)
Values are cited as facts. We do not reproduce the manufacturer's prose, table layout, or diagrams.