Fastener Tightening Specifications - Intake Manifold

DIMENSIONS
Surface Flatness (Maximum) 0.254 mm (0.010 inch)

TIGHTENING SPECIFICATIONS

Tightening Sequence:

Lower Intake Manifold Bolts:
First Pass 3 Nm (27 lb in)
Second Pass 12 Nm (106 lb in)
Final Pass 15 Nm (11 lb ft)

Upper Intake Manifold Bolts and Studs:
First Pass 5 Nm (44 lb in)
Final Pass 10 Nm (88 lb in)

AllData Editor NOTE: Other than the two torque passes listed above, the OE Manufacturer did NOT address or supply a bolt tightening sequence for the upper Intake Manifold for this model year, or other model years where this 2 piece manifold setup is used.
A "Play It Safe" final tightening sequence would be to tighten from the center most bolts to the outer most bolts.