Riviera V6-231 3.8L VIN L SFI (1991)
Intake Manifold: Specifications
Note: See Technical Service Bulletins for Intake Manifold
Aluminum Upper Intake Manifold
Upper Intake Manifold Bolts .................................................................................................................................................................... 29 Nm (21 lbs. ft.)
Intake Manifold Assembly ....................................................................................................................................................................... 10 Nm (89 lbs. in.)
Composite Upper Intake Manifold
Upper Intake Manifold Bolts .................................................................................................................................................................... 15 Nm (11 lbs. ft.)
Intake Manifold Assembly ........................................................................................................................................................................ 15 Nm (11 lbs. ft).